* c-common.c (pointer_int_sum): Do the negation in sizetype.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@126108 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 7 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/pointer-arith-9.c b/gcc/testsuite/gcc.dg/pointer-arith-9.c
new file mode 100644
index 00000000000..2d261127200
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pointer-arith-9.c
@@ -0,0 +1,7 @@
+/* { dg-do compile } */
+/* { dg-options "" } */
+
+void *foo(void)
+{
+  return (void *)0 - 1;
+}