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| author | Jakub Jelinek <jakub@redhat.com> | 2011-11-10 15:40:34 +0000 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2011-11-10 15:40:34 +0000 |
| commit | 00e0dd562e323683ee3a096a82ca7a1367e9236d (patch) | |
| tree | ab09cad2f5bd98719ee66798ec564bd0f5745126 /gcc/vec.h | |
| parent | e6c0a9766868b629b8a992284677c99575b568d2 (diff) | |
* vec.h (VEC_BASE): If base is at offset 0 in the structure,
use &(P)->base even if P is NULL.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@181258 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/vec.h')
| -rw-r--r-- | gcc/vec.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/vec.h b/gcc/vec.h index 789e8e2d4df..d47795879f1 100644 --- a/gcc/vec.h +++ b/gcc/vec.h @@ -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) \ |