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-rw-r--r--meta/packages/gcc/gcc-3.4.4/GCC3.4.0VisibilityPatch.diff1100
1 files changed, 1100 insertions, 0 deletions
diff --git a/meta/packages/gcc/gcc-3.4.4/GCC3.4.0VisibilityPatch.diff b/meta/packages/gcc/gcc-3.4.4/GCC3.4.0VisibilityPatch.diff
new file mode 100644
index 0000000000..d51da7157d
--- /dev/null
+++ b/meta/packages/gcc/gcc-3.4.4/GCC3.4.0VisibilityPatch.diff
@@ -0,0 +1,1100 @@
1
2diff -aur gcc-3.4.0orig/gcc/c-common.c gcc-3.4.0/gcc/c-common.c
3--- gcc-3.4.0orig/gcc/c-common.c 2004-03-19 01:32:59.000000000 +0000
4+++ gcc-3.4.0/gcc/c-common.c 2004-05-10 21:05:33.000000000 +0100
5@@ -833,7 +833,7 @@
6 handle_deprecated_attribute },
7 { "vector_size", 1, 1, false, true, false,
8 handle_vector_size_attribute },
9- { "visibility", 1, 1, true, false, false,
10+ { "visibility", 1, 1, false, false, false,
11 handle_visibility_attribute },
12 { "tls_model", 1, 1, true, false, false,
13 handle_tls_model_attribute },
14@@ -4886,7 +4886,16 @@
15
16 *no_add_attrs = true;
17
18- if (decl_function_context (decl) != 0 || ! TREE_PUBLIC (decl))
19+ if (TYPE_P (*node))
20+ {
21+ if (TREE_CODE (*node) != RECORD_TYPE && TREE_CODE (*node) != UNION_TYPE)
22+ {
23+ warning ("`%s' attribute ignored on non-class types",
24+ IDENTIFIER_POINTER (name));
25+ return NULL_TREE;
26+ }
27+ }
28+ else if (decl_function_context (decl) != 0 || ! TREE_PUBLIC (decl))
29 {
30 warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name));
31 return NULL_TREE;
32@@ -4897,6 +4906,14 @@
33 error ("visibility arg not a string");
34 return NULL_TREE;
35 }
36+
37+ /* If this is a type, set the visibility on the type decl. */
38+ if (TYPE_P (decl))
39+ {
40+ decl = TYPE_NAME (decl);
41+ if (! decl)
42+ return NULL_TREE;
43+ }
44
45 if (strcmp (TREE_STRING_POINTER (id), "default") == 0)
46 DECL_VISIBILITY (decl) = VISIBILITY_DEFAULT;
47@@ -4908,6 +4925,14 @@
48 DECL_VISIBILITY (decl) = VISIBILITY_PROTECTED;
49 else
50 error ("visibility arg must be one of \"default\", \"hidden\", \"protected\" or \"internal\"");
51+ DECL_VISIBILITYSPECIFIED (decl) = 1;
52+
53+ /* For decls only, go ahead and attach the attribute to the node as well.
54+ This is needed so we can determine whether we have VISIBILITY_DEFAULT
55+ because the visibility was not specified, or because it was explicitly
56+ overridden from the class visibility. */
57+ if (DECL_P (*node))
58+ *no_add_attrs = false;
59
60 return NULL_TREE;
61 }
62
63diff -aur gcc-3.4.0orig/gcc/c-decl.c gcc-3.4.0/gcc/c-decl.c
64--- gcc-3.4.0orig/gcc/c-decl.c 2004-03-22 17:58:18.000000000 +0000
65+++ gcc-3.4.0/gcc/c-decl.c 2004-05-10 15:16:27.000000000 +0100
66@@ -1164,9 +1164,8 @@
67 }
68
69 /* warnings */
70- /* All decls must agree on a non-default visibility. */
71- if (DECL_VISIBILITY (newdecl) != VISIBILITY_DEFAULT
72- && DECL_VISIBILITY (olddecl) != VISIBILITY_DEFAULT
73+ /* All decls must agree on a visibility. */
74+ if (DECL_VISIBILITYSPECIFIED (newdecl) && DECL_VISIBILITYSPECIFIED (olddecl)
75 && DECL_VISIBILITY (newdecl) != DECL_VISIBILITY (olddecl))
76 {
77 warning ("%Jredeclaration of '%D' with different visibility "
78@@ -1361,9 +1360,12 @@
79 Currently, it can only be defined in the prototype. */
80 COPY_DECL_ASSEMBLER_NAME (olddecl, newdecl);
81
82- /* If either declaration has a nondefault visibility, use it. */
83- if (DECL_VISIBILITY (olddecl) != VISIBILITY_DEFAULT)
84- DECL_VISIBILITY (newdecl) = DECL_VISIBILITY (olddecl);
85+ /* Use visibility of whichever declaration had it specified */
86+ if (DECL_VISIBILITYSPECIFIED (olddecl))
87+ {
88+ DECL_VISIBILITY (newdecl) = DECL_VISIBILITY (olddecl);
89+ DECL_VISIBILITYSPECIFIED (newdecl) = 1;
90+ }
91
92 if (TREE_CODE (newdecl) == FUNCTION_DECL)
93 {
94
95diff -aur gcc-3.4.0orig/gcc/common.opt gcc-3.4.0/gcc/common.opt
96--- gcc-3.4.0orig/gcc/common.opt 2004-02-18 00:09:04.000000000 +0000
97+++ gcc-3.4.0/gcc/common.opt 2004-05-09 08:10:50.000000000 +0100
98@@ -718,6 +718,11 @@
99 Common
100 Add extra commentary to assembler output
101
102+fvisibility=
103+Common Joined RejectNegative
104+-fvisibility=[default|internal|hidden|protected] Set the default symbol visibility
105+
106+
107 fvpt
108 Common
109 Use expression value profiles in optimizations
110
111diff -aur gcc-3.4.0orig/gcc/c.opt gcc-3.4.0/gcc/c.opt
112--- gcc-3.4.0orig/gcc/c.opt 2004-02-18 00:09:03.000000000 +0000
113+++ gcc-3.4.0/gcc/c.opt 2004-05-09 08:10:50.000000000 +0100
114@@ -656,6 +656,10 @@
115 C++ ObjC++
116 Use __cxa_atexit to register destructors
117
118+fvisibility-inlines-hidden
119+C++
120+Marks all inlined methods as having hidden visibility
121+
122 fvtable-gc
123 C++ ObjC++
124 Discard unused virtual functions
125diff -aur gcc-3.4.0orig/gcc/c-opts.c gcc-3.4.0/gcc/c-opts.c
126--- gcc-3.4.0orig/gcc/c-opts.c 2004-02-18 00:09:03.000000000 +0000
127+++ gcc-3.4.0/gcc/c-opts.c 2004-05-09 08:10:50.000000000 +0100
128@@ -912,6 +912,10 @@
129 case OPT_fuse_cxa_atexit:
130 flag_use_cxa_atexit = value;
131 break;
132+
133+ case OPT_fvisibility_inlines_hidden:
