+2006-01-23 Paolo Bonzini <bonzini@gnu.org>
+
+ PR rtl-optimization/25890
+ PR rtl-optimization/25905
+ * combine.c (expand_compound_operation, expand_field_assignment):
+ Fail if the bitfield's final position is out of bounds.
+
2006-01-24 Ian Lance Taylor <ian@airs.com>
PR middle-end/25930
len = INTVAL (XEXP (x, 1));
pos = INTVAL (XEXP (x, 2));
- /* This should stay within the object being extracted, fail. */
- gcc_assert (len + pos <= GET_MODE_BITSIZE (GET_MODE (XEXP (x, 0))));
+ /* This should stay within the object being extracted, fail otherwise. */
+ if (len + pos > GET_MODE_BITSIZE (GET_MODE (XEXP (x, 0))))
+ return x;
if (BITS_BIG_ENDIAN)
pos = GET_MODE_BITSIZE (GET_MODE (XEXP (x, 0))) - len - pos;
pos = XEXP (SET_DEST (x), 2);
/* A constant position should stay within the width of INNER. */
- if (GET_CODE (pos) == CONST_INT)
- gcc_assert (INTVAL (pos) + len
- <= GET_MODE_BITSIZE (GET_MODE (inner)));
+ if (GET_CODE (pos) == CONST_INT
+ && INTVAL (pos) + len > GET_MODE_BITSIZE (GET_MODE (inner)))
+ break;
if (BITS_BIG_ENDIAN)
{