https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120198
--- Comment #1 from Anthony Cozzolino <ajcozzol at us dot ibm.com> ---
Copying the code and compiler error here for convenience:
#include <mutex>
struct MutexLike
{
void lock() { }
void unlock() { }
bool try_lock() { return true; }
};
int main()
{
MutexLike m1, m2;
std::lock(m1, m2);
std::scoped_lock sl(m1, m2);
return 0;
}
<source>: In function 'int main()':
<source>:14:10: error: 'scoped_lock' is not a member of 'std'
14 | std::scoped_lock sl(m1, m2);
| ^~~~~~~~~~~
<source>:2:1: note: 'std::scoped_lock' is defined in header '<mutex>'; this is
probably fixable by adding '#include <mutex>'
1 | #include <mutex>
+++ |+#include <mutex>
2 |
Compiler returned: 1
