1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/compile/pr42703.c b/gcc/testsuite/gcc.c-torture/compile/pr42703.c
new file mode 100644
index 000000000..4805b17b0
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr42703.c
@@ -0,0 +1,12 @@
+__extension__ typedef unsigned long long int uint64_t;
+typedef uint64_t ScmUInt64;
+void swapb64(ScmUInt64 *loc) 
+{
+    union {
+        ScmUInt64 l;
+        unsigned char c[4];
+    } dd;
+    unsigned char t;
+    dd.l = *loc;
+    (t = dd.c[3], dd.c[3] = dd.c[4], dd.c[4] = t);
+}