https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83471
Bug ID: 83471
Summary: [7 regression] internal compiler error: in
mark_reachable_handlers, at tree-eh.c:3854
Product: gcc
Version: 7.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: skpgkp1 at gmail dot com
CC: hjl.tools at gmail dot com, rguenth at gcc dot gnu.org
Target Milestone: ---
This issue appear in GCC 7 mariadb build. GCC 7 revision 255682 regressed with
internal error. Following are steps to reproduce.
$ cat array.cpp.i.cpp
class a {
public:
void *operator new(unsigned long, int);
};
class b : public a {
public:
b();
virtual int c() {}
void m_fn2();
};
int d;
void e() {
long f;
b *g;
(f);
g = new (d) b;
g->c();
g->m_fn2();
}
$ g++ --version
g++ (GCC) 7.2.1 20171215
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ g++ -O2 -o array.cpp.i.cpp.o -c array.cpp.i.cpp
array.cpp.i.cpp: In function ‘void e()’:
array.cpp.i.cpp:19:1: internal compiler error: in mark_reachable_handlers, at
tree-eh.c:3854
}
^
0xb2962d mark_reachable_handlers
../../gcc-7.3O40/gcc/tree-eh.c:3854
0xb29662 remove_unreachable_handlers
../../gcc-7.3O40/gcc/tree-eh.c:3901
0xb2b19a execute_cleanup_eh_1
../../gcc-7.3O40/gcc/tree-eh.c:4574
0xb2b19a execute
../../gcc-7.3O40/gcc/tree-eh.c:4641
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
GCC 7 revision 255681 is good.
