https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80374
Bug ID: 80374
Summary: [7 Regression] ICE in fold_convert_loc, at
fold-const.c:2384
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: law at gcc dot gnu.org
Target Milestone: ---
Starting from r246187, we ICE on:
$ cat ice.ii
void a (const char *, const char *, int, const char *)
__attribute__ ((__noreturn__));
template <typename b, int>
void
c () try
{
throw;
}
catch (b d)
{
if (d)
a ("", "", 2, __PRETTY_FUNCTION__);
}
main ()
{
using e = decltype (nullptr);
c<volatile e, true> ();
}
$ g++ -O ice.ii -std=c++14
ice.ii: In function ‘void c() [with b = std::nullptr_t; int <anonymous> = 1]’:
ice.ii:5:1: internal compiler error: in fold_convert_loc, at fold-const.c:2384
c () try
^
0xc7540c fold_convert_loc(unsigned int, tree_node*, tree_node*)
../../gcc/fold-const.c:2384
0x10ebd42 derive_equivalences_from_bit_ior
../../gcc/tree-ssa-dom.c:709
0x10ebf18 record_temporary_equivalences(edge_def*, const_and_copies*,
avail_exprs_stack*)
../../gcc/tree-ssa-dom.c:763
0x10ec533 record_equivalences_from_incoming_edge
../../gcc/tree-ssa-dom.c:946
0x10ecd89 dom_opt_dom_walker::before_dom_children(basic_block_def*)
../../gcc/tree-ssa-dom.c:1167
0x16c69c2 dom_walker::walk(basic_block_def*)
../../gcc/domwalk.c:265
0x10eb476 execute
../../gcc/tree-ssa-dom.c:459
