diff options
Diffstat (limited to 'include/my_global.h')
| -rw-r--r-- | include/my_global.h | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/include/my_global.h b/include/my_global.h index e13c7c37b62..572df6a584d 100644 --- a/include/my_global.h +++ b/include/my_global.h @@ -556,22 +556,30 @@ int __void__; #endif #endif /* DONT_DEFINE_VOID */ -#if defined(_lint) || defined(FORCE_INIT_OF_VARS) -#define LINT_INIT(var) var=0 /* No uninitialize-warning */ +/* + Deprecated workaround for false-positive uninitialized variables + warnings. Those should be silenced using tool-specific heuristics. + + Enabled by default for g++ due to the bug referenced below. +*/ +#if defined(_lint) || defined(FORCE_INIT_OF_VARS) || \ + (defined(__GNUC__) && defined(__cplusplus)) +#define LINT_INIT(var) var= 0 #else #define LINT_INIT(var) #endif -/* +/* Suppress uninitialized variable warning without generating code. The _cplusplus is a temporary workaround for C++ code pending a fix - for a g++ bug (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34772). + for a g++ bug (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34772). */ -#if defined(_lint) || defined(FORCE_INIT_OF_VARS) || defined(__cplusplus) || \ - !defined(__GNUC__) +#if defined(_lint) || defined(FORCE_INIT_OF_VARS) || \ + defined(__cplusplus) || !defined(__GNUC__) #define UNINIT_VAR(x) x= 0 #else +/* GCC specific self-initialization which inhibits the warning. */ #define UNINIT_VAR(x) x= x #endif @@ -595,7 +603,6 @@ typedef unsigned short ushort; #define set_if_bigger(a,b) do { if ((a) < (b)) (a)=(b); } while(0) #define set_if_smaller(a,b) do { if ((a) > (b)) (a)=(b); } while(0) #define test_all_bits(a,b) (((a) & (b)) == (b)) -#define set_bits(type, bit_count) (sizeof(type)*8 <= (bit_count) ? ~(type) 0 : ((((type) 1) << (bit_count)) - (type) 1)) #define array_elements(A) ((uint) (sizeof(A)/sizeof(A[0]))) /* Define some general constants */ |