[Octave-bug-tracker] [bug #50234] c++ file_stat with non existant crashes octave in windows

[John Donoghue]

URL:
  <http://savannah.gnu.org/bugs/?50234>

                 Summary: c++ file_stat with non existant crashes octave in
windows
                 Project: GNU Octave
            Submitted by: lostbard
            Submitted on: Mon 06 Feb 2017 01:45:10 AM GMT
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Segfault, Bus Error, etc.
                  Status: None
             Assigned to: None
         Originator Name: JohnD
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.2.0
        Operating System: Microsoft Windows

    _______________________________________________________

Details:

Using a oct file created  in windows 7, octave 4.2.0 (tried both w64 and w32)
versions

I get a consistent hard crash of octave running the function:


#include <octave/oct.h>
#include <octave/defun-dld.h>
#include <octave/file-stat.h>

DEFUN_DLD(nofile,args,nargout,"no docs")
{
  bool ok = file_stat ("wedonthavefile").exists();
  return octave_value(ok);
}


oct file built as mkoctfile notest.cpp

Run in octave as notest.

STacktrace without any debug symbols compiled in is:


Thread 19 received signal SIGSEGV, Segmentation fault.
[Switching to Thread 10192.0x3318]
0x6c365571 in
liboctinterp-4!_ZNSt8_Rb_treeIiSt4pairIKi12octave_valueESt10_Select1stIS3_ESt4lessIiESaIS3_EE4findERS1_
()
   from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
(gdb) where
#0  0x6c365571 in
liboctinterp-4!_ZNSt8_Rb_treeIiSt4pairIKi12octave_valueESt10_Select1stIS3_ESt4lessIiESaIS3_EE4findERS1_
()
   from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#1  0x6bca8996 in liboctinterp-4!_ZN20octave_user_functionD2Ev () from
C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#2  0x6bca8beb in liboctinterp-4!_ZN20octave_user_functionD0Ev () from
C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#3  0x6c365600 in
liboctinterp-4!_ZNSt8_Rb_treeIiSt4pairIKi12octave_valueESt10_Select1stIS3_ESt4lessIiESaIS3_EE8_M_eraseEPSt13_Rb_tree_nodeIS3_E
() from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#4  0x6c3655dd in
liboctinterp-4!_ZNSt8_Rb_treeIiSt4pairIKi12octave_valueESt10_Select1stIS3_ESt4lessIiESaIS3_EE8_M_eraseEPSt13_Rb_tree_nodeIS3_E
() from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#5  0x6c3655dd in
liboctinterp-4!_ZNSt8_Rb_treeIiSt4pairIKi12octave_valueESt10_Select1stIS3_ESt4lessIiESaIS3_EE8_M_eraseEPSt13_Rb_tree_nodeIS3_E
() from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#6  0x6c35ef7a in
liboctinterp-4!_ZNSt8_Rb_treeISsSt4pairIKSsN12symbol_table8fcn_infoEESt10_Select1stIS4_ESt4lessISsESaIS4_EE8_M_eraseEPSt13_Rb_tree_nodeIS4_E
() from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#7  0x6c35eecf in
liboctinterp-4!_ZNSt8_Rb_treeISsSt4pairIKSsN12symbol_table8fcn_infoEESt10_Select1stIS4_ESt4lessISsESaIS4_EE8_M_eraseEPSt13_Rb_tree_nodeIS4_E
() from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#8  0x6c35eecf in
liboctinterp-4!_ZNSt8_Rb_treeISsSt4pairIKSsN12symbol_table8fcn_infoEESt10_Select1stIS4_ESt4lessISsESaIS4_EE8_M_eraseEPSt13_Rb_tree_nodeIS4_E
() from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#9  0x6c35eecf in
liboctinterp-4!_ZNSt8_Rb_treeISsSt4pairIKSsN12symbol_table8fcn_infoEESt10_Select1stIS4_ESt4lessISsESaIS4_EE8_M_eraseEPSt13_Rb_tree_nodeIS4_E
() from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#10 0x6c35eecf in
liboctinterp-4!_ZNSt8_Rb_treeISsSt4pairIKSsN12symbol_table8fcn_infoEESt10_Select1stIS4_ESt4lessISsESaIS4_EE8_M_eraseEPSt13_Rb_tree_nodeIS4_E
() from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#11 0x6c35eecf in
liboctinterp-4!_ZNSt8_Rb_treeISsSt4pairIKSsN12symbol_table8fcn_infoEESt10_Select1stIS4_ESt4lessISsESaIS4_EE8_M_eraseEPSt13_Rb_tree_nodeIS4_E
() from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#12 0x6c35eecf in
liboctinterp-4!_ZNSt8_Rb_treeISsSt4pairIKSsN12symbol_table8fcn_infoEESt10_Select1stIS4_ESt4lessISsESaIS4_EE8_M_eraseEPSt13_Rb_tree_nodeIS4_E
() from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#13 0x6c1068a5 in
liboctinterp-4!_ZN12symbol_table8fcn_info12fcn_info_rep36mark_subfunction_in_scope_as_privateEiRKSs
()
   from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#14 0x6b8811b4 in ?? () from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#15 0x6b881325 in ?? () from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#16 0x6b881433 in ?? () from C:\Octave\Octave-4.2.0\bin\liboctinterp-4.dll
#17 0x77d06b8e in ntdll!RtlDecompressBuffer () from
C:\WINDOWS\SYSTEM32\ntdll.dll
#18 0x77cd5ade in ntdll!RtlAnsiCharToUnicodeChar () from
C:\WINDOWS\SYSTEM32\ntdll.dll
#19 0x77ce7efc in ntdll!LdrShutdownProcess () from
C:\WINDOWS\SYSTEM32\ntdll.dll
#20 0x00000000 in ?? ()






    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?50234>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/