diff options
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index a628342..999d777 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -278,8 +278,13 @@ get_pointer_alignment (tree exp, unsigned int max_align) inner = max_align; while (handled_component_p (exp)) { + /* Fields in a structure can be packed, honour DECL_ALIGN + of the FIELD_DECL. For all other references the conservative + alignment is the element type alignment. */ if (TREE_CODE (exp) == COMPONENT_REF) inner = MIN (inner, DECL_ALIGN (TREE_OPERAND (exp, 1))); + else + inner = MIN (inner, TYPE_ALIGN (TREE_TYPE (exp))); exp = TREE_OPERAND (exp, 0); } if (TREE_CODE (exp) == FUNCTION_DECL) @@ -288,7 +293,7 @@ get_pointer_alignment (tree exp, unsigned int max_align) align = MIN (inner, DECL_ALIGN (exp)); #ifdef CONSTANT_ALIGNMENT else if (CONSTANT_CLASS_P (exp)) - align = CONSTANT_ALIGNMENT (exp, align); + align = MIN (inner, (unsigned)CONSTANT_ALIGNMENT (exp, align)); #endif else align = MIN (align, inner); |