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| author | Jakub Jelinek <jakub@redhat.com> | 2011-11-10 16:40:34 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2011-11-10 16:40:34 +0100 |
| commit | c8bf99b4e84b9b0783aca23ecc85425cb3569f16 (patch) | |
| tree | ab09cad2f5bd98719ee66798ec564bd0f5745126 /gcc/vec.h | |
| parent | 03989f55955ddb1f82ce79a7c2251039d0ba5d0e (diff) | |
| download | gcc-c8bf99b4e84b9b0783aca23ecc85425cb3569f16.zip gcc-c8bf99b4e84b9b0783aca23ecc85425cb3569f16.tar.gz gcc-c8bf99b4e84b9b0783aca23ecc85425cb3569f16.tar.bz2 | |
vec.h (VEC_BASE): If base is at offset 0 in the structure, use &(P)->base even if P is NULL.
* vec.h (VEC_BASE): If base is at offset 0 in the structure,
use &(P)->base even if P is NULL.
From-SVN: r181258
Diffstat (limited to 'gcc/vec.h')
| -rw-r--r-- | gcc/vec.h | 5 |
1 files changed, 5 insertions, 0 deletions
@@ -549,7 +549,12 @@ typedef struct VEC(T,A) \ } VEC(T,A) /* Convert to base type. */ +#if GCC_VERSION >= 4000 +#define VEC_BASE(P) \ + ((offsetof (__typeof (*P), base) == 0 || (P)) ? &(P)->base : 0) +#else #define VEC_BASE(P) ((P) ? &(P)->base : 0) +#endif /* Vector of integer-like object. */ #define DEF_VEC_I(T) \ |