1 #include <u.h> 2 #include <libc.h> 3 4 /* 5 * On gcc and clang, getcallerpc is a macro invoking a compiler builtin. 6 * If the macro in libc.h did not trigger, there's no implementation. 7 */ 8 #undef getcallerpc 9 ulong 10 getcallerpc(void *v) 11 { 12 return 1; 13 }