134+ visibility_options.inlineshidden = value;
135+ break;
136
137 case OPT_fweak:
138 flag_weak = value;
139
140diff -aur gcc-3.4.0orig/gcc/cp/class.c gcc-3.4.0/gcc/cp/class.c
141--- gcc-3.4.0orig/gcc/cp/class.c 2004-03-09 07:27:23.000000000 +0000
142+++ gcc-3.4.0/gcc/cp/class.c 2004-05-10 21:06:50.000000000 +0100
143@@ -524,6 +524,10 @@
144 DECL_ALIGN (decl) = MAX (TYPE_ALIGN (double_type_node),
145 DECL_ALIGN (decl));
146
147+ /* The vtable's visibility is the class visibility. There is no way
148+ to override the visibility for just the vtable. */
149+ DECL_VISIBILITY (decl) = CLASSTYPE_VISIBILITY (class_type);
150+ DECL_VISIBILITYSPECIFIED (decl) = CLASSTYPE_VISIBILITYSPECIFIED (class_type);
151 import_export_vtable (decl, class_type, 0);
152
153 return decl;
154@@ -2971,7 +2975,25 @@
155 continue;
156
157 if (TREE_CODE (x) == CONST_DECL || TREE_CODE (x) == VAR_DECL)
158- continue;
159+ {
160+ /* Apply the class's visibility attribute to static members
161+ which do not have a visibility attribute. */
162+ if (! lookup_attribute ("visibility", DECL_ATTRIBUTES (x)))
163+ {
164+ if (visibility_options.inlineshidden && DECL_INLINE (x))
165+ {
166+ DECL_VISIBILITY (x) = VISIBILITY_HIDDEN;
167+ DECL_VISIBILITYSPECIFIED (x) = 1;
168+ }
169+ else
170+ {
171+ DECL_VISIBILITY (x) = CLASSTYPE_VISIBILITY (current_class_type);
172+ DECL_VISIBILITYSPECIFIED (x) = CLASSTYPE_VISIBILITYSPECIFIED (current_class_type);
173+ }
174+ }
175+
176+ continue;
177+ }
178
179 /* Now it can only be a FIELD_DECL. */
180
181@@ -3708,6 +3730,22 @@
182 check_for_override (x, t);
183 if (DECL_PURE_VIRTUAL_P (x) && ! DECL_VINDEX (x))
184 cp_error_at ("initializer specified for non-virtual method `%D'", x);
185+
186+ /* Apply the class's visibility attribute to methods which do
187+ not have a visibility attribute. */
188+ if (! lookup_attribute ("visibility", DECL_ATTRIBUTES (x)))
189+ {
190+ if (visibility_options.inlineshidden && DECL_INLINE (x))
191+ {
192+ DECL_VISIBILITY (x) = VISIBILITY_HIDDEN;
193+ DECL_VISIBILITYSPECIFIED (x) = 1;
194+ }
195+ else
196+ {
197+ DECL_VISIBILITY (x) = CLASSTYPE_VISIBILITY (current_class_type);
198+ DECL_VISIBILITYSPECIFIED (x) = CLASSTYPE_VISIBILITYSPECIFIED (current_class_type);
199+ }
200+ }
201
202 /* The name of the field is the original field name
203 Save this in auxiliary field for later overloading. */
204@@ -7830,3 +7868,4 @@
205 *vid->last_init = build_tree_list (NULL_TREE, init);
206 vid->last_init = &TREE_CHAIN (*vid->last_init);
207 }
208+
209
210diff -aur gcc-3.4.0orig/gcc/cp/cp-tree.h gcc-3.4.0/gcc/cp/cp-tree.h
211--- gcc-3.4.0orig/gcc/cp/cp-tree.h 2004-03-20 00:13:08.000000000 +0000
212+++ gcc-3.4.0/gcc/cp/cp-tree.h 2004-05-10 20:56:56.000000000 +0100
213@@ -1008,7 +1008,12 @@
214 #define PUBLICLY_UNIQUELY_DERIVED_P(PARENT, TYPE) \
215 (lookup_base ((TYPE), (PARENT), ba_not_special | ba_quiet, NULL) \
216 != NULL_TREE)
217-
218+
219+/* Gives the visibility specification for a class type. */
220+#define CLASSTYPE_VISIBILITY(TYPE) DECL_VISIBILITY (TYPE_NAME (TYPE))
221+#define CLASSTYPE_VISIBILITYSPECIFIED(TYPE) DECL_VISIBILITYSPECIFIED (TYPE_NAME (TYPE))
222+
223+
224 /* This is a few header flags for 'struct lang_type'. Actually,
225 all but the first are used only for lang_type_class; they
226 are put in this structure to save space. */
227
228diff -aur gcc-3.4.0orig/gcc/cp/decl.c gcc-3.4.0/gcc/cp/decl.c
229--- gcc-3.4.0orig/gcc/cp/decl.c 2004-04-01 21:47:21.000000000 +0100
230+++ gcc-3.4.0/gcc/cp/decl.c 2004-05-28 21:16:11.000000000 +0100
231@@ -1869,17 +1869,34 @@
232 DECL_COMMON (newdecl) = DECL_COMMON (olddecl);
233 COPY_DECL_ASSEMBLER_NAME (olddecl, newdecl);
234
235- /* If either declaration has a nondefault visibility, use it. */
236- if (DECL_VISIBILITY (olddecl) != VISIBILITY_DEFAULT)
237+ /* Warn about conflicting visibility specifications. */
238+ if (DECL_VISIBILITYSPECIFIED (olddecl) && DECL_VISIBILITYSPECIFIED (newdecl)
239+ && DECL_VISIBILITY (newdecl) != DECL_VISIBILITY (olddecl))
240+ {
241+ warning ("%J'%D': visibility attribute ignored because it",
242+ newdecl, newdecl);
243+ warning ("%Jconflicts with previous declaration here", olddecl);
244+ }
245+ /* Choose the declaration which specified visibility. */
246+ if (DECL_VISIBILITYSPECIFIED (olddecl))
247 {
248- if (DECL_VISIBILITY (newdecl) != VISIBILITY_DEFAULT
249- && DECL_VISIBILITY (newdecl) != DECL_VISIBILITY (olddecl))
250- {
251- warning ("%J'%D': visibility attribute ignored because it",
252- newdecl, newdecl);
253- warning ("%Jconflicts with previous declaration here", olddecl);
254- }
255 DECL_VISIBILITY (newdecl) = DECL_VISIBILITY (olddecl);
256+ DECL_VISIBILITYSPECIFIED (newdecl) = 1;
257+ }
258+ /* If it's a definition of a global operator new or operator
259+ delete, it must be default visibility. */
260+ if (NEW_DELETE_OPNAME_P (DECL_NAME (newdecl)) && DECL_INITIAL (newdecl) != NULL_TREE)
261+ {
262+ if (!DECL_FUNCTION_MEMBER_P (newdecl) && VISIBILITY_DEFAULT != DECL_VISIBILITY (newdecl))
263+ {
264+ warning ("%J`%D': ignoring non-default symbol",
265+ newdecl, newdecl);
