From 6e683090d100409a80657cbeb7f741f4f94bfab7 Mon Sep 17 00:00:00 2001
From: Jason Merrill <jason@gcc.gnu.org>
Date: Fri, 7 Jun 2002 17:32:57 -0400
Subject: [PATCH] test for PR 6950
From-SVN: r54350
---
gcc/testsuite/gcc.dg/20020607-1.c | 40 +++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
create mode 100644 gcc/testsuite/gcc.dg/20020607-1.c
diff --git a/gcc/testsuite/gcc.dg/20020607-1.c b/gcc/testsuite/gcc.dg/20020607-1.c
new file mode 100644
index 000000000000..afad78d8cb0d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/20020607-1.c
@@ -0,0 +1,40 @@
+/* PR middle-end/6950
+ gcc 3.0.4 mistakenly set lhs.low to 0 at the beginning of the num_eq
+ expansion; it should use a temporary.
+/* { dg-do run } */
+
+typedef struct cpp_num cpp_num;
+struct cpp_num
+{
+ long high;
+ long low;
+ char overflow;
+};
+
+#define num_eq(num1, num2) (num1.low == num2.low && num1.high == num2.high)
+
+static cpp_num
+num_equality_op (lhs, rhs)
+ cpp_num lhs, rhs;
+{
+ lhs.low = num_eq (lhs, rhs);
+ lhs.high = 0;
+ lhs.overflow = 0;
+ return lhs;
+}
+
+int main()
+{
+ cpp_num a = { 1, 2 };
+ cpp_num b = { 3, 4 };
+
+ cpp_num result = num_equality_op (a, b);
+ if (result.low)
+ return 1;
+
+ result = num_equality_op (a, a);
+ if (!result.low)
+ return 2;
+
+ return 0;
+}
--
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