summaryrefslogtreecommitdiff
path: root/gcc/testsuite/gcc.dg/pr36227.c
diff options
context:
space:
mode:
Diffstat (limited to 'gcc/testsuite/gcc.dg/pr36227.c')
-rw-r--r--gcc/testsuite/gcc.dg/pr36227.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr36227.c b/gcc/testsuite/gcc.dg/pr36227.c
new file mode 100644
index 000000000..27fe00155
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr36227.c
@@ -0,0 +1,22 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -Wstrict-overflow=3" } */
+#if (__SIZEOF_LONG_LONG__ == __SIZEOF_POINTER__)
+typedef unsigned long long ptrcast;
+#elif (__SIZEOF_LONG__ == __SIZEOF_POINTER__)
+typedef unsigned long ptrcast;
+#elif (__SIZEOF_INT__ == __SIZEOF_POINTER__)
+typedef unsigned int ptrcast;
+#else
+#error Add target support here
+#endif
+
+volatile unsigned long *
+sat_add(volatile unsigned long *ptr, unsigned long i, volatile unsigned long *end)
+{
+ if ((ptrcast)ptr + i * sizeof(*ptr) > (ptrcast)ptr) /* { dg-bogus "pointer wraparound" } */
+ return ptr + i;
+ else
+ return end;
+}
+
+