266+ warning ("%Jvisibility on global operator new or delete", newdecl);
267+ DECL_VISIBILITY (olddecl) = VISIBILITY_DEFAULT;
268+ DECL_VISIBILITYSPECIFIED (olddecl) = 1;
269+ DECL_VISIBILITY (newdecl) = VISIBILITY_DEFAULT;
270+ DECL_VISIBILITYSPECIFIED (newdecl) = 1;
271+ }
272 }
273
274 if (TREE_CODE (newdecl) == FUNCTION_DECL)
275
276diff -aur gcc-3.4.0orig/gcc/cp/method.c gcc-3.4.0/gcc/cp/method.c
277--- gcc-3.4.0orig/gcc/cp/method.c 2004-04-08 23:15:58.000000000 +0100
278+++ gcc-3.4.0/gcc/cp/method.c 2004-05-09 08:10:52.000000000 +0100
279@@ -394,6 +394,7 @@
280 rewrite. */
281 TREE_PUBLIC (thunk_fndecl) = TREE_PUBLIC (function);
282 DECL_VISIBILITY (thunk_fndecl) = DECL_VISIBILITY (function);
283+ DECL_VISIBILITYSPECIFIED (thunk_fndecl) = DECL_VISIBILITYSPECIFIED (function);
284
285 if (flag_syntax_only)
286 {
287
288diff -aur gcc-3.4.0orig/gcc/cp/optimize.c gcc-3.4.0/gcc/cp/optimize.c
289--- gcc-3.4.0orig/gcc/cp/optimize.c 2004-02-08 01:52:50.000000000 +0000
290+++ gcc-3.4.0/gcc/cp/optimize.c 2004-05-09 08:10:52.000000000 +0100
291@@ -155,6 +155,7 @@
292 DECL_NOT_REALLY_EXTERN (clone) = DECL_NOT_REALLY_EXTERN (fn);
293 TREE_PUBLIC (clone) = TREE_PUBLIC (fn);
294 DECL_VISIBILITY (clone) = DECL_VISIBILITY (fn);
295+ DECL_VISIBILITYSPECIFIED (clone) = DECL_VISIBILITYSPECIFIED (fn);
296
297 /* Adjust the parameter names and locations. */
298 parm = DECL_ARGUMENTS (fn);
299
300diff -aur gcc-3.4.0orig/gcc/cp/rtti.c gcc-3.4.0/gcc/cp/rtti.c
301--- gcc-3.4.0orig/gcc/cp/rtti.c 2004-03-08 23:00:26.000000000 +0000
302+++ gcc-3.4.0/gcc/cp/rtti.c 2004-05-10 21:09:21.000000000 +0100
303@@ -361,7 +361,11 @@
304 pushdecl_top_level_and_finish (d, NULL_TREE);
305
306 if (CLASS_TYPE_P (type))
307- CLASSTYPE_TYPEINFO_VAR (TYPE_MAIN_VARIANT (type)) = d;
308+ {
309+ CLASSTYPE_TYPEINFO_VAR (TYPE_MAIN_VARIANT (type)) = d;
310+ DECL_VISIBILITY (d) = CLASSTYPE_VISIBILITY (type);
311+ DECL_VISIBILITYSPECIFIED (d) = CLASSTYPE_VISIBILITYSPECIFIED (type);
312+ }
313
314 /* Remember the type it is for. */
315 TREE_TYPE (name) = type;
316@@ -759,6 +763,11 @@
317 TREE_STATIC (name_decl) = 1;
318 DECL_EXTERNAL (name_decl) = 0;
319 TREE_PUBLIC (name_decl) = 1;
320+ if (CLASS_TYPE_P (target))
321+ {
322+ DECL_VISIBILITY (name_decl) = CLASSTYPE_VISIBILITY (target);
323+ DECL_VISIBILITYSPECIFIED (name_decl) = CLASSTYPE_VISIBILITYSPECIFIED (target);
324+ }
325 import_export_tinfo (name_decl, target, typeinfo_in_lib_p (target));
326 /* External name of the string containing the type's name has a
327 special name. */
328
329diff -aur gcc-3.4.0orig/gcc/c-pragma.c gcc-3.4.0/gcc/c-pragma.c
330--- gcc-3.4.0orig/gcc/c-pragma.c 2004-01-23 23:35:53.000000000 +0000
331+++ gcc-3.4.0/gcc/c-pragma.c 2004-05-09 08:10:52.000000000 +0100
332@@ -480,6 +480,86 @@
333 return asmname;
334 }
335
336+
337+#ifdef HANDLE_PRAGMA_VISIBILITY
338+static void handle_pragma_visibility (cpp_reader *);
339+
340+/* Sets the default visibility for symbols to something other than that
341+ specified on the command line. */
342+static void
343+handle_pragma_visibility (cpp_reader *dummy ATTRIBUTE_UNUSED)
344+{ /* Form is #pragma GCC visibility push(hidden)|pop */
345+ static int visstack [16], visidx;
346+ tree x;
347+ enum cpp_ttype token;
348+ enum { bad, push, pop } action = bad;
349+
350+ token = c_lex (&x);
351+ if (token == CPP_NAME)
352+ {
353+ const char *op = IDENTIFIER_POINTER (x);
354+ if (!strcmp (op, "push"))
355+ action = push;
356+ else if (!strcmp (op, "pop"))
357+ action = pop;
358+ }
359+ if (bad == action)
360+ GCC_BAD ("#pragma GCC visibility must be followed by push or pop");
361+ else
362+ {
363+ if (pop == action)
364+ {
365+ if (!visidx)
366+ {
367+ GCC_BAD ("No matching push for '#pragma GCC visibility pop'");
368+ }
369+ else
370+ {
371+ default_visibility = visstack[--visidx];
372+ visibility_options.inpragma = (visidx>0);
373+ }
374+ }
375+ else
376+ {
377+ if (c_lex (&x) != CPP_OPEN_PAREN)
378+ GCC_BAD ("missing '(' after '#pragma GCC visibility push' - ignored");
379+ token = c_lex (&x);
380+ if (token != CPP_NAME)
381+ {
382+ GCC_BAD ("malformed #pragma GCC visibility push");
383+ }
384+ else if (visidx >= 16)
385+ {
386+ GCC_BAD ("No more than sixteen #pragma GCC visibility pushes allowed at once");
387+ }
388+ else
389+ {
390+ const char *str = IDENTIFIER_POINTER (x);
391+ visstack[visidx++] = default_visibility;
392+ if (!strcmp (str, "default"))
393+ default_visibility = VISIBILITY_DEFAULT;
394+ else if (!strcmp (str, "internal"))
395+ default_visibility = VISIBILITY_INTERNAL;
396+ else if (!strcmp (str, "hidden"))
397+ default_visibility = VISIBILITY_HIDDEN;
398+ else if (!strcmp (str, "protected"))
399+ default_visibility = VISIBILITY_PROTECTED;
400+ else
401+ {
402+ GCC_BAD ("#pragma GCC visibility push() must specify default, internal, hidden or protected");
403+ }
404+ visibility_options.inpragma = 1;
405+ }
406+ if (c_lex (&x) != CPP_CLOSE_PAREN)
407+ GCC_BAD ("missing '(' after '#pragma GCC visibility push' - ignored");
408+ }
409+ }
410+ if (c_lex (&x) != CPP_EOF)
