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| author | Richard Biener <rguenther@suse.de> | 2016-11-23 11:24:55 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2016-11-23 11:24:55 +0000 |
| commit | efb71232412323c504f3af95ed6679abfd15cb7a (patch) | |
| tree | a697ff65416b8a61c02dab5a71350e0bd9eabab7 /gcc/tree.c | |
| parent | a5bb8a5ceae1bfb0fa82a58254a6539c8943d4b8 (diff) | |
| download | gcc-efb71232412323c504f3af95ed6679abfd15cb7a.zip gcc-efb71232412323c504f3af95ed6679abfd15cb7a.tar.gz gcc-efb71232412323c504f3af95ed6679abfd15cb7a.tar.bz2 | |
re PR lto/78472 (warning: type of 's' does not match original declaration from zero length bitfield in C vs C++)
2016-11-23 Richard Biener <rguenther@suse.de>
PR lto/78472
* tree.c (gimple_canonical_types_compatible_p): Ignore zero-sized
fields.
lto/
* lto.c (hash_canonical_type): Ignore zero-sized fields.
* g++.dg/lto/pr78472_0.c: New testcase.
* g++.dg/lto/pr78472_1.C: Likewise.
From-SVN: r242746
Diffstat (limited to 'gcc/tree.c')
| -rw-r--r-- | gcc/tree.c | 10 |
1 files changed, 7 insertions, 3 deletions
@@ -13708,10 +13708,14 @@ gimple_canonical_types_compatible_p (const_tree t1, const_tree t2, f1 || f2; f1 = TREE_CHAIN (f1), f2 = TREE_CHAIN (f2)) { - /* Skip non-fields. */ - while (f1 && TREE_CODE (f1) != FIELD_DECL) + /* Skip non-fields and zero-sized fields. */ + while (f1 && (TREE_CODE (f1) != FIELD_DECL + || (DECL_SIZE (f1) + && integer_zerop (DECL_SIZE (f1))))) f1 = TREE_CHAIN (f1); - while (f2 && TREE_CODE (f2) != FIELD_DECL) + while (f2 && (TREE_CODE (f2) != FIELD_DECL + || (DECL_SIZE (f2) + && integer_zerop (DECL_SIZE (f2))))) f2 = TREE_CHAIN (f2); if (!f1 || !f2) break; |