https://bugs.llvm.org/show_bug.cgi?id=47702
Bug ID: 47702
Summary: auto function return the reference of a local variable
not the value
Product: clang
Version: 11.0
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected],
[email protected]
Hi, the following code returns the value of a local variable instead of the
reference address. At first I though it was a gcc bug and reported it to gcc.
Maybe is miscompiled by clang.
#include <iostream>
auto func(const int a) {
const int b = a;
return [&](){ return b; };
}
int main() {
auto c = func(1);
std::cout << c() ;
return 0;
}
$ g++ -std=c++2a s.cpp
$ ./a.out
32765
$ clang++ -std=c++2a s.cpp
$ ./a.out
1
reference: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97256
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