build fails at sys.ji

[vtjnash]

sys.ji image build segfaults before finishing (linux & mac)

currently at commit c2104c9

[JeffBezanson]

Try make cleanall?

[yarkun]

same here on os x (10.7.3, xcode 4.2.1, commit c2104c9):

$ make cleanall
$ make
...deleted output...
sys.ji
/bin/sh: line 1: 2142 Segmentation fault: 11 ./julia test -f sys.ji && echo stage1.jl || echo -J sys0.ji stage1.jl
make[1]: *** [sys.ji] Error 139
make: *** [release] Error 2

[ViralBShah]

I don't get a segfault on os x (10.7.3, xcode 4.2.1, commit 443afbf). This commit does not have any material changes from the ones mentioned above.

[egonelbre]

Got the segfault as well... (VBox VM, with Mint 12 LXDE, Linux 3.0.0.-16, i386)

After bisecting, the first bad commit is 55dce00. After adding path "jl/" back to the beginning of start_image.jl it started working again.

[egonelbre]

Here's the backtrace for it:

Program received signal SIGSEGV, Segmentation fault.
0x002d0a95 in siglongjmp () from /lib/i386-linux-gnu/libc.so.6
(gdb) backtrace
#0  0x002d0a95 in siglongjmp () from /lib/i386-linux-gnu/libc.so.6
#1  0x00162433 in siglongjmp () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x080ac449 in jl_raise (e=0xd015fe0) at task.c:489
#3  0x0807034f in jl_error (
    str=0x4a1240 "in _start: stdout_stream not defined") at builtins.c:28
#4  0x00421b46 in _start ()
#5  0x080701b6 in jl_apply (f=0x8c68148, args=0x0, nargs=0) at julia.h:780
#6  0x080732d1 in jl_trampoline (F=0x8c68148, args=0x0, nargs=0)
    at builtins.c:895
#7  0x0806a448 in jl_apply (f=0x8c68148, args=0x0, nargs=0) at julia.h:780
#8  0x0806d0d3 in jl_apply_generic (F=0x8c67f08, args=0x0, nargs=0)
    at gf.c:1185
#9  0x080600c6 in jl_apply ()
#10 0x080607ee in true_main ()
#11 0x080ab5cf in julia_trampoline (argc=1, argv=0xbffff8d8, 
    pmain=0x80606b3 <true_main>) at init.c:203
#12 0x080609cd in main ()

[JeffBezanson]

This means it is not finding start_image.jl, probably because the set_cwd around builtins.c:425 is not working. Can you try to see what's happening there?

[vtjnash]

The backtrace on mac is different?

(lldb) run -J sys0.ji stage1.jl Process 21956 launched: '/Users/jameson/Documents/no-backup/julia/julia' (x86_64)
julia(21956,0x7fff78c2e960) malloc: *** erjulia(21956,0x7fff78c2e960) malloc: *** error for object 0x10086b9c0: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
Process 21956 stopped

