https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87967
Bug ID: 87967
Summary: ice in slpeel_duplicate_current_defs_from_edges
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
For this C++ code:
void h();
template <typename b> struct k { using d = b; };
template <typename b, template <typename> class> using e = k<b>;
template <typename b, template <typename> class f>
using g = typename e<b, f>::d;
struct l {
template <typename i> using ab = typename i::j;
};
struct n : l {
using j = g<char *, ab>;
};
class o {
public:
long r();
};
char m;
char s() {
if (m)
return '0';
return 'A';
}
class t {
public:
typedef char *ad;
ad m_fn2();
};
void fn3() {
char *a;
t b;
bool p = false;
while (*a) {
h();
o c;
if (*a)
a++;
if (c.r()) {
n::j q;
for (t::ad d = b.m_fn2(), e; d != e; d++) {
char f = *q;
*d = f + s();
}
p = true;
}
}
if (p)
throw;
}
compiled with recent gcc trunk and compiler flag -O3, does this:
during GIMPLE pass: vect
bug476.cc: In function ‘void fn3()’:
bug476.cc:27:6: internal compiler error: Segmentation fault
27 | void fn3() {
| ^~~
0xfa4967 crash_signal
../../trunk/gcc/toplev.c:325
0x12185e4 contains_struct_check(tree_node*, tree_node_structure_enum, char
const
*, int, char const*)
../../trunk/gcc/tree.h:3267
0x12185e4 slpeel_duplicate_current_defs_from_edges
../../trunk/gcc/tree-vect-loop-manip.c:985
The bug seems to have appeared between revision 265790 and 265846.
