Hi,
In this PR51928, it tries to look_for_tm_attr_overrides on a thunk but
there is no DECL_NAME for thunk. So it fails in
lookup_fnfields_idx_nolazy because name is NULL.
#0 0x0000000000764b5a in lookup_fnfields_idx_nolazy
(type=0x7ffff69f77e0, name=0x0) at ../../trunk/gcc/cp/search.c:1384
#1 0x000000000076551a in lookup_fnfields_1 (type=0x7ffff69f77e0,
name=0x0) at ../../trunk/gcc/cp/search.c:1470
#2 0x000000000076886e in look_for_overrides_here (type=0x7ffff69f77e0,
fndecl=0x7ffff69f8800) at ../../trunk/gcc/cp/search.c:2026
#3 0x0000000000635a94 in look_for_tm_attr_overrides
(type=0x7ffff6a091f8, fndecl=0x7ffff69f8800) at
../../trunk/gcc/cp/class.c:4337
I hope the good way to solve this is to use the THUNK_TARGET instead of
the thunk itself. (or just ignore when it is a thunk?)
Tested on x86_64-unknown-linux-gnu.
Thanks.
--
Patrick Marlier.
Changelog
2012-01-23 Patrick Marlier <patrick.marl...@gmail.com>
PR c++/51928
* cp/class.c (set_method_tm_attributes): Use TARGET_THUNK instead of
thunk for set_one_vmethod_tm_attributes.
testsuite/Changelog
2012-01-23 Patrick Marlier <patrick.marl...@gmail.com>
PR c++/51928
* g++.dg/tm/pr51928.C: New test.
Index: cp/class.c
===================================================================
--- cp/class.c (revision 183448)
+++ cp/class.c (working copy)
@@ -4430,7 +4430,12 @@ set_method_tm_attributes (tree t)
tree vchain;
for (vchain = BINFO_VIRTUALS (TYPE_BINFO (t)); vchain;
vchain = TREE_CHAIN (vchain))
- set_one_vmethod_tm_attributes (t, BV_FN (vchain));
+ {
+ fndecl = BV_FN (vchain);
+ if (DECL_THUNK_P (fndecl))
+ fndecl = THUNK_TARGET (fndecl);
+ set_one_vmethod_tm_attributes (t, fndecl);
+ }
}
/* If the class doesn't have an attribute, nothing more to do. */
