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| author | Jakub Jelinek <jakub@redhat.com> | 2008-12-18 08:52:07 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2008-12-18 08:52:07 +0100 |
| commit | 9f68560cb5dd86f27ed0df035cc4821b39885887 (patch) | |
| tree | 91fd1cf626b84fa232d2aee6cfc4d4636ae95b43 /gcc/tree-ssa.c | |
| parent | 18430d277c64c6a61a818890fd6a7be69f288ae8 (diff) | |
| download | gcc-9f68560cb5dd86f27ed0df035cc4821b39885887.zip gcc-9f68560cb5dd86f27ed0df035cc4821b39885887.tar.gz gcc-9f68560cb5dd86f27ed0df035cc4821b39885887.tar.bz2 | |
re PR middle-end/38505 (Revision 142061 caused ICE on __builtin_memcpy)
PR middle-end/38505
* tree-ssa.c (useless_type_conversion_p_1): Return
false if inner_type is incomplete and outer_type is complete.
* gcc.c-torture/compile/pr38505.c: New test.
From-SVN: r142806
Diffstat (limited to 'gcc/tree-ssa.c')
| -rw-r--r-- | gcc/tree-ssa.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/tree-ssa.c b/gcc/tree-ssa.c index 935cad6..ce0f1e4 100644 --- a/gcc/tree-ssa.c +++ b/gcc/tree-ssa.c @@ -1188,6 +1188,11 @@ useless_type_conversion_p_1 (tree outer_type, tree inner_type) if (TREE_CODE (inner_type) != TREE_CODE (outer_type)) return false; + /* Conversion from an incomplete to a complete type is never + useless. */ + if (!COMPLETE_TYPE_P (inner_type) && COMPLETE_TYPE_P (outer_type)) + return false; + /* ??? This seems to be necessary even for aggregates that don't have TYPE_STRUCTURAL_EQUALITY_P set. */ |