From 5cb883f67d00a63531ef195c242763d36b1905ca Mon Sep 17 00:00:00 2001 From: Joshua Watt Date: Fri, 9 Feb 2018 12:46:38 -0600 Subject: [PATCH] Use fallthrough attribute Use __attribute__ ((fallthrough)) to indicate switch case fall through instead of a comment. This ensure that the fallthrough warning is not triggered even if the file is pre-processed (hence stripping the comments) before it is compiled. The actual fallback implementation is hidden behind a FALLBACK macro in case the compiler doesn't support it. Finally, the -Wimplict-fallthrough warning was upgraded to only allow the attribute to satisfy it; a comment alone is no longer sufficient. Signed-off-by: Joshua Watt Upstream-Status: Submitted [1] [1] https://sourceware.org/ml/elfutils-devel/2018-q1/msg00027.html --- backends/aarch64_retval.c | 2 +- backends/alpha_retval.c | 4 ++-- backends/arm_regs.c | 2 +- backends/arm_retval.c | 2 +- backends/i386_regs.c | 2 +- backends/i386_retval.c | 4 ++-- backends/ia64_retval.c | 2 +- backends/linux-core-note.c | 2 +- backends/m68k_retval.c | 4 ++-- backends/mips_retval.c | 4 ++-- backends/parisc_retval.c | 5 +++-- backends/ppc64_retval.c | 6 +++--- backends/ppc_regs.c | 2 +- backends/ppc_retval.c | 4 ++-- backends/s390_retval.c | 4 ++-- backends/sh_retval.c | 2 +- backends/sparc_retval.c | 2 +- backends/tilegx_retval.c | 4 ++-- backends/x86_64_regs.c | 2 +- backends/x86_64_retval.c | 2 +- config/eu.am | 4 +++- configure.ac | 6 ++++++ lib/eu-config.h | 7 +++++++ libcpu/i386_disasm.c | 2 +- libcpu/i386_parse.c | 4 ++-- libdw/cfi.c | 4 ++-- libdw/dwarf_frame_register.c | 2 +- libdwfl/dwfl_report_elf.c | 2 +- libdwfl/frame_unwind.c | 2 +- libebl/eblobjnote.c | 2 +- libelf/elf32_updatenull.c | 2 +- libelf/elf_begin.c | 4 ++-- libelf/elf_cntl.c | 2 +- src/addr2line.c | 2 +- src/elfcompress.c | 2 +- src/elflint.c | 8 ++++---- src/objdump.c | 2 +- src/readelf.c | 8 ++++---- src/strings.c | 2 +- tests/backtrace.c | 2 +- tests/elfstrmerge.c | 3 ++- 41 files changed, 75 insertions(+), 58 deletions(-) diff --git a/backends/aarch64_retval.c b/backends/aarch64_retval.c index 68de307..1308340 100644 --- a/backends/aarch64_retval.c +++ b/backends/aarch64_retval.c @@ -292,7 +292,7 @@ aarch64_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) assert (count > 0); if (count <= 4) return pass_hfa (locp, base_size, count); - /* Fall through. */ + FALLTHROUGH; case 1: /* Not a HFA. */ diff --git a/backends/alpha_retval.c b/backends/alpha_retval.c index 53dbfa4..d9bae3b 100644 --- a/backends/alpha_retval.c +++ b/backends/alpha_retval.c @@ -85,7 +85,7 @@ alpha_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) typedie = dwarf_formref_die (attr, &die_mem); tag = DWARF_TAG_OR_RETURN (typedie); } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_base_type: case DW_TAG_enumeration_type: @@ -131,7 +131,7 @@ alpha_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) } } - /* Else fall through. */ + FALLTHROUGH; case DW_TAG_structure_type: case DW_TAG_class_type: diff --git a/backends/arm_regs.c b/backends/arm_regs.c index 4ee1039..418c931 100644 --- a/backends/arm_regs.c +++ b/backends/arm_regs.c @@ -81,7 +81,7 @@ arm_register_info (Ebl *ebl __attribute__ ((unused)), * but gcc maps FPA registers here */ regno += 96 - 16; - /* Fall through. */ + FALLTHROUGH; case 96 + 0 ... 