https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95063
Bug ID: 95063
Summary: [11 Regression] ICE in tsubst_decl, at cp/pt.c:14633
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
g++-11.0.0-alpha20200510 snapshot (g:13a46321516e2efd3bbb1f1899c539c6724240a9)
ICEs when compiling the following testcase, extracted from
test/OpenMP/for_ast_print.cpp from the clang 10.0.0 test suite, w/ -fopenmp:
struct S {
S(): a(0) {}
S(int v) : a(v) {}
int a;
typedef int type;
};
template <typename T>
class S7 : public T {
protected:
T a;
T &b;
typename T::type c:12;
typename T::type &d;
public:
S7(typename T::type v) : a(v), b(a), c(v), d(a.a) {
#pragma omp for linear(val(c))
for (int k = 0; k < a.a; ++k)
++this->a.a;
}
};
class S8 : public S7<S> {
public:
S8(int v) : S7<S>(v) {
}
};
% g++-11.0.0 -fopenmp -c epvsqux2.cpp
epvsqux2.cpp: In constructor 'S7<T>::S7(typename T::type)':
epvsqux2.cpp:18:28: error: modifier should not be specified in 'linear' clause
on 'simd' or 'for' constructs
18 | #pragma omp for linear(val(c))
| ^
epvsqux2.cpp: In instantiation of 'S7<T>::S7(typename T::type) [with T = S;
typename T::type = int]':
epvsqux2.cpp:26:22: required from here
epvsqux2.cpp:18:31: internal compiler error: in tsubst_decl, at cp/pt.c:14633
18 | #pragma omp for linear(val(c))
| ^
0x6607d0 tsubst_decl
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200510/work/gcc-11-20200510/gcc/cp/pt.c:14633
0x9f6fa6 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200510/work/gcc-11-20200510/gcc/cp/pt.c:17938
0x9f4ea0 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200510/work/gcc-11-20200510/gcc/cp/pt.c:17836
0x9f51f7 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200510/work/gcc-11-20200510/gcc/cp/pt.c:18155
0x9f4ea0 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200510/work/gcc-11-20200510/gcc/cp/pt.c:17836
0x9f51f7 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200510/work/gcc-11-20200510/gcc/cp/pt.c:18155
0x9f22fa instantiate_decl(tree_node*, bool, bool)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200510/work/gcc-11-20200510/gcc/cp/pt.c:25708
0xa2335b instantiate_pending_templates(int)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200510/work/gcc-11-20200510/gcc/cp/pt.c:25824
0x9276e3 c_parse_final_cleanups()
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200510/work/gcc-11-20200510/gcc/cp/decl2.c:4889
clang++ 10.0.0 accepts this code.
