[Bug target/34062] New: [4.3 Regression] MIPS n32 fails gcc.c-torture/execute/nestfunc-6.c

[Bug target/34062] New: [4.3 Regression] MIPS n32 fails gcc.c-torture/execute/nestfunc-6.c

[daney at gcc dot gnu dot org]

On the trunk r129918 configured:

../trunk/configure --with-arch=r5000 --disable-java-awt --without-x
--enable-__cxa_atexit --disable-jvmpi --disable-libgomp --disable-static
--enable-languages=c,c++,java --disable-fixed-point --enable-checking=release
--with-gmp=/home/daney/mp --with-mpfr=/home/daney/mp

With glibc-2.6.1

I am getting (with n32 ABI):
FAIL: gcc.c-torture/execute/nestfunc-6.c execution,  -O2
FAIL: gcc.c-torture/execute/nestfunc-6.c execution,  -O3 -fomit-frame-pointer
FAIL: gcc.c-torture/execute/nestfunc-6.c execution,  -O3 -g
FAIL: gcc.c-torture/execute/nestfunc-6.c execution,  -Os

All these cases are failing with SIGSEGV

It seems that they used to work:
http://gcc.gnu.org/ml/gcc-testresults/2006-02/msg00660.html


-- 
           Summary: [4.3 Regression] MIPS n32 fails gcc.c-
                    torture/execute/nestfunc-6.c
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: daney at gcc dot gnu dot org
 GCC build triplet: mips64-unknown-linux-gnu
  GCC host triplet: mips64-unknown-linux-gnu
GCC target triplet: mips64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34062

[Bug target/34062] [4.3 Regression] MIPS n32 fails gcc.c-torture/execute/nestfunc-6.c

[daney at gcc dot gnu dot org]

-- 

daney at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |4.3.0
   Target Milestone|---                         |4.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34062

[Bug target/34062] [4.3 Regression] MIPS n32 fails gcc.c-torture/execute/nestfunc-6.c

[daney at gcc dot gnu dot org]

------- Comment #1 from daney at gcc dot gnu dot org  2007-11-11 06:29 -------
The problem is that $gp is clobbered at the nonlocal_goto_receiver but it is
not being restored.

Currently the nonlocal_goto_receiver has a condition of
TARGET_CALL_CLOBBERED_GP, but this is not correct.  I think it should be
unconditional.

In:

http://gcc.gnu.org/viewcvs?view=rev&revision=125941

I renamed this from exception_receiver. I wonder if the exception_receiver
really should be conditional on TARGET_CALL_CLOBBERED_GP in which case there
should be both an exception_receiver and nonlocal_goto_receiver.  It would seem
so as the unwinder should restore $gp making it redundant in the
exception_receiver.

Hmm.  This is really the same as bug 32406  I will mark it as a duplicate and
reopen 32406

*** This bug has been marked as a duplicate of 32406 ***


-- 

daney at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34062