96 + 7: *setname = "FPA"; *type = DW_ATE_float; diff --git a/backends/arm_retval.c b/backends/arm_retval.c index 8687eab..313e4eb 100644 --- a/backends/arm_retval.c +++ b/backends/arm_retval.c @@ -90,7 +90,7 @@ arm_return_value_location_ (Dwarf_Die *functypedie, const Dwarf_Op **locp, typedie = dwarf_formref_die (attr, &die_mem); tag = DWARF_TAG_OR_RETURN (typedie); } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_base_type: case DW_TAG_enumeration_type: diff --git a/backends/i386_regs.c b/backends/i386_regs.c index fd963a6..7ec93bb 100644 --- a/backends/i386_regs.c +++ b/backends/i386_regs.c @@ -92,7 +92,7 @@ i386_register_info (Ebl *ebl __attribute__ ((unused)), case 5: case 8: *type = DW_ATE_address; - /* Fallthrough */ + FALLTHROUGH; case 0 ... 3: case 6 ... 7: name[0] = 'e'; diff --git a/backends/i386_retval.c b/backends/i386_retval.c index 4aa646f..32fec72 100644 --- a/backends/i386_retval.c +++ b/backends/i386_retval.c @@ -85,7 +85,7 @@ i386_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) typedie = dwarf_formref_die (attr, &die_mem); tag = DWARF_TAG_OR_RETURN (typedie); } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_base_type: case DW_TAG_enumeration_type: @@ -123,7 +123,7 @@ i386_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) if (size <= 8) return nloc_intregpair; } - /* Fallthrough */ + FALLTHROUGH; case DW_TAG_structure_type: case DW_TAG_class_type: diff --git a/backends/ia64_retval.c b/backends/ia64_retval.c index dcd5f28..03ea4d8 100644 --- a/backends/ia64_retval.c +++ b/backends/ia64_retval.c @@ -260,7 +260,7 @@ ia64_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) typedie = dwarf_formref_die (attr, &die_mem); tag = DWARF_TAG_OR_RETURN (typedie); } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_base_type: case DW_TAG_enumeration_type: diff --git a/backends/linux-core-note.c b/backends/linux-core-note.c index 67638d7..5f06c89 100644 --- a/backends/linux-core-note.c +++ b/backends/linux-core-note.c @@ -226,7 +226,7 @@ EBLHOOK(core_note) (const GElf_Nhdr *nhdr, const char *name, if (memcmp (name, "CORE", nhdr->n_namesz) == 0) break; /* Buggy old Linux kernels didn't terminate "LINUX". */ - /* Fall through. */ + FALLTHROUGH; case sizeof "LINUX": if (memcmp (name, "LINUX", nhdr->n_namesz) == 0) diff --git a/backends/m68k_retval.c b/backends/m68k_retval.c index c68ed02..a653ba3 100644 --- a/backends/m68k_retval.c +++ b/backends/m68k_retval.c @@ -92,7 +92,7 @@ m68k_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) typedie = dwarf_formref_die (attr, &die_mem); tag = DWARF_TAG_OR_RETURN (typedie); } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_base_type: case DW_TAG_enumeration_type: @@ -135,7 +135,7 @@ m68k_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) if (size <= 8) return nloc_intregpair; } - /* Fallthrough */ + FALLTHROUGH; case DW_TAG_structure_type: case DW_TAG_class_type: case DW_TAG_union_type: diff --git a/backends/mips_retval.c b/backends/mips_retval.c index 57487bb..c6e1ffe 100644 --- a/backends/mips_retval.c +++ b/backends/mips_retval.c @@ -306,7 +306,7 @@ mips_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) typedie = dwarf_formref_die (attr, &die_mem); tag = dwarf_tag (typedie); } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_base_type: case DW_TAG_enumeration_type: @@ -389,7 +389,7 @@ mips_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) } } - /* Fallthrough to handle large types */ + FALLTHROUGH; /* Fallthrough to handle large types */ case DW_TAG_array_type: large: diff --git a/backends/parisc_retval.c b/backends/parisc_retval.c index df7ec3a..1f1e91a 100644 --- a/backends/parisc_retval.c +++ b/backends/parisc_retval.c @@ -116,7 +116,7 @@ parisc_return_value_location_ (Dwarf_Die *functypedie, const Dwarf_Op **locp, in typedie = dwarf_formref_die (attr, &die_mem); tag = dwarf_tag (typedie); } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_base_type: case DW_TAG_enumeration_type: @@ -167,6 +167,7 @@ parisc_return_value_location_ (Dwarf_Die *functypedie, const Dwarf_Op **locp, in /* Else fall through. */ } + FALLTHROUGH; case DW_TAG_structure_type: case DW_TAG_class_type: @@ -189,7 +190,7 @@ parisc_return_value_location_ (Dwarf_Die *functypedie, const Dwarf_Op **locp, in *locp = loc_aggregate; return nloc_aggregate; #endif - /* fall through. */ + FALLTHROUGH; } } diff --git a/backends/ppc64_retval.c b/backends/ppc64_retval.c index a251983..eb1c11e 100644 --- a/backends/ppc64_retval.c +++ b/backends/ppc64_retval.c @@ -96,7 +96,7 @@ ppc64_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) typedie = dwarf_formref_die (attr, &die_mem); tag = DWARF_TAG_OR_RETURN (typedie); } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_base_type: case DW_TAG_enumeration_type: @@ -141,7 +141,7 @@ ppc64_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) return nloc_intreg; } - /* Else fall through. */ + FALLTHROUGH; case DW_TAG_structure_type: case DW_TAG_class_type: case DW_TAG_union_type: @@ -161,7 +161,7 @@ ppc64_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) return nloc_vmxreg; } } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_string_type: if (dwarf_aggregate_size (typedie, &size) == 0 && size <= 8) diff --git a/backends/ppc_regs.c b/backends/ppc_regs.c index c2d5011..43d2534 100644 --- a/backends/ppc_regs.c +++ b/backends/ppc_regs.c @@ -140,7 +140,7 @@ ppc_register_info (Ebl *ebl __attribute__ ((unused)), case 100: if (*bits == 32) return stpcpy (name, "mq") + 1 - name; - /* Fallthrough */ + FALLTHROUGH; case 102 ... 107: name[0] = 's'; name[1] = 'p'; diff --git a/backends/ppc_retval.c b/backends/ppc_retval.c index b14a99f..39b42da 100644 --- a/backends/ppc_retval.c +++ b/backends/ppc_retval.c @@ -108,7 +108,7 @@ ppc_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) typedie = dwarf_formref_die (attr, &die_mem); tag = DWARF_TAG_OR_RETURN (typedie); } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_base_type: case DW_TAG_enumeration_type: @@ -172,7 +172,7 @@ ppc_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) return nloc_intregquad; } } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_structure_type: case DW_TAG_class_type: diff --git a/backends/s390_retval.c b/backends/s390_retval.c index a927d46..2043f98 100644 --- a/backends/s390_retval.c +++ b/backends/s390_retval.c @@ -87,7 +87,7 @@ s390_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) typedie = dwarf_formref_die (attr, &die_mem); tag = DWARF_TAG_OR_RETURN (typedie); } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_base_type: case DW_TAG_enumeration_type: @@ -127,7 +127,7 @@ s390_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) return size <= asize ? nloc_intreg : nloc_intregpair; } } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_structure_type: case DW_TAG_class_type: diff --git a/backends/sh_retval.c b/backends/sh_retval.c index d44f260..33d7d96 100644 --- a/backends/sh_retval.c +++ b/backends/sh_retval.c @@ -84,7 +84,7 @@ sh_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) typedie = dwarf_formref_die (attr, &die_mem); tag = DWARF_TAG_OR_RETURN (typedie); } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_base_type: case DW_TAG_enumeration_type: diff --git a/backends/sparc_retval.c b/backends/sparc_retval.c index e1b1775..fb81cdc 100644 --- a/backends/sparc_retval.c +++ b/backends/sparc_retval.c @@ -91,7 +91,7 @@ sparc_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) typedie = dwarf_formref_die (attr, &die_mem); tag = DWARF_TAG_OR_RETURN (typedie); } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_base_type: case DW_TAG_enumeration_type: diff --git a/backends/tilegx_retval.c b/backends/tilegx_retval.c index db81a20..7f7d24b 100644 --- a/backends/tilegx_retval.c +++ b/backends/tilegx_retval.c @@ -79,7 +79,7 @@ tilegx_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) typedie = dwarf_formref_die (attr, &die_mem); tag = DWARF_TAG_OR_RETURN (typedie); } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_base_type: case DW_TAG_enumeration_type: @@ -113,7 +113,7 @@ tilegx_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) return nloc_intreg; } - /* Else fall through. */ + FALLTHROUGH; case DW_TAG_structure_type: case DW_TAG_class_type: case DW_TAG_union_type: diff --git a/backends/x86_64_regs.c b/backends/x86_64_regs.c index 8430440..ef987da 100644 --- a/backends/x86_64_regs.c +++ b/backends/x86_64_regs.c @@ -87,7 +87,7 @@ x86_64_register_info (Ebl *ebl __attribute__ ((unused)), case 6 ... 7: *type = DW_ATE_address; - /* Fallthrough */ + FALLTHROUGH; case 0 ... 5: name[0] = 'r'; name[1] = baseregs[regno][0]; diff --git a/backends/x86_64_retval.c b/backends/x86_64_retval.c index b3799ae..f9114cb 100644 --- a/backends/x86_64_retval.c +++ b/backends/x86_64_retval.c @@ -100,7 +100,7 @@ x86_64_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp) typedie = dwarf_formref_die (attr, &die_mem); tag = DWARF_TAG_OR_RETURN (typedie); } - /* Fall through. */ + FALLTHROUGH; case DW_TAG_base_type: case DW_TAG_enumeration_type: diff --git a/config/eu.am b/config/eu.am index 8fe1e25..b6ec581 100644 --- a/config/eu.am +++ b/config/eu.am @@ -62,7 +62,9 @@ NULL_DEREFERENCE_WARNING= endif if HAVE_IMPLICIT_FALLTHROUGH_WARNING -IMPLICIT_FALLTHROUGH_WARNING=-Wimplicit-fallthrough +# Use strict fallthrough. Only __attribute__((fallthrough)) will prevent the +# warning +IMPLICIT_FALLTHROUGH_WARNING=-Wimplicit-fallthrough=5 else IMPLICIT_FALLTHROUGH_WARNING= endif diff --git a/configure.ac b/configure.ac index 1f1856d..698efbb 100644 --- a/configure.ac +++ b/configure.ac @@ -360,6 +360,12 @@ CFLAGS="$old_CFLAGS"]) AM_CONDITIONAL(HAVE_IMPLICIT_FALLTHROUGH_WARNING, [test "x$ac_cv_implicit_fallthrough" != "xno"]) +# Assume the fallthrough attribute is supported if -Wimplict-fallthrough is supported +if test "$ac_cv_implicit_fallthrough" = "yes"; then + AC_DEFINE([HAVE_FALLTHROUGH], [1], + [Defined if __attribute__((fallthrough)) is supported]) +fi + dnl Check if we have argp available from our libc AC_LINK_IFELSE( [AC_LANG_PROGRAM( diff --git a/lib/eu-config.h b/lib/eu-config.h index 400cdc6..e8d4ec2 100644 --- a/lib/eu-config.h +++ b/lib/eu-config.h @@ -186,5 +186,12 @@ asm (".section predict_data, \"aw\"; .previous\n" # define COMPAT_VERSION(name, version, prefix) error "should use #ifdef SYMBOL_VERSIONING" #endif +#ifndef FALLTHROUGH +# ifdef HAVE_FALLTHROUGH +# define FALLTHROUGH __attribute__ ((fallthrough)) +# else +# define FALLTHROUGH ((void) 0) +# endif +#endif #endif /* eu-config.h */ diff --git a/libcpu/i386_disasm.c b/libcpu/i386_disasm.c index 60fd6d4..837a3a8 100644 --- a/libcpu/i386_disasm.c +++ b/libcpu/i386_disasm.c @@ -819,7 +819,7 @@ i386_disasm (Ebl *ebl __attribute__((unused)), ++param_start; break; } - /* Fallthrough */ + FALLTHROUGH; default: str = ""; assert (! "INVALID not handled"); diff --git a/libcpu/i386_parse.c b/libcpu/i386_parse.c index ef1ac35..6fa7ce3 100644 --- a/libcpu/i386_parse.c +++ b/libcpu/i386_parse.c @@ -1047,7 +1047,7 @@ yytnamerr (char *yyres, const char *yystr) case '\\': if (*++yyp != '\\') goto do_not_strip_quotes; - /* Fall through. */ + FALLTHROUGH; default: if (yyres) yyres[yyn] = *yyp; @@ -2042,7 +2042,7 @@ yyabortlab: yyexhaustedlab: yyerror (YY_("memory exhausted")); yyresult = 2; - /* Fall through. */ + FALLTHROUGH; #endif yyreturn: diff --git a/libdw/cfi.c b/libdw/cfi.c index daa845f..341e055 100644 --- a/libdw/cfi.c +++ b/libdw/cfi.c @@ -138,7 +138,7 @@ execute_cfi (Dwarf_CFI *cache, case DW_CFA_advance_loc1: operand = *program++; - /* Fallthrough */ + FALLTHROUGH; case DW_CFA_advance_loc + 0 ... DW_CFA_advance_loc + CFI_PRIMARY_MAX: advance_loc: loc += operand * cie->code_alignment_factor; @@ -301,7 +301,7 @@ execute_cfi (Dwarf_CFI *cache, case DW_CFA_restore_extended: get_uleb128 (operand, program, end); - /* Fallthrough */ + FALLTHROUGH; case DW_CFA_restore + 0 ... DW_CFA_restore + CFI_PRIMARY_MAX: if (unlikely (abi_cfi) && likely (opcode == DW_CFA_restore)) diff --git a/libdw/dwarf_frame_register.c b/libdw/dwarf_frame_register.c index 37e8e91..d0159fb 100644 --- a/libdw/dwarf_frame_register.c +++ b/libdw/dwarf_frame_register.c @@ -62,7 +62,7 @@ dwarf_frame_register (Dwarf_Frame *fs, int regno, Dwarf_Op *ops_mem, /* Use the default rule for registers not yet mentioned in CFI. */ if (fs->cache->default_same_value) goto same_value; - /*FALLTHROUGH*/ + FALLTHROUGH; case reg_undefined: /* The value is known to be unavailable. */ break; diff --git a/libdwfl/dwfl_report_elf.c b/libdwfl/dwfl_report_elf.c index 6950a37..3fc9384 100644 --- a/libdwfl/dwfl_report_elf.c +++ b/libdwfl/dwfl_report_elf.c @@ -174,7 +174,7 @@ __libdwfl_elf_address_range (Elf *elf, GElf_Addr base, bool add_p_vaddr, /* An assigned base address is meaningless for these. */ base = 0; add_p_vaddr = true; - /* Fallthrough. */ + FALLTHROUGH; case ET_DYN: default:; size_t phnum; diff --git a/libdwfl/frame_unwind.c b/libdwfl/frame_unwind.c index 4dc9c43..eaea495 100644 --- a/libdwfl/frame_unwind.c +++ b/libdwfl/frame_unwind.c @@ -442,7 +442,7 @@ expr_eval (Dwfl_Frame *state, Dwarf_Frame *frame, const Dwarf_Op *ops, } if (val1 == 0) break; - /* FALLTHRU */ + FALLTHROUGH; case DW_OP_skip:; Dwarf_Word offset = op->offset + 1 + 2 + (int16_t) op->number; const Dwarf_Op *found = bsearch ((void *) (uintptr_t) offset, ops, nops, diff --git a/libebl/eblobjnote.c b/libebl/eblobjnote.c index f80a1a5..ca4f155 100644 --- a/libebl/eblobjnote.c +++ b/libebl/eblobjnote.c @@ -223,7 +223,7 @@ ebl_object_note (Ebl *ebl, const char *name, uint32_t type, free (buf); break; } - /* FALLTHROUGH */ + FALLTHROUGH; default: /* Unknown type. */ diff --git a/libelf/elf32_updatenull.c b/libelf/elf32_updatenull.c index a51bf70..5351518 100644 --- a/libelf/elf32_updatenull.c +++ b/libelf/elf32_updatenull.c @@ -232,7 +232,7 @@ __elfw2(LIBELFBITS,updatenull_wrlock) (Elf *elf, int *change_bop, size_t shnum) __libelf_seterrno (ELF_E_GROUP_NOT_REL); return -1; } - /* FALLTHROUGH */ + FALLTHROUGH; case SHT_SYMTAB_SHNDX: sh_entsize = elf_typesize (32, ELF_T_WORD, 1); break; diff --git a/libelf/elf_begin.c b/libelf/elf_begin.c index 6f85038..6de206a 100644 --- a/libelf/elf_begin.c +++ b/libelf/elf_begin.c @@ -582,7 +582,7 @@ read_unmmaped_file (int fildes, off_t offset, size_t maxsize, Elf_Cmd cmd, ? sizeof (Elf32_Ehdr) : sizeof (Elf64_Ehdr))) return file_read_elf (fildes, NULL, mem.header, offset, maxsize, cmd, parent); - /* FALLTHROUGH */ + FALLTHROUGH; default: break; @@ -1097,7 +1097,7 @@ elf_begin (int fildes, Elf_Cmd cmd, Elf *ref) retval = NULL; break; } - /* FALLTHROUGH */ + FALLTHROUGH; case ELF_C_READ: case ELF_C_READ_MMAP: diff --git a/libelf/elf_cntl.c b/libelf/elf_cntl.c index ab13ffb..fd68178 100644 --- a/libelf/elf_cntl.c +++ b/libelf/elf_cntl.c @@ -62,7 +62,7 @@ elf_cntl (Elf *elf, Elf_Cmd cmd) result = -1; break; } - /* FALLTHROUGH */ + FALLTHROUGH; case ELF_C_FDDONE: /* Mark the file descriptor as not usable. */ diff --git a/src/addr2line.c b/src/addr2line.c index ba414a7..444ee52 100644 --- a/src/addr2line.c +++ b/src/addr2line.c @@ -618,7 +618,7 @@ handle_address (const char *string, Dwfl *dwfl) case 1: addr = 0; j = i; - /* Fallthrough */ + FALLTHROUGH; case 2: if (string[j] != '\0') break; diff --git a/src/elfcompress.c b/src/elfcompress.c index 8e0d5c5..25378a4 100644 --- a/src/elfcompress.c +++ b/src/elfcompress.c @@ -149,7 +149,7 @@ parse_opt (int key, char *arg __attribute__ ((unused)), N_("Only one input file allowed together with '-o'")); /* We only use this for checking the number of arguments, we don't actually want to consume them. */ - /* Fallthrough */ + FALLTHROUGH; default: return ARGP_ERR_UNKNOWN; } diff --git a/src/elflint.c b/src/elflint.c index 51e53c2..df1b3a0 100644 --- a/src/elflint.c +++ b/src/elflint.c @@ -1764,7 +1764,7 @@ section [%2d] '%s': entry %zu: pointer does not match address of section [%2d] ' if (dyn->d_tag < DT_ADDRRNGLO || dyn->d_tag > DT_ADDRRNGHI) /* Value is no pointer. */ break; - /* FALLTHROUGH */ + FALLTHROUGH; case DT_AUXILIARY: case DT_FILTER: @@ -3993,7 +3993,7 @@ section [%2zu] '%s': merge flag set but entry size is zero\n"), case