diff options
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 9ca5eff..d63411e 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -3985,9 +3985,9 @@ make_range (tree exp, int *pin_p, tree *plow, tree *phigh, n_high = range_binop (MINUS_EXPR, exp_type, build_int_cst (exp_type, 0), 0, low, 0); - low = n_low, high = n_high; - exp = arg0; - continue; + if (n_high != 0 && TREE_OVERFLOW (n_high)) + break; + goto normalize; case BIT_NOT_EXPR: /* ~ X -> -X - 1 */ @@ -4021,6 +4021,7 @@ make_range (tree exp, int *pin_p, tree *plow, tree *phigh, if (TYPE_OVERFLOW_UNDEFINED (arg0_type)) *strict_overflow_p = true; + normalize: /* Check for an unsigned range which has wrapped around the maximum value thus making n_high < n_low, and normalize it. */ if (n_low && n_high && tree_int_cst_lt (n_high, n_low)) |