diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-10-19 15:36:05 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-10-19 15:36:05 +0000 |
| commit | b35a8f4864f6fdabc2a47ad3c650248bbc6a4be7 (patch) | |
| tree | 9af82af05ff6db994ce02d04b87bc63d05a986ad /gcc/alias.c | |
| parent | c543e20e9160b14b98a82e563881796f6b7283f5 (diff) | |
| download | ppe42-gcc-b35a8f4864f6fdabc2a47ad3c650248bbc6a4be7.tar.gz ppe42-gcc-b35a8f4864f6fdabc2a47ad3c650248bbc6a4be7.zip | |
2007-10-19 Richard Guenther <rguenther@suse.de>
PR middle-end/33816
PR middle-end/32921
* stor-layout.c (layout_type): Assert that aggregates do not
have their alias sets set.
* alias.c (get_alias_set): Return alias set zero for incomplete
types, return the alias set of the element for incomplete array
types, but do not remember these.
* gfortran.dg/pr32921.f: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@129491 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/alias.c')
| -rw-r--r-- | gcc/alias.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/alias.c b/gcc/alias.c index 1ba1ce366d8..6bf67f3574f 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -611,6 +611,18 @@ get_alias_set (tree t) if (TYPE_ALIAS_SET_KNOWN_P (t)) return TYPE_ALIAS_SET (t); + /* We don't want to set TYPE_ALIAS_SET for incomplete types. */ + if (!COMPLETE_TYPE_P (t)) + { + /* For arrays with unknown size the conservative answer is the + alias set of the element type. */ + if (TREE_CODE (t) == ARRAY_TYPE) + return get_alias_set (TREE_TYPE (t)); + + /* But return zero as a conservative answer for incomplete types. */ + return 0; + } + /* See if the language has special handling for this type. */ set = lang_hooks.get_alias_set (t); if (set != -1) |
