https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83727
Bug ID: 83727
Summary: [8 Regression] ICE (Segmentation fault) in
local_class_index
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at gcc dot gnu.org
Target Milestone: ---
seen with r256272, building kakoune
$ cat normal.ii
namespace a {
template <typename b, int c> b *begin(b (&)[c]);
}
class d {
public:
d(const char *);
};
struct e {
int f;
d docstring;
void (*func)(int &, int);
};
namespace a {
template <typename h, typename g> h i(h, h, g) { return 0; }
}
using a::begin;
template <typename j, typename k>
auto i(j &&container, k l) -> decltype(begin(container)) {
return a::i(container, container, l);
}
enum { m };
template <int> void n(int &, int) {
[] {
struct p {
} o[]{{}};
i(o, p{});
};
}
e cmds{'i', "", n<m>};
$ g++ -std=gnu++11 -c -O0 normal.ii
normal.ii: In instantiation of 'decltype (a::begin(container)) i(j&&, k) [with
j = n(int&, int)::<lambda()> [with int <anonymous> = 0]::p (&)[1]; k = n(int&,
int)::<lambda()> [with int <anonymous> = 0]::p]':
normal.ii:18:6: required from here
normal.ii:18:6: internal compiler error: Segmentation fault
auto i(j &&container, k l) -> decltype(begin(container)) {
^
0x8803dda crash_signal
../../src/gcc/toplev.c:325
0x834effb local_class_index
../../src/gcc/cp/mangle.c:1925
0x83515a6 discriminator_for_local_entity
../../src/gcc/cp/mangle.c:1957
0x83515a6 write_local_name
../../src/gcc/cp/mangle.c:2058
0x83515a6 write_name
../../src/gcc/cp/mangle.c:964
0x8353698 write_encoding
../../src/gcc/cp/mangle.c:825
0x8351427 write_local_name
../../src/gcc/cp/mangle.c:2027
0x8351427 write_name
../../src/gcc/cp/mangle.c:964
0x8351ded write_class_enum_type
../../src/gcc/cp/mangle.c:2809
0x8351ded write_type
../../src/gcc/cp/mangle.c:2222
0x8352595 write_array_type
../../src/gcc/cp/mangle.c:3599
0x8352595 write_type
../../src/gcc/cp/mangle.c:2146
0x8351f05 write_type
../../src/gcc/cp/mangle.c:2303
0x8356b9b write_template_args
../../src/gcc/cp/mangle.c:2838
0x8351334 write_name
../../src/gcc/cp/mangle.c:933
0x8353698 write_encoding
../../src/gcc/cp/mangle.c:825
0x8357244 mangle_decl_string
../../src/gcc/cp/mangle.c:3791
0x835743d get_mangled_id
../../src/gcc/cp/mangle.c:3813
0x835743d mangle_decl(tree_node*)
../../src/gcc/cp/mangle.c:3851
0x89d1886 decl_assembler_name(tree_node*)
../../src/gcc/tree.c:687
Please submit a full bug report,
with preprocessed source if appropriate.
