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[PATCH] Avoid GCC shift overflow warning


FYI,

I've committed the attatched.  GCC was still convinced that the shift
would overflow.

	Andrew
Tue Apr  4 12:13:19 2000  Andrew Cagney  <cagney@b1.cygnus.com>

	* printcmd.c (print_scalar_formatted): Use local variable ptr_bit
 	in shift.  Stop GCC thinking it has a shift overflow.

Index: printcmd.c
===================================================================
RCS file: /cvs/src/src/gdb/printcmd.c,v
retrieving revision 1.2
diff -p -r1.2 printcmd.c
*** printcmd.c	2000/03/22 20:55:15	1.2
--- printcmd.c	2000/04/04 04:11:46
*************** print_scalar_formatted (valaddr, type, f
*** 445,454 ****
      case 'a':
        {
  	/* Truncate address to the size of a target pointer, avoiding
! 	   shifts larger or equal than the width of a CORE_ADDR.  */
  	CORE_ADDR addr = unpack_pointer (type, valaddr);
! 	if (TARGET_PTR_BIT < (sizeof (CORE_ADDR) * HOST_CHAR_BIT))
! 	  addr &= ((CORE_ADDR) 1 << TARGET_PTR_BIT) - 1;
  	print_address (addr, stream);
        }
        break;
--- 445,457 ----
      case 'a':
        {
  	/* Truncate address to the size of a target pointer, avoiding
! 	   shifts larger or equal than the width of a CORE_ADDR.  The
! 	   local variable PTR_BIT stops the compiler reporting a shift
! 	   overflow when it won't occure. */
  	CORE_ADDR addr = unpack_pointer (type, valaddr);
! 	int ptr_bit = TARGET_PTR_BIT;
! 	if (ptr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT))
! 	  addr &= ((CORE_ADDR) 1 << ptr_bit) - 1;
  	print_address (addr, stream);
        }
        break;

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