Bug 126053

Description of problem:
gcc crashes with the following message:
gcc  -g -O2 -c eval.c -o eval.o
eval.c: In function `conv_literal':
eval.c:52: Internal compiler error in subst_stack_regs_pat, at reg-
stack.c:1414
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Version-Release number of selected component (if applicable):
gcc version 2.96 20000731 (Red Hat Linux 7.3 2.96-112_MSDW_2)

How reproducible:
Always. 

I am reproducing the code fragment that led to this. There is a parse 
error here, but gcc crashes instead.

typedef struct _Lit {
  double *col;		/* pointer to column */
  char col_name;	/* name of the column */
  int  offset;		/* row denoting offset of column */
} Lit;

/* access macros */
#define LIT_COL(e)	((e)->col)
#define LIT_NAME(e)	((e)->col_name)
#define LIT_OFF(e)	((e)->offset)

static inline int compute_row (int curr_row, int offset) {
  return curr_row + offset - START_ROW;
}

double conv_literal (int row, Lit *literal) 
{
  double val;

#if 0
  printf ("row %d\n", row);
#endif

  val = (LIT_COL(literal))[compute_row(row, LIT_OFF(literal))];

#if 1
  printf ("%c%d (%d) = %f\n", LIT_NAME (literal), LIT_OFF(literal), 
	  compute_row (row, LIT_OFF(literal)) + 2, val);
  }
#endif

  return (val);
}

Steps to Reproduce:
1. gcc  -g -O2 -c eval.c -o eval.o
produces the error, where eval.c contains the code fragment.
  
Actual results:


Expected results:


Additional info: