1 files changed, 32 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/parse/expr3.C b/gcc/testsuite/g++.dg/parse/expr3.C
new file mode 100644
index 000000000..95d332f41
--- /dev/null
+++ b/gcc/testsuite/g++.dg/parse/expr3.C
@@ -0,0 +1,32 @@
+/* { dg-do compile } */
+/* PR/18047  Test that operators have the right precedence.  */
+/* by bonzini@gnu.org */
+
+#define test(lower, higher, a, b, c, d) \
+  test_(lower, higher, a, b, c, d, __LINE__)
+
+#define test_(lower, higher, a, b, c, d, line)\
+   test__(lower, higher, a, b, c, d, line)
+
+/* The first declaration tests that the parentheses are added correctly
+   by the expression parser.  The second tests that the two possible
+   orderings of precedences do give different results.  */
+#define test__(lower, higher, a, b, c, d, line) \
+  char test##line[ \
+    (a higher b lower c higher d) == \
+    ((a higher b) lower (c higher d)) \
+    ? 1 : -1]; \
+  char doublecheck##line[ \
+    (a higher b lower c higher d) == \
+    (a higher (b lower c) higher d) \
+    ? -1 : 1];
+
+test (||, &&, 1, 1, 0, 0)
+test (&&, |, 5, 1, 1, 19)
+test (|, ^, 1, 2, 2, 1)
+test (^, &, 1, 3, 2, 6)
+test (&, ==, 1, 3, 2, 0)
+test (==, <, 2, 0, 0, 0)
+test (<, <<, 2, 3, 6, 8)
+test (<<, +, 2, 3, 4, 5)
+test (+, *, 2, 6, 9, 13)