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diff gcc/testsuite/gcc.dg/pr59871.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/pr59871.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,22 @@
+/* PR c/59871 */
+/* { dg-do compile } */
+/* { dg-options "-Wunused" } */
+
+extern int bar ();
+
+void
+foo (int *p, int i)
+{
+  p[0] = (bar (), 1, bar ()); /* { dg-warning "right-hand operand of comma expression has no effect" } */
+  p[1] = (1, bar ()); /* { dg-warning "left-hand operand of comma expression has no effect" } */
+  bar (), 1, bar (); /* { dg-warning "right-hand operand of comma expression has no effect" } */
+  bar (), 1; /* { dg-warning "right-hand operand of comma expression has no effect" } */
+  1, bar (); /* { dg-warning "left-hand operand of comma expression has no effect" } */
+  (bar (), 1); /* { dg-warning "right-hand operand of comma expression has no effect" } */
+  bar (), 5 * i; /* { dg-warning "right-hand operand of comma expression has no effect" } */
+  (bar (), 5 * i); /* { dg-warning "right-hand operand of comma expression has no effect" } */
+  (bar (), (bar (), (bar (), (bar (), (bar (), (bar (), (bar (), 7))))))); /* { dg-warning "right-hand operand of comma expression has no effect" } */
+  bar (), (bar (), (bar (), (bar (), (bar (), (bar (), (bar (), 7)))))); /* { dg-warning "right-hand operand of comma expression has no effect" } */
+  bar (), (bar (), (bar (), (bar (), (bar (), (bar (), (7, bar ())))))); /* { dg-warning "left-hand operand of comma expression has no effect" } */
+  (bar (), (bar (), (bar (), (bar (), (bar (), (bar (), (7, bar ()))))))); /* { dg-warning "left-hand operand of comma expression has no effect" } */
+}