411+ warning ("junk at end of '#pragma GCC visibility'");
412+}
413+
414+#endif
415+
416 /* Front-end wrapper for pragma registration to avoid dragging
417 cpplib.h in almost everywhere. */
418 void
419@@ -505,6 +585,9 @@
420 #ifdef HANDLE_PRAGMA_EXTERN_PREFIX
421 c_register_pragma (0, "extern_prefix", handle_pragma_extern_prefix);
422 #endif
423+#ifdef HANDLE_PRAGMA_VISIBILITY
424+ c_register_pragma ("GCC", "visibility", handle_pragma_visibility);
425+#endif
426
427 #ifdef REGISTER_TARGET_PRAGMAS
428 REGISTER_TARGET_PRAGMAS ();
429diff -aur gcc-3.4.0orig/gcc/c-pragma.h gcc-3.4.0/gcc/c-pragma.h
430--- gcc-3.4.0orig/gcc/c-pragma.h 2004-01-31 06:18:05.000000000 +0000
431+++ gcc-3.4.0/gcc/c-pragma.h 2004-05-09 08:10:53.000000000 +0100
432@@ -44,6 +44,11 @@
433 #define HANDLE_PRAGMA_PACK 1
434 #endif /* HANDLE_PRAGMA_PACK_PUSH_POP */
435
436+/* It's safe to always leave visibility pragma enabled as if
437+ visibility is not supported on the host OS platform the
438+ statements are ignored. */
439+#define HANDLE_PRAGMA_VISIBILITY 1
440+
441 extern void init_pragma (void);
442
443 /* Front-end wrapper for pragma registration to avoid dragging
444
445
446diff -aur gcc-3.4.0orig/gcc/doc/invoke.texi gcc-3.4.0/gcc/doc/invoke.texi
447--- gcc-3.4.0orig/gcc/doc/invoke.texi 2004-04-19 00:05:36.000000000 +0100
448+++ gcc-3.4.0/gcc/doc/invoke.texi 2004-05-28 21:29:36.000000000 +0100
449@@ -183,7 +183,8 @@
450 -fno-optional-diags -fpermissive @gol
451 -frepo -fno-rtti -fstats -ftemplate-depth-@var{n} @gol
452 -fuse-cxa-atexit -fno-weak -nostdinc++ @gol
453--fno-default-inline -Wabi -Wctor-dtor-privacy @gol
454+-fno-default-inline -fvisibility-inlines-hidden @gol
455+-Wabi -Wctor-dtor-privacy @gol
456 -Wnon-virtual-dtor -Wreorder @gol
457 -Weffc++ -Wno-deprecated @gol
458 -Wno-non-template-friend -Wold-style-cast @gol
459@@ -674,7 +675,8 @@
460 -fargument-alias -fargument-noalias @gol
461 -fargument-noalias-global -fleading-underscore @gol
462 -ftls-model=@var{model} @gol
463--ftrapv -fwrapv -fbounds-check}
464+-ftrapv -fwrapv -fbounds-check @gol
465+-fvisibility}
466 @end table
467
468 @menu
469@@ -1433,6 +1435,20 @@
470 destructors, but will only work if your C library supports
471 @code{__cxa_atexit}.
472
473+@item -fvisibility-inlines-hidden
474+@opindex fvisibility-inlines-hidden
475+Causes all inlined methods to be marked with
476+@code{__attribute__ ((visibility ("hidden")))} so that they do not
477+appear in the export table of a DSO and do not require a PLT indirection
478+when used within the DSO. Enabling this option can have a dramatic effect
479+on load and link times of a DSO as it massively reduces the size of the
480+dynamic export table when the library makes heavy use of templates. While
481+it can cause bloating through duplication of code within each DSO where
482+it is used, often the wastage is less than the considerable space occupied
483+by a long symbol name in the export table which is typical when using
484+templates and namespaces. For even more savings, combine with the
485+@code{-fvisibility=hidden} switch.
486+
487 @item -fno-weak
488 @opindex fno-weak
489 Do not use weak symbol support, even if it is provided by the linker.
490@@ -11198,6 +11214,54 @@
491
492 The default without @option{-fpic} is @code{initial-exec}; with
493 @option{-fpic} the default is @code{global-dynamic}.
494+
495+@item -fvisibility=@var{default|internal|hidden|protected}
496+@opindex fvisibility
497+Set the default ELF image symbol visibility to the specified option - all
498+symbols will be marked with this unless overrided within the code.
499+Using this feature can very substantially improve linking and
500+load times of shared object libraries, produce more optimised
501+code, provide near-perfect API export and prevent symbol clashes.
502+It is @strong{strongly} recommended that you use this in any shared objects
503+you distribute.
504+
505+Despite the nomenclature, @code{default} always means public ie;
506+available to be linked against from outside the shared object.
507+@code{protected} and @code{internal} are pretty useless in real-world
508+usage so the only other commonly used option will be @code{hidden}.
509+The default if -fvisibility isn't specified is @code{default} ie; make every
510+symbol public - this causes the same behaviour as previous versions of
511+GCC.
512+
513+A good explanation of the benefits offered by ensuring ELF
514+symbols have the correct visibility is given by ``How To Write
515+Shared Libraries'' by Ulrich Drepper (which can be found at
516+@w{@uref{http://people.redhat.com/~drepper/}}) - however a superior
517+solution made possible by this option to marking things hidden when
518+the default is public is to make the default hidden and mark things
519+public. This is the norm with DLL's on Windows and with @option{-fvisibility=hidden}
520+and @code{__attribute__ ((visibility("default")))} instead of
521+@code{__declspec(dllexport)} you get almost identical semantics with
522+identical syntax. This is a great boon to those working with
523+cross-platform projects.
