diff options
Diffstat (limited to 'gcc/c-common.c')
| -rw-r--r-- | gcc/c-common.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/c-common.c b/gcc/c-common.c index 16e17b39d1d..8a6d15b9d9b 100644 --- a/gcc/c-common.c +++ b/gcc/c-common.c @@ -4183,6 +4183,15 @@ c_common_get_alias_set (tree t) tree u; PTR *slot; + /* For VLAs, use the alias set of the element type rather than the + default of alias set 0 for types compared structurally. */ + if (TYPE_P (t) && TYPE_STRUCTURAL_EQUALITY_P (t)) + { + if (TREE_CODE (t) == ARRAY_TYPE) + return get_alias_set (TREE_TYPE (t)); + return -1; + } + /* Permit type-punning when accessing a union, provided the access is directly through the union. For example, this code does not permit taking the address of a union member and then storing |