https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103081
Bug ID: 103081
Summary: [ICE] with "using enum"
Product: gcc
Version: 11.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: terra at gnome dot org
Target Milestone: ---
This code triggers an internal compiler error.
------------------------------------------------
enum class Pig { OINK };
struct Hog {
using enum Pig;
Hog(Pig) { }
};
template <unsigned>
void pen() {
(void)Hog(Hog::OINK);
}
void pen() {
pen<0>();
}
------------------------------------------------
.../gcc/11.1.0/bin/g++ -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE
-pedantic-errors -Wall -Wno-unknown-pragmas -W -fsigned-char -malign-data=abi
-fno-semantic-interposition -gz=zlib-gnu -c -march=westmere -mmmx -mno-3dnow
-msse -msse2 -msse3 -mssse3 -mno-sse4a -mcx16 -msahf -mno-movbe -mno-aes
-mno-sha -mno-pclmul -mpopcnt -mno-abm -mno-lwp -mno-fma -mno-fma4 -mno-xop
-mno-bmi -mno-sgx -mno-bmi2 -mno-tbm -mno-avx -mno-avx2 -msse4.2 -msse4.1
-mno-lzcnt -mno-rtm -mno-hle -mno-rdrnd -mno-f16c -mno-fsgsbase -mno-rdseed
-mno-prfchw -mno-adx -mfxsr -mno-xsave -mno-xsaveopt -mno-avx512f -mno-avx512er
-mno-avx512cd -mno-avx512pf -mno-prefetchwt1 -mno-clflushopt -mno-xsavec
-mno-xsaves -mno-avx512dq -mno-avx512bw -mno-avx512vl -mno-avx512ifma
-mno-avx512vbmi -mno-avx5124fmaps -mno-avx5124vnniw -mno-clwb -mno-mwaitx
-mno-clzero -mno-pku -mno-rdpid --param "l1-cache-size=32" --param
"l1-cache-line-size=64" --param "l2-cache-size=12288" -mtune=westmere
-std=gnu++20 -Wrestrict -Wdangling-else -Wno-placement-new
-Wno-deprecated-declarations -fno-strict-overflow
-Wzero-as-null-pointer-constant -Wwrite-strings -Wno-ignored-qualifiers
-Wno-array-bounds -Wno-mismatched-new-delete -Wdeprecated-copy
-Wdeprecated-copy-dtor -Wredundant-move -m32 -mfpmath=sse -Woverloaded-virtual
-fPIC -g -o /home/welinder/using-enum_L111a3.o /home/welinder/using-enum.C
/home/welinder/using-enum.C: In instantiation of ‘void pen() [with unsigned int
<anonymous> = 0]’:
/home/welinder/using-enum.C:14:9: required from here
/home/welinder/using-enum.C:10:18: internal compiler error: in tsubst_copy, at
cp/pt.c:16715
10 | (void)Hog(Hog::OINK);
| ~~~~~^~~~
0x669a60 tsubst_copy
../../../gcc-11.1.0/gcc/cp/pt.c:16715
0x802d0c tsubst_qualified_id
../../../gcc-11.1.0/gcc/cp/pt.c:16449
0x8041b6 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../../gcc-11.1.0/gcc/cp/pt.c:19948
0x814e01 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../../gcc-11.1.0/gcc/cp/pt.c:19587
0x814e01 tsubst_tree_list(tree_node*, tree_node*, int, tree_node*)
../../../gcc-11.1.0/gcc/cp/pt.c:15417
0x8037fa tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../../gcc-11.1.0/gcc/cp/pt.c:20586
0x804f67 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../../gcc-11.1.0/gcc/cp/pt.c:19587
0x804f67 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../../gcc-11.1.0/gcc/cp/pt.c:19797
0x814e01 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../../gcc-11.1.0/gcc/cp/pt.c:19587
0x814e01 tsubst_tree_list(tree_node*, tree_node*, int, tree_node*)
../../../gcc-11.1.0/gcc/cp/pt.c:15417
0x8037fa tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../../gcc-11.1.0/gcc/cp/pt.c:20586
0x804f67 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../../gcc-11.1.0/gcc/cp/pt.c:19587
0x804f67 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../../gcc-11.1.0/gcc/cp/pt.c:19797
0x815114 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../../gcc-11.1.0/gcc/cp/pt.c:19587
0x815114 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../../gcc-11.1.0/gcc/cp/pt.c:19198
0x816181 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../../gcc-11.1.0/gcc/cp/pt.c:18223
0x816181 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../../gcc-11.1.0/gcc/cp/pt.c:18268
0x815c4f tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../../gcc-11.1.0/gcc/cp/pt.c:18223
0x815c4f tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../../gcc-11.1.0/gcc/cp/pt.c:18589
0x809719 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../../gcc-11.1.0/gcc/cp/pt.c:25909
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.
Return code for compiling using-enum.C: 1
This is an x86_64 system running OpenSuSE 15.2.
