bug on irix6.2 for egcs_1_1_branch (cvs 980830) & gcc-2.8.1

[Jan-Jaap van der Heijden]

This code snippet crashes both gcc-2.8.1 and the 980830 CVS version of the
egcs-1.1 branch on an SGI Indigo2 (R10k), running Irix 6.2:

#include <math.h>

typedef struct complexm {
  double re,im;
} complex;

static complex
setCom (double r, double i)
{
  complex ct;
  ct.re=fabs(r)<1E-300?0.0:r;
  ct.im=fabs(i)<1E-300?0.0:i;
  return ct;
}

/* This works ... */
static complex
csqrt (double x)
{
  if (x>=0)
    return setCom (sqrt(x), 0);
  else
    return setCom (0, sqrt(-x));
}

/* ... but this crashes */
/* ../../egcs/gcc/expr.c:2323: Internal compiler error in function
emit_move_insn */
static complex
csqrt_crash (double x)
{
  return (x>=0) ? setCom(sqrt(x),0) : setCom(0,sqrt(-x));
}

============================================================================
=====

This is the result of the EGCS testsuite:

FAIL: gcc.c-torture/execute/980506-2.c execution,  -O2 
FAIL: gcc.c-torture/execute/980506-2.c execution,  -O2 -g 
FAIL: gcc.c-torture/execute/980506-2.c execution,  -Os 
FAIL: gcc.c-torture/execute/980526-1.c execution,  -O2 -fomit-frame-pointer
-finline-functions 
FAIL: gcc.c-torture/execute/complex-5.c execution,  -O0 
FAIL: gcc.c-torture/execute/complex-5.c execution,  -O1 
FAIL: gcc.c-torture/execute/complex-5.c execution,  -O2 
FAIL: gcc.c-torture/execute/complex-5.c execution,  -O2
-fomit-frame-pointer -finline-functions 
FAIL: gcc.c-torture/execute/complex-5.c execution,  -O2 -g 
FAIL: gcc.c-torture/execute/complex-5.c execution,  -Os 
FAIL: gcc.dg/980626-1.c (test for excess errors)

		=== gcc Summary ===

# of expected passes		7485
# of unexpected failures	11
# of expected failures		7
# of unsupported tests		19
/usr/people/bbv/src/egcs-1.1/mips-sgi-irix6.2/gcc/xgcc version egcs-2.91.56
19980829 (egcs-1.1 19980830)

		=== g++ Summary ===

# of expected passes		4218
# of unexpected successes	2
# of expected failures		87
# of untested testcases		7
/usr/people/bbv/src/egcs-1.1/mips-sgi-irix6.2/gcc/testsuite/../xgcc version
egcs-2.91.56 19980829 (egcs-1.1 19980830)

Greetings,

JanJaap


---
Jan-Jaap van der Heijden                      Telephone: +31-53-4807060
BBV Software BV                               Fax      : +31-53-4807062
Hengelosestraat 705                           e-mail   : janjaap@bbv.nl
7521 PA, Enschede, The Netherlands            http://www.bbv-software.com