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| author | Jia Tan <jiat0218@gmail.com> | 2023-09-27 00:02:11 +0800 |
|---|---|---|
| committer | Jia Tan <jiat0218@gmail.com> | 2023-10-31 18:44:59 +0800 |
| commit | 1bce6fe48334b5df33d0487a9cbe41950122230e (patch) | |
| tree | 18f1d73b0c73b846d239fad0668fa3179dfaab5d /src/liblzma/check/crc64_table.c | |
| parent | Build: Update the comment about -Werror usage in checks. (diff) | |
| download | xz-1bce6fe48334b5df33d0487a9cbe41950122230e.tar.xz | |
liblzma: Avoid compiler warning without creating extra symbol.
When the generic fast crc64 method is used, then we omit
lzma_crc64_table[][].
The C standards don't allow an empty translation unit which can be
avoided by declaring something, without exporting any symbols.
Diffstat (limited to 'src/liblzma/check/crc64_table.c')
| -rw-r--r-- | src/liblzma/check/crc64_table.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/src/liblzma/check/crc64_table.c b/src/liblzma/check/crc64_table.c index 241adcd4..688e527b 100644 --- a/src/liblzma/check/crc64_table.c +++ b/src/liblzma/check/crc64_table.c @@ -18,10 +18,8 @@ #if (defined(__x86_64__) && defined(__SSSE3__) \ && defined(__SSE4_1__) && defined(__PCLMUL__)) \ || (defined(__e2k__) && __iset__ >= 6) -// No table needed but something has to be exported to keep some toolchains -// happy. Also use a declaration to silence compiler warnings. -extern const char lzma_crc64_dummy; -const char lzma_crc64_dummy; +// No table needed. Use a typedef to avoid an empty translation unit. +typedef void lzma_crc64_dummy; #else // Having the declaration here silences clang -Wmissing-variable-declarations. |