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diff gcc/testsuite/gcc.dg/20020220-2.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/20020220-2.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,12 @@
+/* PR c/4697
+   Test whether operand has no effect warning is given for compound
+   expression.  */
+/* { dg-do compile } */
+/* { dg-options "-O2 -Wunused" } */
+
+int b;
+int foo (int a)
+{
+  a = a + 1, 5 * b; /* { dg-warning "right-hand operand of comma expression has no effect" } */
+  return a;
+}