diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2002-02-22 22:09:09 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2002-02-22 22:09:09 +0100 |
| commit | 3256b817fc4df76420ab88b8f83dabeb66939360 (patch) | |
| tree | a72c0063813e38c6c4dd851832a48761e804370e /gcc/stmt.c | |
| parent | 9e0625a316b67773587f024b1d8d7814d9246876 (diff) | |
| download | gcc-3256b817fc4df76420ab88b8f83dabeb66939360.zip gcc-3256b817fc4df76420ab88b8f83dabeb66939360.tar.gz gcc-3256b817fc4df76420ab88b8f83dabeb66939360.tar.bz2 | |
re PR c++/5748 (g++ dies with optimization)
PR c++/5748
* stmt.c (expand_anon_union_decl): Set TREE_USED on the anon union
decl if any of elements was TREE_USED.
* g++.dg/opt/anonunion1.C: New test.
From-SVN: r49971
Diffstat (limited to 'gcc/stmt.c')
| -rw-r--r-- | gcc/stmt.c | 5 |
1 files changed, 5 insertions, 0 deletions
@@ -4201,6 +4201,11 @@ expand_anon_union_decl (decl, cleanup, decl_elts) tree cleanup_elt = TREE_PURPOSE (t); enum machine_mode mode = TYPE_MODE (TREE_TYPE (decl_elt)); + /* If any of the elements are addressable, so is the entire + union. */ + if (TREE_USED (decl_elt)) + TREE_USED (decl) = 1; + /* Propagate the union's alignment to the elements. */ DECL_ALIGN (decl_elt) = DECL_ALIGN (decl); DECL_USER_ALIGN (decl_elt) = DECL_USER_ALIGN (decl); |