https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86191
Bug ID: 86191
Summary: A missing error message?
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: zhonghao at pku dot org.cn
Target Milestone: ---
The code is as follow:
template<int i> struct g {};
template<int i, int j> void f(g<i/j>) { }
template<int i, int j> void f(g<j>) { }
int main()
{
f<4,2>(g<4/2>());
}
When clang++ compiles the code, it produces the following messages:
1gcc01.cpp:8:3: error: call to 'f' is ambiguous
1gcc01.cpp:3:29: note: candidate function [with i = 4, j = 2]
1gcc01.cpp:4:29: note: candidate function [with i = 4, j = 2]
template<int i, int j> void f(g<j>) { }
However, when g++ compiles the code, it does not produce any error messages. Is
the code legal or not? For me, it seems that the messages of clang++ are
reasonable.