524+
525+For those adding visibility support to existing code, you may find
526+@samp{#pragma GCC visibility} of use. This works by you enclosing
527+the declarations you wish to set visibility for with (for example)
528+@samp{#pragma GCC visibility push(hidden)} and
529+@samp{#pragma GCC visibility pop}. These can be nested up to sixteen
530+times. Bear in mind that symbol visibility should be viewed @strong{as
531+part of the API interface contract} and thus all new code should
532+always specify visibility when it is not the default ie; declarations
533+only for use within the local DSO should @strong{always} be marked explicitly
534+as hidden as so to avoid PLT indirection overheads - making this
535+abundantly clear also aids readability and self-documentation of the code.
536+Note that due to ISO C++ specification requirements, operator new and
537+operator delete must always be of default visibility.
538+
539+An overview of these techniques, their benefits and how to use them
540+is at @w{@uref{http://www.nedprod.com/programs/gccvisibility.html}}.
541+
542 @end table
543
544 @c man end
545
546diff -aur gcc-3.4.0orig/gcc/flags.h gcc-3.4.0/gcc/flags.h
547--- gcc-3.4.0orig/gcc/flags.h 2004-02-18 00:09:04.000000000 +0000
548+++ gcc-3.4.0/gcc/flags.h 2004-05-09 08:10:53.000000000 +0100
549@@ -60,6 +60,30 @@
550 /* Nonzero means emit debugging information only for symbols which are used. */
551 extern int flag_debug_only_used_symbols;
552
553+/* Enumerate visibility settings. */
554+#ifndef SYMBOL_VISIBILITY_DEFINED
555+#define SYMBOL_VISIBILITY_DEFINED
556+enum symbol_visibility
557+{
558+ VISIBILITY_DEFAULT,
559+ VISIBILITY_INTERNAL,
560+ VISIBILITY_HIDDEN,
561+ VISIBILITY_PROTECTED
562+};
563+#endif
564+
565+/* The default visibility for all symbols (unless overridden). */
566+extern enum symbol_visibility default_visibility;
567+
568+struct visibility_flags
569+{
570+ unsigned inpragma : 1; /* True when in #pragma GCC visibility. */
571+ unsigned inlineshidden : 1; /* True when -finlineshidden in effect. */
572+};
573+
574+/* Global visibility options. */
575+extern struct visibility_flags visibility_options;
576+
577 /* Nonzero means do optimizations. -opt. */
578
579 extern int optimize;
580
581diff -aur gcc-3.4.0orig/gcc/opts.c gcc-3.4.0/gcc/opts.c
582--- gcc-3.4.0orig/gcc/opts.c 2004-02-18 00:09:04.000000000 +0000
583+++ gcc-3.4.0/gcc/opts.c 2004-05-09 08:10:53.000000000 +0100
584@@ -142,6 +142,12 @@
585 write_symbols is set to DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */
586 bool use_gnu_debug_info_extensions;
587
588+/* The default visibility for all symbols (unless overridden) */
589+enum symbol_visibility default_visibility = VISIBILITY_DEFAULT;
590+
591+/* Global visibility options. */
592+struct visibility_flags visibility_options;
593+
594 /* Columns of --help display. */
595 static unsigned int columns = 80;
596
597@@ -1440,6 +1446,21 @@
598 flag_verbose_asm = value;
599 break;
600
601+ case OPT_fvisibility_:
602+ {
603+ if(!strcmp(arg, "default"))
604+ default_visibility=VISIBILITY_DEFAULT;
605+ else if(!strcmp(arg, "internal"))
606+ default_visibility=VISIBILITY_INTERNAL;
607+ else if(!strcmp(arg, "hidden"))
608+ default_visibility=VISIBILITY_HIDDEN;
609+ else if(!strcmp(arg, "protected"))
610+ default_visibility=VISIBILITY_PROTECTED;
611+ else
612+ error("unrecognised visibility value \"%s\"", arg);
613+ }
614+ break;
615+
616 case OPT_fweb:
617 flag_web = value;
618 break;
619
620diff -aur gcc-3.4.0orig/gcc/tree.c gcc-3.4.0/gcc/tree.c
621--- gcc-3.4.0orig/gcc/tree.c 2004-02-05 22:01:35.000000000 +0000
622+++ gcc-3.4.0/gcc/tree.c 2004-05-10 15:22:52.000000000 +0100
623@@ -2563,6 +2563,11 @@
624 layout_decl (t, 0);
625 else if (code == FUNCTION_DECL)
626 DECL_MODE (t) = FUNCTION_MODE;
627+
628+ /* Set default visibility to whatever the user supplied with
629+ visibility_specified depending on #pragma GCC visibility. */
630+ DECL_VISIBILITY (t) = default_visibility;
631+ DECL_VISIBILITYSPECIFIED (t) = visibility_options.inpragma;
632
633 return t;
634 }
635
636diff -aur gcc-3.4.0orig/gcc/tree.h gcc-3.4.0/gcc/tree.h
637--- gcc-3.4.0orig/gcc/tree.h 2004-02-08 01:52:43.000000000 +0000
638+++ gcc-3.4.0/gcc/tree.h 2004-05-09 08:10:54.000000000 +0100
639@@ -1499,6 +1499,10 @@
640 /* Value of the decls's visibility attribute */
641 #define DECL_VISIBILITY(NODE) (DECL_CHECK (NODE)->decl.visibility)
642
643+/* Nonzero means that the decl had its visibility specified rather than
644+ being inferred. */
645+#define DECL_VISIBILITYSPECIFIED(NODE) (DECL_CHECK (NODE)->decl.visibility_specified)
646+
647 /* In a FUNCTION_DECL, nonzero if the function cannot be inlined. */
648 #define DECL_UNINLINABLE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.uninlinable)
649
650@@ -1633,7 +1637,8 @@
651 || TREE_CODE (DECL_CONTEXT (EXP)) == TRANSLATION_UNIT_DECL)
652
653 /* Enumerate visibility settings. */
654-
655+#ifndef SYMBOL_VISIBILITY_DEFINED
656+#define SYMBOL_VISIBILITY_DEFINED
657 enum symbol_visibility
658 {
659 VISIBILITY_DEFAULT,
660@@ -1641,6 +1646,7 @@
661 VISIBILITY_HIDDEN,
662 VISIBILITY_PROTECTED
663 };
664+#endif
665
666 struct function;
667
668@@ -1684,8 +1690,7 @@
669 unsigned thread_local_flag : 1;
670 unsigned declared_inline_flag : 1;
671 ENUM_BITFIELD(symbol_visibility) visibility : 2;
672- unsigned unused : 1;
673- /* one unused bit. */
674+ unsigned visibility_specified : 1;
675
676 unsigned lang_flag_0 : 1;
677 unsigned lang_flag_1 : 1;
678
679diff -aur gcc-3.4.0orig/gcc/varasm.c gcc-3.4.0/gcc/varasm.c
680--- gcc-3.4.0orig/gcc/varasm.c 2004-04-14 22:14:08.000000000 +0100
681+++ gcc-3.4.0/gcc/varasm.c 2004-05-09 08:10:54.000000000 +0100
682@@ -5150,8 +5150,8 @@
683 /* Static variables are always local. */
684 else if (! TREE_PUBLIC (exp))
685 local_p = true;
686- /* A variable is local if the user tells us so. */
687- else if (DECL_VISIBILITY (exp) != VISIBILITY_DEFAULT)
688+ /* A variable is local if the user explicitly tells us so. */
689+ else if (DECL_VISIBILITYSPECIFIED (exp) && DECL_VISIBILITY (exp) != VISIBILITY_DEFAULT)
690 local_p = true;
691 /* Otherwise, variables defined outside this object may not be local. */
692 else if (DECL_EXTERNAL (exp))
693@@ -5159,6 +5159,9 @@
694 /* Linkonce and weak data are never local. */
695 else if (DECL_ONE_ONLY (exp) || DECL_WEAK (exp))
696 local_p = false;
697+ /* If none of the above and visibility is not default, make local. */
698+ else if (DECL_VISIBILITY (exp) != VISIBILITY_DEFAULT)
