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| author | Bob Moore <robert.moore@intel.com> | 2014-04-04 12:37:19 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-04-20 22:59:37 +0200 |
| commit | 7ed823264845f7c2f14d3278405e593ddfdc50f6 (patch) | |
| tree | b587bc9dc38c2d0b152eb585e5abd9158836959b /include/acpi | |
| parent | 6085bb18afa431823a6287a0aa4d13641acb658d (diff) | |
| download | linux-0-day-7ed823264845f7c2f14d3278405e593ddfdc50f6.tar.gz linux-0-day-7ed823264845f7c2f14d3278405e593ddfdc50f6.tar.xz | |
ACPICA: gcc-specific: Fix possible issue with the strchr function.
Some versions of gcc implement strchr via a macro, which either
contains bugs or can provoke a bug in the compiler. This change
fixes a possible compile-time error when using this function.
The problem is usually seen when compiling the getopt.c module.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/acpi')
| -rw-r--r-- | include/acpi/platform/acgcc.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/acpi/platform/acgcc.h b/include/acpi/platform/acgcc.h index a476b9118b49b..384875da37137 100644 --- a/include/acpi/platform/acgcc.h +++ b/include/acpi/platform/acgcc.h @@ -64,4 +64,15 @@ */ #define ACPI_UNUSED_VAR __attribute__ ((unused)) +/* + * Some versions of gcc implement strchr() with a buggy macro. So, + * undef it here. Prevents error messages of this form (usually from the + * file getopt.c): + * + * error: logical '&&' with non-zero constant will always evaluate as true + */ +#ifdef strchr +#undef strchr +#endif + #endif /* __ACGCC_H__ */ |