[v5] elf: fixes compile error when both enable -Werror and -DNDEBUG
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Context |
Check |
Description |
dj/TryBot-32bit |
success
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Build for i686
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dj/TryBot-apply_patch |
success
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Patch applied to master at the time it was sent
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Commit Message
Use -Werror and -DNDEBUG at the same time will
causes the following compilation errors:
cache.c: In function 'save_cache':
cache.c:758:15: error: unused variable 'old_offset' [-Werror=unused-variable]
758 | off64_t old_offset = lseek64 (fd, extension_offset, SEEK_SET);
| ^~~~~~~~~~
-DNDEBUG will disables the assertion.
Therefore, only the variables used by assertions do not take effect.
use __attribute__ ((unused)) to disable this warning.
---
elf/cache.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
@@ -754,7 +754,8 @@ save_cache (const char *cache_name)
if (opt_format != opt_format_old)
{
/* Align file position to 4. */
- off64_t old_offset = lseek64 (fd, extension_offset, SEEK_SET);
+ __attribute__ ((unused)) off64_t old_offset
+ = lseek64 (fd, extension_offset, SEEK_SET);
assert ((unsigned long long int) (extension_offset - old_offset) < 4);
write_extensions (fd, str_offset, extension_offset);
}