699+ local_p = true;
700 /* If PIC, then assume that any global name can be overridden by
701 symbols resolved from other modules. */
702 else if (shlib)
703
704diff -Naur gcc-3.4.0orig/gcc/testsuite/gcc.dg/visibility-9.c gcc-3.4.0/gcc/testsuite/gcc.dg/visibility-9.c
705--- gcc-3.4.0orig/gcc/testsuite/gcc.dg/visibility-9.c 1970-01-01 01:00:00.000000000 +0100
706+++ gcc-3.4.0/gcc/testsuite/gcc.dg/visibility-9.c 2004-05-09 12:40:39.000000000 +0100
707@@ -0,0 +1,9 @@
708+/* Test that -fvisibility works. */
709+/* { dg-do compile } */
710+/* { dg-require-visibility "" } */
711+/* { dg-options "-fvisibility=hidden" } */
712+/* { dg-final { scan-assembler "\\.hidden.*foo" } } */
713+
714+void foo();
715+
716+void foo() { }
717diff -Naur gcc-3.4.0orig/gcc/testsuite/gcc.dg/visibility-a.c gcc-3.4.0/gcc/testsuite/gcc.dg/visibility-a.c
718--- gcc-3.4.0orig/gcc/testsuite/gcc.dg/visibility-a.c 1970-01-01 01:00:00.000000000 +0100
719+++ gcc-3.4.0/gcc/testsuite/gcc.dg/visibility-a.c 2004-05-09 12:55:04.000000000 +0100
720@@ -0,0 +1,10 @@
721+/* Test that #pragma GCC visibility works. */
722+/* { dg-do compile } */
723+/* { dg-require-visibility "" } */
724+/* { dg-final { scan-assembler "\\.hidden.*foo" } } */
725+
726+#pragma GCC visibility push(hidden)
727+void foo();
728+#pragma GCC visibility pop
729+
730+void foo() { }
731diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/fvisibility.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/fvisibility.C
732--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/fvisibility.C 1970-01-01 01:00:00.000000000 +0100
733+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/fvisibility.C 2004-05-09 19:17:13.000000000 +0100
734@@ -0,0 +1,12 @@
735+/* Test that -fvisibility affects class members. */
736+/* { dg-do compile } */
737+/* { dg-require-visibility "" } */
738+/* { dg-options "-fvisibility=hidden" } */
739+/* { dg-final { scan-assembler "\\.hidden.*Foo.methodEv" } } */
740+
741+class Foo
742+{
743+ void method();
744+};
745+
746+void Foo::method() { }
747diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/fvisibility-inlines-hidden.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/fvisibility-inlines-hidden.C
748--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/fvisibility-inlines-hidden.C 1970-01-01 01:00:00.000000000 +0100
749+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/fvisibility-inlines-hidden.C 2004-05-09 19:17:59.000000000 +0100
750@@ -0,0 +1,18 @@
751+/* Test that -fvisibility-inlines-hidden affects class members. */
752+/* { dg-do compile } */
753+/* { dg-require-visibility "" } */
754+/* { dg-options "-fvisibility-inlines-hidden" } */
755+/* { dg-final { scan-assembler "\\.hidden.*Foo.methodEv" } } */
756+
757+class Foo
758+{
759+public:
760+ void method() { }
761+};
762+
763+int main(void)
764+{
765+ Foo f;
766+ f.method();
767+ return 0;
768+}
769diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/fvisibility-override1.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/fvisibility-override1.C
770--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/fvisibility-override1.C 1970-01-01 01:00:00.000000000 +0100
771+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/fvisibility-override1.C 2004-05-09 19:18:06.000000000 +0100
772@@ -0,0 +1,12 @@
773+/* Test that -fvisibility does not override class member specific settings. */
774+/* { dg-do compile } */
775+/* { dg-require-visibility "" } */
776+/* { dg-options "-fvisibility=hidden" } */
777+/* { dg-final { scan-assembler "\\.internal.*Foo.methodEv" } } */
778+
779+class __attribute__ ((visibility ("internal"))) Foo
780+{
781+ void method();
782+};
783+
784+void Foo::method() { }
785diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/fvisibility-override2.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/fvisibility-override2.C
786--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/fvisibility-override2.C 1970-01-01 01:00:00.000000000 +0100
787+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/fvisibility-override2.C 2004-05-09 19:18:12.000000000 +0100
788@@ -0,0 +1,12 @@
789+/* Test that -fvisibility does not override class member specific settings. */
790+/* { dg-do compile } */
791+/* { dg-require-visibility "" } */
792+/* { dg-options "-fvisibility=hidden" } */
793+/* { dg-final { scan-assembler "\\.internal.*Foo.methodEv" } } */
794+
795+class Foo
796+{
797+ __attribute__ ((visibility ("internal"))) void method();
798+};
799+
800+void Foo::method() { }
801diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/memfuncts.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/memfuncts.C
802--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/memfuncts.C 1970-01-01 01:00:00.000000000 +0100
803+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/memfuncts.C 2004-05-09 19:18:19.000000000 +0100
804@@ -0,0 +1,11 @@
805+/* Test that setting visibility for class member functions works. */
806+/* { dg-do compile } */
807+/* { dg-require-visibility "" } */
808+/* { dg-final { scan-assembler "\\.hidden.*Foo.methodEv" } } */
809+
810+class __attribute__ ((visibility ("hidden"))) Foo
811+{
812+ void method();
813+};
814+
815+void Foo::method() { }
816diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/noPLT.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/noPLT.C
817--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/noPLT.C 1970-01-01 01:00:00.000000000 +0100
818+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/noPLT.C 2004-05-09 19:21:49.000000000 +0100
819@@ -0,0 +1,20 @@
820+/* Test that -fvisibility=hidden prevents PLT. */
821+/* { dg-do compile } */
822+/* { dg-require-visibility "" } */
823+/* { dg-options "-fPIC -fvisibility=hidden" } */
824+/* { dg-final { scan-assembler-not "methodEv@PLT" } } */
825+
826+class Foo
827+{
828+public:
829+ void method();
830+};
831+
832+void Foo::method() { }
833+
834+int main(void)
835+{
836+ Foo f;
837+ f.method();
838+ return 0;
839+}
840diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/pragma.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/pragma.C
841--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/pragma.C 1970-01-01 01:00:00.000000000 +0100
842+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/pragma.C 2004-05-09 19:18:30.000000000 +0100
843@@ -0,0 +1,13 @@
844+/* Test that #pragma GCC visibility affects class members. */
845+/* { dg-do compile } */
846+/* { dg-require-visibility "" } */
