1 files changed, 32 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/atomic/pr71675.c b/gcc/testsuite/gcc.dg/atomic/pr71675.c
new file mode 100644
index 00000000000..4a1675cf2f5
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/atomic/pr71675.c
@@ -0,0 +1,32 @@
+/* PR c++/71675 - __atomic_compare_exchange_n returns wrong type for typed enum
+ */
+/* { dg-do compile { target c11 } } */
+
+#define Test(T)								\
+  do {									\
+    static T x;								\
+    int r [_Generic (__atomic_compare_exchange_n (&x, &x, x, 0, 0, 0),	\
+		     _Bool: 1, default: -1)];				\
+    (void)&r;								\
+  } while (0)
+
+void f (void)
+{
+  /* __atomic_compare_exchange_n would fail to return _Bool when
+     its arguments were one of the three character types.  */
+  Test (char);
+  Test (signed char);
+  Test (unsigned char);
+
+  Test (int);
+  Test (unsigned int);
+
+  Test (long);
+  Test (unsigned long);
+
+  Test (long long);
+  Test (unsigned long long);
+
+  typedef enum E { e } E;
+  Test (E);
+}