https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113398
Bug ID: 113398
Summary: <string> no longer usable with -ffreestanding
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
Target Milestone: ---
This used to work with GCC 12 when compiled with -ffreestanding
#include <string>
// Defined by the user.
void* operator new(std::size_t n);
void operator delete(void*, std::size_t n);
int main()
{
std::string s = "a string that needs to allocate from the heap";
return s.size();
}
Since GCC 13 the -ffreestanding option also selects a freestanding libstdc++,
which doesn't allow std::string to be used.
The change was done intentionally, to provide a more clearly defined and
documented freestanding library, but it removes functionality that was being
used.
