I get a reduced test case for this bug. Attached here.
segv fault is cause by following code snip in cp/mangle.c
static tree
mangle_decl_string (const tree decl)
{
...
input_location = DECL_SOURCE_LOCATION (decl); // input_location is ZERO
...
write_mangled_name (decl, true); // Segv fault is triggers in child
calls.
}
This piece of code is backported from gcc 4.5 to fix GCC PR42748,
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42748
The decl is __PRETTY_FUNCTION__, and input_location on FSF 4.5 is NOT
zero. DECL_SOURCE_LOCATION should return non-zero value for
__PRETTY_FUNCTION__, so that it could be mangled.
Still investigating it.
** Bug watch added: GCC Bugzilla #42748
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42748
** Attachment added: "reduced test case"
https://bugs.launchpad.net/ubuntu/+source/gcc-4.4/+bug/647597/+attachment/1652552/+files/WAbstractArea.C
--
Internal compiler error while building package 'witty'
https://bugs.launchpad.net/bugs/647597
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