847+/* { dg-final { scan-assembler "\\.hidden.*Foo.methodEv" } } */
848+
849+#pragma GCC visibility push(hidden)
850+class Foo
851+{
852+ void method();
853+};
854+#pragma GCC visibility pop
855+
856+void Foo::method() { }
857diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/pragma-override1.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/pragma-override1.C
858--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/pragma-override1.C 1970-01-01 01:00:00.000000000 +0100
859+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/pragma-override1.C 2004-05-09 19:18:36.000000000 +0100
860@@ -0,0 +1,13 @@
861+/* Test that #pragma GCC visibility does not override class member specific settings. */
862+/* { dg-do compile } */
863+/* { dg-require-visibility "" } */
864+/* { dg-final { scan-assembler "\\.internal.*Foo.methodEv" } } */
865+
866+#pragma GCC visibility push(hidden)
867+class __attribute__ ((visibility ("internal"))) Foo
868+{
869+ void method();
870+};
871+#pragma GCC visibility pop
872+
873+void Foo::method() { }
874diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/pragma-override2.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/pragma-override2.C
875--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/pragma-override2.C 1970-01-01 01:00:00.000000000 +0100
876+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/pragma-override2.C 2004-05-09 19:18:44.000000000 +0100
877@@ -0,0 +1,13 @@
878+/* Test that #pragma GCC visibility does not override class member specific settings. */
879+/* { dg-do compile } */
880+/* { dg-require-visibility "" } */
881+/* { dg-final { scan-assembler "\\.internal.*Foo.methodEv" } } */
882+
883+#pragma GCC visibility push(hidden)
884+class Foo
885+{
886+ __attribute__ ((visibility ("internal"))) void method();
887+};
888+#pragma GCC visibility pop
889+
890+void Foo::method() { }
891diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/staticmemfuncts.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/staticmemfuncts.C
892--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/staticmemfuncts.C 1970-01-01 01:00:00.000000000 +0100
893+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/staticmemfuncts.C 2004-05-09 19:18:50.000000000 +0100
894@@ -0,0 +1,11 @@
895+/* Test that setting visibility for static class member functions works. */
896+/* { dg-do compile } */
897+/* { dg-require-visibility "" } */
898+/* { dg-final { scan-assembler "\\.hidden.*Foo.methodEv" } } */
899+
900+class __attribute__ ((visibility ("hidden"))) Foo
901+{
902+ static void method();
903+};
904+
905+void Foo::method() { }
906diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/virtual.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/virtual.C
907--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/virtual.C 1970-01-01 01:00:00.000000000 +0100
908+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/virtual.C 2004-05-09 13:24:06.000000000 +0100
909@@ -0,0 +1,11 @@
910+/* Test that setting visibility for class affects virtual table. */
911+/* { dg-do compile } */
912+/* { dg-require-visibility "" } */
913+/* { dg-final { scan-assembler "\\.hidden.*ZTV3Foo" } } */
914+
915+class __attribute__ ((visibility ("hidden"))) Foo
916+{
917+ virtual void method();
918+};
919+
920+void Foo::method() { }
921diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/visibility-1.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/visibility-1.C
922--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/visibility-1.C 1970-01-01 01:00:00.000000000 +0100
923+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/visibility-1.C 2003-12-10 06:34:44.000000000 +0000
924@@ -0,0 +1,8 @@
925+/* Test visibility attribute on function definition. */
926+/* { dg-do compile { target *86-*-linux* } } */
927+/* { dg-final { scan-assembler "\\.hidden.*_Z3foov" } } */
928+
929+void
930+__attribute__((visibility ("hidden")))
931+foo()
932+{ }
933diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/visibility-2.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/visibility-2.C
934--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/visibility-2.C 1970-01-01 01:00:00.000000000 +0100
935+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/visibility-2.C 2003-12-10 06:34:44.000000000 +0000
936@@ -0,0 +1,7 @@
937+/* Test that visibility attribute on declaration extends to definition. */
938+/* { dg-do compile { target *86-*-linux* } } */
939+/* { dg-final { scan-assembler "\\.hidden.*_Z3foov" } } */
940+
941+void __attribute__((visibility ("hidden"))) foo();
942+
943+void foo() { }
944diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/visibility-3.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/visibility-3.C
945--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/visibility-3.C 1970-01-01 01:00:00.000000000 +0100
946+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/visibility-3.C 2003-12-10 06:34:45.000000000 +0000
947@@ -0,0 +1,7 @@
948+/* Test visibility attribute on forward declaration of global variable */
949+/* { dg-do compile { target *86-*-linux* } } */
950+/* { dg-final { scan-assembler "\\.hidden.*xyzzy" } } */
951+
952+int
953+__attribute__((visibility ("hidden")))
954+xyzzy = 5;
955diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/visibility-4.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/visibility-4.C
956--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/visibility-4.C 1970-01-01 01:00:00.000000000 +0100
957+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/visibility-4.C 2003-12-10 06:34:45.000000000 +0000
958@@ -0,0 +1,8 @@
959+/* Test visibility attribute on forward declaration of global variable */
960+/* { dg-do compile { target *86-*-linux* } } */
961+/* { dg-final { scan-assembler "\\.hidden.*xyzzy" } } */
962+
963+extern int __attribute__ ((visibility ("hidden")))
964+xyzzy;
965+
966+int xyzzy = 5;
967diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/visibility-5.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/visibility-5.C
968--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/visibility-5.C 1970-01-01 01:00:00.000000000 +0100
969+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/visibility-5.C 2003-12-10 06:34:45.000000000 +0000
970@@ -0,0 +1,11 @@
971+/* Test visibility attribute on definition of a function that has
972+ already had a forward declaration. */
973+/* { dg-do compile { target *86-*-linux* } } */