• thread efficient sets using hash tables #1: tid = 0x1f03, 0x00007fff8dd08ce2 libsystem_kernel.dylib__pthread_kill + 10, stop reason = signal SIGABRT frame #0: 0x00007fff8dd08ce2 libsystem_kernel.dylib__pthread_kill + 10
  libsystem_kernel.dylib`__pthread_kill + 10:
  -> 0x7fff8dd08ce2: jae 0x16ce9
  0x7fff8dd08ce4: jmpq 4883
  0x7fff8dd08ce9: ret
  0x7fff8dd08cea: nop
  (lldb) bt
• thread efficient sets using hash tables #1: tid = 0x1f03, 0x00007fff8dd08ce2 libsystem_kernel.dylib__pthread_kill + 10, stop reason = signal SIGABRT frame #0: 0x00007fff8dd08ce2 libsystem_kernel.dylib__pthread_kill + 10
  frame efficient sets using hash tables #1: 0x00007fff8960f7d2 libsystem_c.dylibpthread_kill + 95 frame #2: 0x00007fff89600a7a libsystem_c.dylibabort + 143
  frame systematic, efficient approach to string construction #3: 0x00007fff8965f84c libsystem_c.dylibfree + 389 frame #4: 0x000000010068b5b5 juliajulia_free + 37 at ios.c:54
  frame abstract multiple inheritance #5: 0x000000010068d4e9 juliaios_close + 185 at ios.c:629 frame #6: 0x000000010007c973 juliajl_save_system_image + 1091 at dump.c:780
  frame load path #7: 0x000000010b0518b5
  frame systematic test suite #8: 0x0000000100018c94 juliajl_apply + 52 at julia.h:780 frame #9: 0x000000010001ba84 juliajl_trampoline + 404 at builtins.c:895
  frame throw error if a bare string literal is invalid UTF-8 #10: 0x0000000100018c94 juliajl_apply + 52 at julia.h:780 frame #11: 0x0000000100019720 juliajl_toplevel_eval_flex + 912 at builtins.c:398
  frame remove unicode/; make test_utf8.j generate data on the fly #12: 0x0000000100018fdc juliajl_eval_module_expr + 812 at builtins.c:264 frame #13: 0x0000000100019446 juliajl_toplevel_eval_flex + 182 at builtins.c:349
  frame Use asm functions in fdlibm #14: 0x0000000100019a2a juliajl_load_file_expr + 570 at builtins.c:446 frame #15: 0x0000000100019ead juliajl_load + 189 at builtins.c:502
  frame open(file) creates file #16: 0x0000000100019f00 juliajl_load_ + 32 at builtins.c:509 frame #17: 0x00000001036095a3 frame #18: 0x0000000100018c94 juliajl_apply + 52 at julia.h:780
  frame Starting julia from anywhere except julia_home crashes #19: 0x000000010001ba84 juliajl_trampoline + 404 at builtins.c:895 frame #20: 0x0000000100010c44 juliajl_apply + 52 at julia.h:780
  frame Simplify concatenation syntax by disallowing use of , and ; simultaneously #21: 0x0000000100013730 juliajl_apply_generic + 544 at gf.c:1185 frame #22: 0x000000010360412d frame #23: 0x0000000100018c94 juliajl_apply + 52 at julia.h:780
  frame use faster BLAS by default #24: 0x000000010001ba84 juliajl_trampoline + 404 at builtins.c:895 frame #25: 0x0000000100010c44 juliajl_apply + 52 at julia.h:780
  frame trap ctrl-C in the repl #26: 0x0000000100013730 juliajl_apply_generic + 544 at gf.c:1185 frame #27: 0x00000001035e8f83 frame #28: 0x0000000100018c94 juliajl_apply + 52 at julia.h:780
  frame Need better array printing - especially for complex arrays #29: 0x000000010001ba84 juliajl_trampoline + 404 at builtins.c:895 frame #30: 0x0000000100010c44 juliajl_apply + 52 at julia.h:780
  frame Provide a way to load system BLAS #31: 0x0000000100013730 juliajl_apply_generic + 544 at gf.c:1185 frame #32: 0x0000000100001fb4 juliajl_apply + 52
  frame stack traces do not work on OS X #33: 0x0000000100002149 juliatrue_main + 377 frame #34: 0x00000001000755ca juliajulia_trampoline + 122 at init.c:203
  frame make return with no value return Nothing #35: 0x000000010000238d juliamain + 109 frame #36: 0x0000000100001734 juliastart + 52
  (lldb)

[vtjnash]

newcwd has too many characters at the end since (presumably) strncpy doesn't add a null byte.

(lldb) s
Process 21976 stopped

• thread efficient sets using hash tables #1: tid = 0x1f03, 0x000000010068efff juliaset_cwd + 31 at dirpath.c:45, stop reason = step in frame #0: 0x000000010068efff juliaset_cwd + 31 at dirpath.c:45
  42 {
  43 #ifndef WIN32
  44 if (chdir(buf) == -1)
  -> 45 return 1;
  46 #else
  47 if (SetCurrentDirectory(buf) == 0)
  48 return 1;
  (lldb) print errno
  (void *const) $5 = 0x0000000000000000
  (lldb) print EACCES
  error: use of undeclared identifier 'EACCES'
  error: 1 errors parsing expression
  (lldb) print buf
  (char *) $6 = 0x00007fff5fbfd3b8 "/Users/jameson/Documents/no-backup/julia/jl/\x01"
  (lldb)