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ACPICA: gcc-specific: Fix possible issue with the strchr function.

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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>
This commit is contained in:
Bob Moore 2014-04-04 12:37:19 +08:00 committed by Rafael J. Wysocki
parent 6085bb18af
commit 7ed8232648
1 changed files with 11 additions and 0 deletions
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11
include/acpi/platform/acgcc.h
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@ -64,4 +64,15 @@
*/ */
#define ACPI_UNUSED_VAR __attribute__ ((unused)) #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__ */ #endif /* __ACGCC_H__ */