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| author | Jan Hubicka <hubicka@ucw.cz> | 2015-03-07 21:33:58 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2015-03-07 20:33:58 +0000 |
| commit | a7384b1b02a158cf644f36cc26dc1f4064394435 (patch) | |
| tree | 91f63bc1abbe313000a21842ded438002ddcf52e /gcc/tree.c | |
| parent | e291927919ac6a7bd0d6fa8848b2acf5f27c959f (diff) | |
| download | gcc-a7384b1b02a158cf644f36cc26dc1f4064394435.tar.gz | |
re PR lto/65316 (LTO: Uninitialized memory / ICE with -g -fno-lto-odr-type-merging: in types_same_for_odr, at ipa-devirt.c:465)
PR ipa/65316
* tree.c (free_lang_data_in_type): Be sure to keep BINFO_VTABLE
when outputting debug.
From-SVN: r221258
Diffstat (limited to 'gcc/tree.c')
| -rw-r--r-- | gcc/tree.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/tree.c b/gcc/tree.c index 29f70f8ec11..0b8e8961b08 100644 --- a/gcc/tree.c +++ b/gcc/tree.c @@ -5081,9 +5081,15 @@ free_lang_data_in_type (tree type) if (TYPE_BINFO (type)) { free_lang_data_in_binfo (TYPE_BINFO (type)); + /* We need to preserve link to bases and virtual table for all + polymorphic types to make devirtualization machinery working. + Debug output cares only about bases, but output also + virtual table pointers so merging of -fdevirtualize and + -fno-devirtualize units is easier. */ if ((!BINFO_VTABLE (TYPE_BINFO (type)) || !flag_devirtualize) - && (!BINFO_N_BASE_BINFOS (TYPE_BINFO (type)) + && ((!BINFO_N_BASE_BINFOS (TYPE_BINFO (type)) + && !BINFO_VTABLE (TYPE_BINFO (type))) || debug_info_level != DINFO_LEVEL_NONE)) TYPE_BINFO (type) = NULL; } |