974+/* { dg-final { scan-assembler "\\.hidden.*_Z3foov" } } */
975+
976+void foo();
977+
978+void
979+ __attribute__((visibility ("hidden")))
980+foo()
981+{ }
982diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/visibility-6.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/visibility-6.C
983--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/visibility-6.C 1970-01-01 01:00:00.000000000 +0100
984+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/visibility-6.C 2003-12-10 06:34:45.000000000 +0000
985@@ -0,0 +1,10 @@
986+/* Test visibility attribute on definition of global variable that has
987+ already had a forward declaration. */
988+/* { dg-do compile { target *86-*-linux* } } */
989+/* { dg-final { scan-assembler "\\.hidden.*xyzzy" } } */
990+
991+extern int xyzzy;
992+
993+int
994+__attribute__((visibility ("hidden")))
995+xyzzy = 5;
996diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/visibility-7.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/visibility-7.C
997--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility/visibility-7.C 1970-01-01 01:00:00.000000000 +0100
998+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility/visibility-7.C 2003-12-10 06:34:45.000000000 +0000
999@@ -0,0 +1,11 @@
1000+/* Test warning from conflicting visibility specifications. */
1001+/* { dg-do compile { target *86-*-linux* } } */
1002+/* { dg-final { scan-assembler "\\.hidden.*xyzzy" } } */
1003+
1004+extern int
1005+__attribute__((visibility ("hidden")))
1006+xyzzy; /* { dg-warning "previous declaration here" "" } */
1007+
1008+int
1009+__attribute__((visibility ("protected")))
1010+xyzzy = 5; /* { dg-warning "visibility attribute ignored" "" } */
1011diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility-1.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility-1.C
1012--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility-1.C 2003-12-10 06:34:44.000000000 +0000
1013+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility-1.C 1970-01-01 01:00:00.000000000 +0100
1014@@ -1,8 +0,0 @@
1015-/* Test visibility attribute on function definition. */
1016-/* { dg-do compile { target *86-*-linux* } } */
1017-/* { dg-final { scan-assembler "\\.hidden.*_Z3foov" } } */
1018-
1019-void
1020-__attribute__((visibility ("hidden")))
1021-foo()
1022-{ }
1023diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility-2.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility-2.C
1024--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility-2.C 2003-12-10 06:34:44.000000000 +0000
1025+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility-2.C 1970-01-01 01:00:00.000000000 +0100
1026@@ -1,7 +0,0 @@
1027-/* Test that visibility attribute on declaration extends to definition. */
1028-/* { dg-do compile { target *86-*-linux* } } */
1029-/* { dg-final { scan-assembler "\\.hidden.*_Z3foov" } } */
1030-
1031-void __attribute__((visibility ("hidden"))) foo();
1032-
1033-void foo() { }
1034diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility-3.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility-3.C
1035--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility-3.C 2003-12-10 06:34:45.000000000 +0000
1036+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility-3.C 1970-01-01 01:00:00.000000000 +0100
1037@@ -1,7 +0,0 @@
1038-/* Test visibility attribute on forward declaration of global variable */
1039-/* { dg-do compile { target *86-*-linux* } } */
1040-/* { dg-final { scan-assembler "\\.hidden.*xyzzy" } } */
1041-
1042-int
1043-__attribute__((visibility ("hidden")))
1044-xyzzy = 5;
1045diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility-4.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility-4.C
1046--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility-4.C 2003-12-10 06:34:45.000000000 +0000
1047+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility-4.C 1970-01-01 01:00:00.000000000 +0100
1048@@ -1,8 +0,0 @@
1049-/* Test visibility attribute on forward declaration of global variable */
1050-/* { dg-do compile { target *86-*-linux* } } */
1051-/* { dg-final { scan-assembler "\\.hidden.*xyzzy" } } */
1052-
1053-extern int __attribute__ ((visibility ("hidden")))
1054-xyzzy;
1055-
1056-int xyzzy = 5;
1057diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility-5.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility-5.C
1058--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility-5.C 2003-12-10 06:34:45.000000000 +0000
1059+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility-5.C 1970-01-01 01:00:00.000000000 +0100
1060@@ -1,11 +0,0 @@
1061-/* Test visibility attribute on definition of a function that has
1062- already had a forward declaration. */
1063-/* { dg-do compile { target *86-*-linux* } } */
1064-/* { dg-final { scan-assembler "\\.hidden.*_Z3foov" } } */
1065-
1066-void foo();
1067-
1068-void
1069- __attribute__((visibility ("hidden")))
1070-foo()
1071-{ }
1072diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility-6.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility-6.C
1073--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility-6.C 2003-12-10 06:34:45.000000000 +0000
1074+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility-6.C 1970-01-01 01:00:00.000000000 +0100
1075@@ -1,10 +0,0 @@
1076-/* Test visibility attribute on definition of global variable that has
1077- already had a forward declaration. */
1078-/* { dg-do compile { target *86-*-linux* } } */
1079-/* { dg-final { scan-assembler "\\.hidden.*xyzzy" } } */
1080-
1081-extern int xyzzy;
1082-
1083-int
1084-__attribute__((visibility ("hidden")))
1085-xyzzy = 5;
1086diff -Naur gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility-7.C gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility-7.C
1087--- gcc-3.4.0orig/gcc/testsuite/g++.dg/ext/visibility-7.C 2003-12-10 06:34:45.000000000 +0000
1088+++ gcc-3.4.0/gcc/testsuite/g++.dg/ext/visibility-7.C 1970-01-01 01:00:00.000000000 +0100
1089@@ -1,11 +0,0 @@
1090-/* Test warning from conflicting visibility specifications. */
1091-/* { dg-do compile { target *86-*-linux* } } */
1092-/* { dg-final { scan-assembler "\\.hidden.*xyzzy" } } */
1093-
1094-extern int
1095-__attribute__((visibility ("hidden")))
1096-xyzzy; /* { dg-warning "previous declaration here" "" } */
1097-
1098-int
1099-__attribute__((visibility ("protected")))
1100-xyzzy = 5; /* { dg-warning "visibility attribute ignored" "" } */
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