https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62134
Bug ID: 62134
Summary: ICE with template alias in c++11 / c++1y mode
Product: gcc
Version: 4.9.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: lloda at bluewin dot ch
Created attachment 33318
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33318&action=edit
A test case. The problematic section is marked with MAKE_ICE.
Somewhat reduced case0.C attached.
> $CXX -v
Using built-in specs.
COLLECT_GCC=/opt/gcc-4.9/bin/g++
COLLECT_LTO_WRAPPER=/mnt/end/opt/gcc-4.9.1/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.9.1/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../../src/gcc-4.9.1/configure --prefix=/opt/gcc-4.9.1
--enable-lto --enable-languages=c,c++,fortran --disable-multilib
Thread model: posix
gcc version 4.9.1 (GCC)
> $CXX case0.C -DMAKE_ICE -std=c++11
case0.C: In substitution of ‘template<class A> using type =
PermutationSign<std::tuple<>, R> [with A = std::tuple<>]’:
case0.C:100:67: required from ‘const int FindCombination<std::tuple<>,
std::tuple<std::tuple<> > >::where’
case0.C:135:27: required from here
case0.C:115:58: internal compiler error: in retrieve_specialization, at
cp/pt.c:1048
template <class A> using type = PermutationSign<P, A>;
^
0x55ebb7 retrieve_specialization
../../../src/gcc-4.9.1/gcc/cp/pt.c:1045
0x570136 tsubst_decl
../../../src/gcc-4.9.1/gcc/cp/pt.c:11045
0x568e57 tsubst(tree_node*, tree_node*, int, tree_node*)
../../../src/gcc-4.9.1/gcc/cp/pt.c:11525
0x57160b instantiate_template_1
../../../src/gcc-4.9.1/gcc/cp/pt.c:15538
0x57160b instantiate_template(tree_node*, tree_node*, int)
../../../src/gcc-4.9.1/gcc/cp/pt.c:15588
0x568f78 instantiate_alias_template
../../../src/gcc-4.9.1/gcc/cp/pt.c:15618
0x568f78 tsubst(tree_node*, tree_node*, int, tree_node*)
../../../src/gcc-4.9.1/gcc/cp/pt.c:11552
0x56cc35 lookup_template_class_1
../../../src/gcc-4.9.1/gcc/cp/pt.c:7660
0x56cc35 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
../../../src/gcc-4.9.1/gcc/cp/pt.c:7886
0x569590 tsubst(tree_node*, tree_node*, int, tree_node*)
../../../src/gcc-4.9.1/gcc/cp/pt.c:11781
0x570f65 tsubst_qualified_id
../../../src/gcc-4.9.1/gcc/cp/pt.c:12426
0x5617d1 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../../src/gcc-4.9.1/gcc/cp/pt.c:14411
0x561310 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../../src/gcc-4.9.1/gcc/cp/pt.c:14332
0x565e0f tsubst_expr
../../../src/gcc-4.9.1/gcc/cp/pt.c:14016
0x569a4c tsubst_template_arg
../../../src/gcc-4.9.1/gcc/cp/pt.c:9454
0x56dda2 tsubst_template_args
../../../src/gcc-4.9.1/gcc/cp/pt.c:9993
0x56e2c7 tsubst_aggr_type
../../../src/gcc-4.9.1/gcc/cp/pt.c:10190
0x568725 tsubst(tree_node*, tree_node*, int, tree_node*)
../../../src/gcc-4.9.1/gcc/cp/pt.c:12122
0x56dda2 tsubst_template_args
../../../src/gcc-4.9.1/gcc/cp/pt.c:9993
0x568948 tsubst(tree_node*, tree_node*, int, tree_node*)
../../../src/gcc-4.9.1/gcc/cp/pt.c:11909
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with preprocessed source if appropriate.
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