re PR c/53968 (integer undefined behaviors in GCC)

	PR c/53968
	* tree.c (integer_pow2p): Avoid undefined signed overflows.
	* simplify-rtx.c (neg_const_int): Likewise.
	* expr.c (fixup_args_size_notes): Likewise.
	* stor-layout.c (set_min_and_max_values_for_integral_type): Likewise.
	* double-int.c (mul_double_wide_with_sign): Likewise.
	(double_int_mask): Likewise.
	* tree-ssa-loop-ivopts.c (get_address_cost): Likewise.

From-SVN: r190342

1 files changed, 1 insertions, 1 deletions

diff --git a/gcc/expr.c b/gcc/expr.c
index 69e043d..4e7eb5fb 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -3828,7 +3828,7 @@ fixup_args_size_notes (rtx prev, rtx last, int end_args_size)
 
       add_reg_note (insn, REG_ARGS_SIZE, GEN_INT (args_size));
 #ifdef STACK_GROWS_DOWNWARD
-      this_delta = -this_delta;
+      this_delta = -(unsigned HOST_WIDE_INT) this_delta;
 #endif
       args_size -= this_delta;
     }