diff options
| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-11-10 15:40:34 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-11-10 15:40:34 +0000 |
| commit | 70d084dd57d253ff12430402490318f1366d93b8 (patch) | |
| tree | ab09cad2f5bd98719ee66798ec564bd0f5745126 /gcc | |
| parent | 49f816eb342a8f9c387daf358782d8f587386aac (diff) | |
| download | gcc-70d084dd57d253ff12430402490318f1366d93b8.tar.gz | |
* vec.h (VEC_BASE): If base is at offset 0 in the structure,
use &(P)->base even if P is NULL.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@181258 138bc75d-0d04-0410-961f-82ee72b054a4
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) \ |