Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!MOOSE.CITA.UTORONTO.CA!trq
From: trq@MOOSE.CITA.UTORONTO.CA (Tom Quinn)
Newsgroups: gnu.gcc.bug
Subject: bug in sparc gcc 1.35
Message-ID: <8905311521.AA01861@moose.cita.utoronto.ca>
Date: 31 May 89 15:21:13 GMT
Sender: daemon@tut.cis.ohio-state.edu
Distribution: gnu
Organization: GNUs Not Usenet
Lines: 52

The following code will cause gcc to abort when compiled with the "-O
-fstrength-reduce" flags.  This is gcc version 1.35 with a fix to
optabs.c on a Sun4/110 running SunOS 4.0.

Tom Quinn                 Canadian Institute for Theoretical Astrophysics
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:
make stats.o CFLAGS="-g -v -O -fstrength-reduce"
gcc -g -v -O -fstrength-reduce   -c stats.c -o stats.o
gcc version 1.35
 /usr/local/lib/gcc-cpp -v -undef -D__GNUC__ -Dsparc -Dsun -Dunix -D__sparc__ -D__sun__ -D__unix__ -D__OPTIMIZE__ stats.c /tmp/cca13385.cpp
GNU CPP version 1.35
 /usr/local/lib/gcc-cc1 /tmp/cca13385.cpp -quiet -dumpbase stats.c -fstrength-reduce -g -O -version -o /tmp/cca13385.s
GNU C version 1.35 (sparc) compiled by GNU C version 1.35.
gcc: Program cc1 got fatal signal 6.

The code:
------------------------------------------------------------------------
typedef	unsigned int	u_int;
union word {  
	u_int size;			 
	union word *next;	 
	union word *prev;	 
	char *donothing;	 
	long foo[2] ;				 
};
typedef union word Word;
extern int _malloc_scount[];
malloc_dumpstats(fd)
int fd;
{
	int i;
	char buf[128];
	for (i = 1; i < 2*1024 ; i++) {
		if(_malloc_scount[i] > 0) {
			(void) sprintf(buf, "%d: %d\n", i * sizeof(Word),
			 _malloc_scount[i]);
			(void) write(fd, buf, strlen(buf));
			_malloc_scount[i] = 0;
		}
	}
	if (_malloc_scount[0] > 0) {
		(void) sprintf(buf, ">= %d: %d\n", 2*1024  * sizeof(Word), 
		 _malloc_scount[0]);
		(void) write(fd, buf, strlen(buf));
		_malloc_scount[0] = 0;
	}
}