extern bool warning_at (location_t, int, const char *, ...)
ATTRIBUTE_GCC_DIAG(3,4);
extern void error (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2);
+extern void error_at (location_t, const char *, ...) ATTRIBUTE_GCC_DIAG(2,3);
extern void fatal_error (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2)
ATTRIBUTE_NORETURN;
/* Pass one of the OPT_W* from options.h as the second parameter. */