#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <string.h>

/*
 * Copy src to dst including the terminating NUL; return dst. The strings
 * must not overlap (restrict).
 *
 * The copy loop below is the canonical strcpy idiom; GCC's
 * -ftree-loop-distribute-patterns (on by default at -O2 and -O3) can rewrite
 * such loops into calls to the recognized string builtins — potentially this
 * very function — causing infinite self-recursion. Disable that one
 * transformation for this function only.
 */
__attribute__((optimize("no-tree-loop-distribute-patterns"))) char *
strcpy(char *restrict dst, const char *restrict src) // NOLINT(bugprone-*)
{
    char *d = dst;

    for (;;)
    {
        *d++ = *src;
        if (*src == '\0')
        {
            return dst;
        }
        src++;
    }
}