[Bug ada/22285] New: __gnat_is_absolute_path: Segmentation fault

[Bug ada/22285] New: __gnat_is_absolute_path: Segmentation fault

[danglin at gcc dot gnu dot org]

../../gnatmake -c -I../rts -I. -I/test/gnu/gcc-3.3/gcc/gcc/ada gnatchop --GCC=".
./../xgcc -B../../ -g -O2 -mdisable-indexing     -gnatpg -gnata"

raised STORAGE_ERROR : stack overflow or erroneous memory access
make[3]: *** [../../gnatchop] Error 1
make[3]: Leaving directory `/test/gnu/gcc-3.3/objdir/gcc/ada/tools'
make[2]: *** [gnattools-native] Error 2

# gdb ../../gnatmake
GNU gdb 6.3.50.20050210-cvs
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "hppa2.0w-hp-hpux11.11"...
(gdb) r `cat xxx.sh`
Starting program: /test/gnu/gcc-3.3/objdir/gcc/gnatmake `cat xxx.sh`

Program received signal SIGSEGV, Segmentation fault.
0x00142348 in __gnat_is_absolute_path ()
(gdb) disass 0x00142338 0x00142358
Dump of assembler code from 0x142338 to 0x142358:
0x00142338 <__gnat_file_exists+40>:     bv r0(rp)
0x0014233c <__gnat_file_exists+44>:     ldo -c0(sp),sp
0x00142340 <__gnat_is_absolute_path+0>: cmpib,= 0,r25,0x142354 <
__gnat_is_absolute_path+20>
0x00142344 <__gnat_is_absolute_path+4>: ldi 0,ret0
0x00142348 <__gnat_is_absolute_path+8>: ldb 0(,r26),ret0
0x0014234c <__gnat_is_absolute_path+12>:        cmpiclr,<> 2f,ret0,ret0
0x00142350 <__gnat_is_absolute_path+16>:        ldi 1,ret0
0x00142354 <__gnat_is_absolute_path+20>:        bv,n r0(rp)
End of assembler dump.
(gdb) p/x $r26
$1 = 0x0
(gdb) bt
#0  0x00142348 in __gnat_is_absolute_path ()
#1  0x00134720 in gnat__os_lib__is_absolute_path ()
#2  0x00112ec8 in tempdir___elabb ()
#3  0x00008a3c in adainit ()
#4  0x00008e90 in main ()

Null pointer passed from gnat__os_lib__is_absolute_path is the problem.

-- 
           Summary: __gnat_is_absolute_path: Segmentation fault
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ada
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: danglin at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: hppa2.0w-hp-hpux11.11
  GCC host triplet: hppa2.0w-hp-hpux11.11
GCC target triplet: hppa2.0w-hp-hpux11.11


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22285

[Bug ada/22285] __gnat_is_absolute_path: Segmentation fault

[charlet at gcc dot gnu dot org]

------- Additional Comments From charlet at gcc dot gnu dot org  2005-09-06 12:08 -------
Do you still see the problem ?
Note that from the code, a null pointer can never be passed to the
C routine, so it has to be a codegen problem, if still present.

Arno

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22285

[Bug ada/22285] __gnat_is_absolute_path: Segmentation fault

[dave at hiauly1 dot hia dot nrc dot ca]

------- Additional Comments From dave at hiauly1 dot hia dot nrc dot ca  2005-09-07 22:43 -------
Subject: Re:  __gnat_is_absolute_path: Segmentation fault

> Do you still see the problem ?

This is fixed.

Dave


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22285

[Bug ada/22285] __gnat_is_absolute_path: Segmentation fault

[danglin at gcc dot gnu dot org]

------- Additional Comments From danglin at gcc dot gnu dot org  2005-09-07 22:45 -------
No longer occurs.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22285