https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111682
Bug ID: 111682
Summary: valgrind error in tsubst_template_decl
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Recent gcc trunk, built with valgrind, when given this C++ source code
from the clang testsuite:
template<typename T> struct A {
template<typename U> struct B;
template<typename U> struct B<U*>;
};
template<typename T> template<typename U> struct A<T>::B<U*> {};
template struct A<int>;
A<int>::B<int*> b;
template<typename T> struct B {
template<typename U> static const int var1;
template<typename U> static const int var1<U*>;
template<typename U> static const int var2;
};
template<typename T> template<typename U> const int B<T>::var1<U*> = 1;
template<typename T> template<typename U> const int B<T>::var2<U*> = 1;
template struct B<int>;
int b_test1[B<int>::var1<int*>];
int b_test2[B<int>::var2<int*>];
does this:
$ ~/gcc/results.20230927.valgrind/bin/gcc -c -w
./SemaTemplate/instantiate-partial-spec.cpp
==33844== Invalid read of size 2
==33844== at 0x8CCA6B: tsubst_template_decl(tree_node*, tree_node*, int,
tree_node*, tree_node*) (pt.cc:14684)
==33844== by 0x8B4469: tsubst_decl(tree_node*, tree_node*, int, bool)
(pt.cc:14933)
==33844== by 0x8CE78B: most_specialized_partial_spec(tree_node*, int, bool)
(pt.cc:26255)