SHT_NOBITS: if (is_debuginfo) break; - /* Fallthrough */ + FALLTHROUGH; default: ERROR (gettext ("\ section [%2zu] '%s' has unexpected type %d for an executable section\n"), @@ -4137,7 +4137,7 @@ section [%2zu] '%s': ELF header says this is the section header string table but ERROR (gettext ("\ section [%2zu] '%s': relocatable files cannot have dynamic symbol tables\n"), cnt, section_name (ebl, cnt)); - /* FALLTHROUGH */ + FALLTHROUGH; case SHT_SYMTAB: check_symtab (ebl, ehdr, shdr, cnt); break; @@ -4336,7 +4336,7 @@ section [%2d] '%s': unknown core file note type %" PRIu32 if (nhdr.n_namesz == sizeof "Linux" && !memcmp (data->d_buf + name_offset, "Linux", sizeof "Linux")) break; - /* Fallthrough */ + FALLTHROUGH; default: if (shndx == 0) ERROR (gettext ("\ diff --git a/src/objdump.c b/src/objdump.c index 860cfac..0dd9a6a 100644 --- a/src/objdump.c +++ b/src/objdump.c @@ -223,7 +223,7 @@ parse_opt (int key, char *arg, } /* We only use this for checking the number of arguments, we don't actually want to consume them. */ - /* Fallthrough */ + FALLTHROUGH; default: return ARGP_ERR_UNKNOWN; } diff --git a/src/readelf.c b/src/readelf.c index 346eccd..6a27e7e 100644 --- a/src/readelf.c +++ b/src/readelf.c @@ -465,7 +465,7 @@ parse_opt (int key, char *arg, print_string_sections = true; break; } - /* Fall through. */ + FALLTHROUGH; case 'x': add_dump_section (arg, false); any_control_option = true; @@ -6029,7 +6029,7 @@ attr_callback (Dwarf_Attribute *attrp, void *arg) dwarf_form_name (form), (uintmax_t) num); return DWARF_CB_OK; } - /* else fallthrough */ + FALLTHROUGH; /* These cases always take a loclistptr and no constant. */ case DW_AT_location: @@ -6195,7 +6195,7 @@ attr_callback (Dwarf_Attribute *attrp, void *arg) print_block (block.length, block.data); break; } - /* Fall through. */ + FALLTHROUGH; case DW_AT_location: case DW_AT_data_location: @@ -9227,7 +9227,7 @@ handle_auxv_note (Ebl *ebl, Elf *core, GElf_Word descsz, GElf_Off desc_pos) printf (" %s\n", name); break; } - /* Fall through */ + FALLTHROUGH; case 'x': /* hex */ case 'p': /* address */ case 's': /* address of string */ diff --git a/src/strings.c b/src/strings.c index d214356..03d0f13 100644 --- a/src/strings.c +++ b/src/strings.c @@ -246,7 +246,7 @@ parse_opt (int key, char *arg, case 'b': case 'B': big_endian = true; - /* FALLTHROUGH */ + FALLTHROUGH; case 'l': case 'L': diff --git a/tests/backtrace.c b/tests/backtrace.c index 21abe8a..f5dd761 100644 --- a/tests/backtrace.c +++ b/tests/backtrace.c @@ -127,7 +127,7 @@ callback_verify (pid_t tid, unsigned frameno, Dwarf_Addr pc, assert (symname2 == NULL || strcmp (symname2, "jmp") != 0); break; } - /* FALLTHRU */ + FALLTHROUGH; case 4: /* Some simple frame unwinders get this wrong and think sigusr2 is calling itself again. Allow it and just pretend there is diff --git a/tests/elfstrmerge.c b/tests/elfstrmerge.c index 8d5b53c..62c549d 100644 --- a/tests/elfstrmerge.c +++ b/tests/elfstrmerge.c @@ -578,7 +578,8 @@ main (int argc, char **argv) break; case SHT_DYNAMIC: - /* Fallthrough. There are string indexes in here, but + FALLTHROUGH; + /* There are string indexes in here, but they (should) point to a allocated string table, which we don't alter. */ default: -- 2.14.3