diff options
Diffstat (limited to 'meta/recipes-devtools/opkg/opkg/0001-Define-alignof-using-_Alignof-when-using-C11-or-newe.patch')
-rw-r--r-- | meta/recipes-devtools/opkg/opkg/0001-Define-alignof-using-_Alignof-when-using-C11-or-newe.patch | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/meta/recipes-devtools/opkg/opkg/0001-Define-alignof-using-_Alignof-when-using-C11-or-newe.patch b/meta/recipes-devtools/opkg/opkg/0001-Define-alignof-using-_Alignof-when-using-C11-or-newe.patch deleted file mode 100644 index 3406878a1d..0000000000 --- a/meta/recipes-devtools/opkg/opkg/0001-Define-alignof-using-_Alignof-when-using-C11-or-newe.patch +++ /dev/null | |||
@@ -1,51 +0,0 @@ | |||
1 | From 4089affd371e6d62dd8c1e57b344f8cc329005ea Mon Sep 17 00:00:00 2001 | ||
2 | From: Khem Raj <raj.khem@gmail.com> | ||
3 | Date: Sat, 14 Jan 2023 23:11:08 -0800 | ||
4 | Subject: [PATCH] Define alignof using _Alignof when using C11 or newer | ||
5 | |||
6 | WG14 N2350 made very clear that it is an UB having type definitions | ||
7 | within "offsetof" [1]. This patch enhances the implementation of macro | ||
8 | alignof_slot to use builtin "_Alignof" to avoid undefined behavior on | ||
9 | when using std=c11 or newer | ||
10 | |||
11 | clang 16+ has started to flag this [2] | ||
12 | |||
13 | Fixes build when using -std >= gnu11 and using clang16+ | ||
14 | |||
15 | Older compilers gcc < 4.9 or clang < 8 has buggy _Alignof even though it | ||
16 | may support C11, exclude those compilers too | ||
17 | |||
18 | [1] https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2350.htm | ||
19 | [2] https://reviews.llvm.org/D133574 | ||
20 | |||
21 | Upstream-Status: Submitted [https://groups.google.com/g/opkg-devel/c/gjcQPZgT_jI] | ||
22 | Signed-off-by: Khem Raj <raj.khem@gmail.com> | ||
23 | --- | ||
24 | libopkg/md5.c | 10 ++++++++++ | ||
25 | 1 file changed, 10 insertions(+) | ||
26 | |||
27 | diff --git a/libopkg/md5.c b/libopkg/md5.c | ||
28 | index 981b9b8..ccb645e 100644 | ||
29 | --- a/libopkg/md5.c | ||
30 | +++ b/libopkg/md5.c | ||
31 | @@ -237,7 +237,17 @@ void md5_process_bytes(const void *buffer, size_t len, struct md5_ctx *ctx) | ||
32 | /* Process available complete blocks. */ | ||
33 | if (len >= 64) { | ||
34 | #if !_STRING_ARCH_unaligned | ||
35 | +/* GCC releases before GCC 4.9 had a bug in _Alignof. See GCC bug 52023 | ||
36 | + <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52023>. | ||
37 | + clang versions < 8.0.0 have the same bug. */ | ||
38 | +#if (!defined __STDC_VERSION__ || __STDC_VERSION__ < 201112 \ | ||
39 | + || (defined __GNUC__ && __GNUC__ < 4 + (__GNUC_MINOR__ < 9) \ | ||
40 | + && !defined __clang__) \ | ||
41 | + || (defined __clang__ && __clang_major__ < 8)) | ||
42 | #define alignof(type) offsetof (struct { char c; type x; }, x) | ||
43 | +#else | ||
44 | +#define alignof(type) _Alignof(type) | ||
45 | +#endif | ||
46 | #define UNALIGNED_P(p) (((size_t) p) % alignof (uint32_t) != 0) | ||
47 | if (UNALIGNED_P(buffer)) | ||
48 | while (len > 64) { | ||
49 | -- | ||
50 | 2.39.0 | ||
51 | |||