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| author | Masahiro Yamada <masahiroy@kernel.org> | 2023-12-03 12:49:34 +0300 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2023-12-10 09:34:37 +0300 |
| commit | c9f2b8d45aa453ee58e66a9b0e7a54e170381585 (patch) | |
| tree | bbcf64207d05fdb0daaca65aff0e342d50754c74 /scripts/mod | |
| parent | 5cac96f937021de3b0fbc60cdc6d6c4ee5b2456d (diff) | |
| download | linux-c9f2b8d45aa453ee58e66a9b0e7a54e170381585.tar.xz | |
modpost: remove unreachable code after fatal()
Now compilers can recognize fatal() never returns.
While GCC 4.5 dropped support for -Wunreachable-code, Clang is capable
of detecting the unreachable code.
$ make HOSTCC=clang HOSTCFLAGS=-Wunreachable-code-return
[snip]
HOSTCC scripts/mod/modpost.o
scripts/mod/modpost.c:520:11: warning: 'return' will never be executed [-Wunreachable-code-return]
return 0;
^
scripts/mod/modpost.c:477:10: warning: 'return' will never be executed [-Wunreachable-code-return]
return 0;
^
2 warnings generated.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Diffstat (limited to 'scripts/mod')
| -rw-r--r-- | scripts/mod/modpost.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 3233946fa5f6..e2bc180cecc8 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -476,11 +476,9 @@ static int parse_elf(struct elf_info *info, const char *filename) fatal("%s: not relocatable object.", filename); /* Check if file offset is correct */ - if (hdr->e_shoff > info->size) { + if (hdr->e_shoff > info->size) fatal("section header offset=%lu in file '%s' is bigger than filesize=%zu\n", (unsigned long)hdr->e_shoff, filename, info->size); - return 0; - } if (hdr->e_shnum == SHN_UNDEF) { /* @@ -518,12 +516,11 @@ static int parse_elf(struct elf_info *info, const char *filename) const char *secname; int nobits = sechdrs[i].sh_type == SHT_NOBITS; - if (!nobits && sechdrs[i].sh_offset > info->size) { + if (!nobits && sechdrs[i].sh_offset > info->size) fatal("%s is truncated. sechdrs[i].sh_offset=%lu > sizeof(*hrd)=%zu\n", filename, (unsigned long)sechdrs[i].sh_offset, sizeof(*hdr)); - return 0; - } + secname = secstrings + sechdrs[i].sh_name; if (strcmp(secname, ".modinfo") == 0) { if (nobits) |