Re: fortran/6108: sparc-sun-solaris2.7 gcc-3.1 extra g77 testsuite failures w/-fpic|-fPIC

Re: fortran/6108: sparc-sun-solaris2.7 gcc-3.1 extra g77 testsuite failures w/-fpic|-fPIC

[ghazi]

Synopsis: sparc-sun-solaris2.7 gcc-3.1 extra g77 testsuite failures w/-fpic|-fPIC

State-Changed-From-To: open->closed
State-Changed-By: ghazi
State-Changed-When: Tue Apr  2 09:58:34 2002
State-Changed-Why:
    fixed by 
    http://gcc.gnu.org/ml/gcc-patches/2002-03/msg02051.html

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6108

fortran/6108: sparc-sun-solaris2.7 gcc-3.1 extra g77 testsuite failures w/-fpic|-fPIC

[ghazi]

>Number:         6108
>Category:       fortran
>Synopsis:       sparc-sun-solaris2.7 gcc-3.1 extra g77 testsuite failures w/-fpic|-fPIC
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          wrong-code
>Submitter-Id:   net
>Arrival-Date:   Sat Mar 30 07:36:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Kaveh Ghazi
>Release:        gcc version 3.1 20020328 (prerelease)
>Organization:
>Environment:
sparc-sun-solaris2.7 native as/ld
>Description:
These are all excess failures exposed by adding -fpic|-fPIC:

Running target unix/-fPIC
FAIL: g77.dg/bprob/bprob-1.f execution,    -g  -fprofile-arcs
FAIL: g77.dg/bprob/bprob-1.f execution,    -O0  -fprofile-arcs
FAIL: g77.dg/bprob/bprob-1.f execution,    -O1  -fprofile-arcs
FAIL: g77.dg/bprob/bprob-1.f execution,    -O2  -fprofile-arcs
FAIL: g77.dg/bprob/bprob-1.f execution,    -O3  -fprofile-arcs
FAIL: g77.dg/bprob/bprob-1.f execution,    -O3 -g  -fprofile-arcs
FAIL: g77.dg/bprob/bprob-1.f execution,    -Os  -fprofile-arcs

I compiled and ran bprob-1 with -O0 -fPIC (actually the exact command line from the g77.log file) and naturally it says:
 > f771: warning: -fPIC and profiling conflict: disabling -fPIC
which makes the difference with the non-pic testrun all the more puzzling.

I get a SEGV, running under gdb I see:

Program received signal SIGSEGV, Segmentation fault.
__bb_init_func (blocks=0x13c) at ../../egcc-3.1-CVS20020328/gcc/libgcc2.c:1463
1463      if (blocks->zero_word)
(gdb) bt
#0  __bb_init_func (blocks=0x13c)
    at ../../egcc-3.1-CVS20020328/gcc/libgcc2.c:1463
#1  0x137e8 in _GLOBAL__I_MAIN__GCOV ()
    at /teal/caip5/ghazi/gcc-testing/branch/egcc-3.1-CVS20020328/gcc/testsuite/g77.dg/bprob/bprob-1.f:330
#2  0x14144 in __do_global_ctors_aux ()
#3  0x1417c in _init ()
(gdb) list
1458    __bb_init_func (struct bb *blocks)
1459    {
1460      /* User is supposed to check whether the first word is non-0,
1461         but just in case....  */
1462
1463      if (blocks->zero_word)
1464        return;
1465
1466      /* Initialize destructor.  */
1467      if (!bb_head)
(gdb) p blocks
$1 = (struct bb *) 0x13c
(gdb) p blocks->zero_word
Cannot access memory at address 0x13c.
>How-To-Repeat:
bootstrap on solaris2.7 and run the testsuite with -fPIC or -fpic
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: