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authoramylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4>2005-08-23 12:27:53 +0000
committeramylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4>2005-08-23 12:27:53 +0000
commit2fd8477885f6e126171141ad7d315bd8386a2629 (patch)
treeefb0232bd620d3f2ac48704c6333162375b44560 /gcc/stor-layout.c
parenta1db3a6a2a654de91b45ed6d648a1b588ab640f0 (diff)
downloadppe42-gcc-2fd8477885f6e126171141ad7d315bd8386a2629.tar.gz
ppe42-gcc-2fd8477885f6e126171141ad7d315bd8386a2629.zip
gcc:
PR middle-end/23467 * stor-layout.c (finalize_type_size): Dont override existing alignment with a smaller alignment from the mode. testsuite: PR middle-end/23467 * gcc.c-torture/execute/pr23467.c: New test. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@103394 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/stor-layout.c')
-rw-r--r--gcc/stor-layout.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/gcc/stor-layout.c b/gcc/stor-layout.c
index 321a4d24ca4..0ec818d7fbd 100644
--- a/gcc/stor-layout.c
+++ b/gcc/stor-layout.c
@@ -1407,8 +1407,15 @@ finalize_type_size (tree type)
&& TREE_CODE (type) != QUAL_UNION_TYPE
&& TREE_CODE (type) != ARRAY_TYPE)))
{
- TYPE_ALIGN (type) = GET_MODE_ALIGNMENT (TYPE_MODE (type));
- TYPE_USER_ALIGN (type) = 0;
+ unsigned mode_align = GET_MODE_ALIGNMENT (TYPE_MODE (type));
+
+ /* Don't override a larger alignment requirement coming from a user
+ alignment of one of the fields. */
+ if (mode_align >= TYPE_ALIGN (type))
+ {
+ TYPE_ALIGN (type) = mode_align;
+ TYPE_USER_ALIGN (type) = 0;
+ }
}
/* Do machine-dependent extra alignment. */
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