diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/vec.h | 5 |
2 files changed, 8 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index faea63af24d..86515365d21 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,8 @@ 2011-11-10 Jakub Jelinek <jakub@redhat.com> + * vec.h (VEC_BASE): If base is at offset 0 in the structure, + use &(P)->base even if P is NULL. + PR rtl-optimization/51023 * combine.c (simplify_comparison) <case SIGN_EXTEND>: Don't use val_signbit_known_clear_p for signed comparison narrowing 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) \ |