bug in sparc gcc 1.28

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2 total messages Started by Tom Quinn Wed, 28 Sep 1988 12:32

#1723

Author: Tom Quinn
Date: Wed, 28 Sep 1988 12:32

39 lines
1716 bytes

The following code causes gcc to get a fatal signal.  This is gcc
version 1.28 on a sun4/110 running SunOs 4.0.

Tom Quinn                 Canadian Institute for Theoretical Astrophysics
trq@moose.cita.toronto.edu
SOON TO BE trq@moose.cita.utoronto.ca
UUCP   - decvax!utgpu!moose!trq
BITNET - quinn@utorphys.bitnet
ARPA   - trq%moose.cita.toronto.edu@relay.cs.net

The compile:
gcc -g -v -O  -sun4 -c  interface.c
gcc version 1.28
 /usr/local/lib/gcc-cpp -v -undef -D__GNU__ -D__GNUC__ -Dsparc -Dsun -Dunix -D__OPTIMIZE__ interface.c /tmp/cca03994.cpp
GNU CPP version 1.28
 /usr/local/lib/gcc-cc1 /tmp/cca03994.cpp -quiet -dumpbase interface.c -g -O -version -o /tmp/cca03994.s
GNU C version 1.28 (sparc) compiled by GNU C version 1.28.
gcc: Program cc1 got fatal signal 6.

The code:
------------------------------------------------------------------------
defimage_		(arr,x1,x2,y1,y2,nx,ny)
float *arr,
      *x1,*x2,*y1,*y2;
int *nx,*ny;
{
   char *malloc();
   static float **z = 0 ;			 
   int i;
   if((z = (float **)malloc((unsigned)(*ny)*sizeof(float *))) == 0 ) {
      msg("Can't get storage in defimage\n");
      z = 0 ;
      return;
   }
   for(i = 0;i < *ny;i++) {
      z[i] = &arr[i*(*nx)];
   }
   defimage(z,*x1,*x2,*y1,*y2,*nx,*ny);
}

Re: bug in sparc gcc 1.28

#1731

Author: Dean Long
Date: Fri, 30 Sep 1988 21:58

45 lines
1646 bytes

In article <8809281232.AA02342@moose.cita.toronto.edu> trq@moose.cita.toronto.edu (Tom Quinn) writes:
>The following code causes gcc to get a fatal signal.  This is gcc
>version 1.28 on a sun4/110 running SunOs 4.0.

.
.
.

>------------------------------------------------------------------------
>defimage_		(arr,x1,x2,y1,y2,nx,ny)
>float *arr,
>      *x1,*x2,*y1,*y2;
>int *nx,*ny;
>{
>   char *malloc();
>   static float **z = 0 ;			 

.
.
.

>   defimage(z,*x1,*x2,*y1,*y2,*nx,*ny);
>}

I tried this program.  Changing the float to double makes it work.  Also,
the same for this smaller version:

crash()
{
   float *x;

   foo(1,*x,*x,*x);
}

The strange thing is that small changes to the parameters, or changing
float to double makes it work.  I was using dbx and found that
a REG with SImode was using regno 34, which I think causes some
constraint to fail.

Also, when using dbx on cc1 compiled with gcc, register variable
values are printed incorrectly.  cc1 compiled with Sun cc is OK.

Dean Long
University of California, San Diego
dlong@beowulf.ucsd.edu

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