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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/combine.c | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 70d0eb6..1e1f7dc 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2012-07-07 Ulrich Weigand <ulrich.weigand@linaro.org> + + * combine.c (force_to_mode) [LSHIFTRT]: Avoid undefined behaviour + due to negative shift amount. + 2012-07-07 Hans-Peter Nilsson <hp@axis.com> Fix configure test for "stack protector support in target C library". diff --git a/gcc/combine.c b/gcc/combine.c index 70b80bc..ed87f1c 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -8433,6 +8433,7 @@ force_to_mode (rtx x, enum machine_mode mode, unsigned HOST_WIDE_INT mask, in OP_MODE. */ if (CONST_INT_P (XEXP (x, 1)) + && INTVAL (XEXP (x, 1)) >= 0 && INTVAL (XEXP (x, 1)) < HOST_BITS_PER_WIDE_INT && HWI_COMPUTABLE_MODE_P (op_mode)) { |