https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60702
Kan Wang <tinrow at gmail dot com> changed:
What |Removed |Added
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CC| |tinrow at gmail dot com
--- Comment #5 from Kan Wang <tinrow at gmail dot com> ---
+1 for this. If class member has thread-local storage and is first accessed
through member access operator (e.g. a.foo), it is not initialized as expected.
The short code snippet below reproduces the bug on g++ 4.8 - 7.1
#include <iostream>
int init() {
std::cout << "init" << std::endl;
return 0;
}
struct A {
static thread_local int foo;
};
thread_local int A::foo { init() };
int main() {
A a;
int i = a.foo;
std::cout << "--- should be initialized above ---" << std::endl;
i = A::foo;
return i;
}
Output:
--- should be initialized above ---
init
