crash: longjmp vs -fprofile-arcs

crash: longjmp vs -fprofile-arcs

[Dale Johannesen]

#include <setjmp.h>
int foo (jmp_buf buf) { longjmp(buf, 1); }

now what? cc -fprofile-arcs lj.c
lj.c: In function `foo':
lj.c:2: internal error: Bus error
Please submit a full bug report, blah blah

It seems the block that calls longjmp has no successors, and the code 
in profile.c
is not expecting that.  I'm not sure what the right thing is, could 
somebody look?

Re: crash: longjmp vs -fprofile-arcs

[Andrew Pinski]

Here is the crash log for GNU C version 3.3 20021126 (experimental) 
(powerpc-apple-darwin6.2) (fsf-version):

Date/Time:  2002-12-06 19:04:18 -0800
OS Version: 10.2.2 (Build 6F21)
Host:       il0503d-dhcp84.apple.com

Command:    cc1
PID:        19935

Exception:  EXC_BAD_ACCESS (0x0001)
Codes:      KERN_PROTECTION_FAILURE (0x0002) at 0x00000018

Thread 0 Crashed:
  #0   0x00218e4c in insert_insn_on_edge (cfgrtl.c:1300)
  #1   0x002b32b4 in flow_call_edges_add (cfganal.c:326)
  #2   0x00136ecc in branch_prob (profile.c:793)
  #3   0x00099d28 in rest_of_compilation (toplev.c:3002)
  #4   0x00022d98 in c_expand_body (c-decl.c:6528)
  #5   0x00022928 in finish_function (c-decl.c:6401)
  #6   0x00002fc0 in yyparse (c-parse.c:404)
  #7   0x00010b68 in c_common_parse_file (c-lex.c:160)
  #8   0x00098d40 in compile_file (toplev.c:2130)
  #9   0x0009e280 in do_compile (toplev.c:5355)
  #10  0x0009e34c in toplev_main (toplev.c:5385)
  #11  0x00001cb8 in _start (crt.c:267)
  #12  0x00001b38 in start

PPC Thread State:
   srr0: 0x00218e4c srr1: 0x0000d930                vrsave: 0x00000000
    xer: 0x00000000   lr: 0x00218e3c  ctr: 0x90074080   mq: 0x00000000
     r0: 0x002b32b4   r1: 0xbffff180   r2: 0x00374320   r3: 0x00dc6dc0
     r4: 0x00000000   r5: 0x00000000   r6: 0x00000048   r7: 0x00000018
     r8: 0x00000047   r9: 0x00000008  r10: 0xafafafaf  r11: 0x0038f12c
    r12: 0x28002222  r13: 0x00349318  r14: 0x00366e48  r15: 0x00376e48
    r16: 0x0034f70c  r17: 0x00376e48  r18: 0x00967422  r19: 0x00349318
    r20: 0x00379318  r21: 0x00349318  r22: 0x00000000  r23: 0x00000001
    r24: 0x00000000  r25: 0x003731ac  r26: 0x00000000  r27: 0x00dae360
    r28: 0x003731ac  r29: 0x00dc6dc0  r30: 0x00000000  r31: 0x00218e3c




On Friday, Dec 6, 2002, at 18:22 US/Pacific, Dale Johannesen wrote:

> #include <setjmp.h>
> int foo (jmp_buf buf) { longjmp(buf, 1); }
>
> now what? cc -fprofile-arcs lj.c
> lj.c: In function `foo':
> lj.c:2: internal error: Bus error
> Please submit a full bug report, blah blah
>
> It seems the block that calls longjmp has no successors, and the code 
> in profile.c
> is not expecting that.  I'm not sure what the right thing is, could 
> somebody look?
>
>