1 // run 2 3 // Copyright 2009 The Go Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style 5 // license that can be found in the LICENSE file. 6 7 package main 8 9 type S struct { 10 } 11 12 func (p *S) M() { 13 } 14 15 type I interface { 16 M(); 17 } 18 19 func main() { 20 var p *S = nil; 21 var i I = p; // this should be possible even though p is nil: we still know the type 22 i.M(); // should be possible since we know the type, and don't ever use the receiver 23 } 24 25 26 /* 27 throw: ifaces2i: nil pointer 28 SIGSEGV: segmentation violation 29 Faulting address: 0x0 30 pc: 0x1b7d 31 32 0x1b7d?zi 33 throw(30409, 0, 0, ...) 34 throw(0x76c9, 0x0, 0x0, ...) 35 0x207f?zi 36 sysifaces2i(31440, 0, 31480, ...) 37 sysifaces2i(0x7ad0, 0x7af8, 0x0, ...) 38 0x136f?zi 39 mainmain(1, 0, 1606416424, ...) 40 mainmain(0x1, 0x7fff5fbff828, 0x0, ...) 41 42 rax 0x1 43 rbx 0x1 44 rcx 0x33b5 45 rdx 0x0 46 rdi 0x1 47 rsi 0x7684 48 rbp 0x7684 49 rsp 0xafb8 50 r8 0x0 51 r9 0x0 52 r10 0x1002 53 r11 0x206 54 r12 0x0 55 r13 0x0 56 r14 0x7c48 57 r15 0xa000 58 rip 0x1b7d 59 rflags 0x10202 60 cs 0x27 61 fs 0x10 62 gs 0x48 63 */ 64
