From: Martin Uecker <muecker@gwdg.de>
Date: Mon, 4 Jan 2021 21:53:58 +0000 (+0100)
Subject: C: Add test for incorrect warning for assignment of certain volatile expressions... 
X-Git-Tag: upstream/12.2.0~10504
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a000eb5918e09d28838ef572f4eea924d32db09b;p=platform%2Fupstream%2Fgcc.git

C: Add test for incorrect warning for assignment of certain volatile expressions fixed by commit 58a45ce [PR98029]

2021-01-04  Martin Uecker  <muecker@gwdg.de>

gcc/testsuite/
	PR c/98029
	* gcc.dg/pr98029.c: New test.
---

diff --git a/gcc/testsuite/gcc.dg/pr98029.c b/gcc/testsuite/gcc.dg/pr98029.c
new file mode 100644
index 0000000..148f23c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr98029.c
@@ -0,0 +1,21 @@
+/* pr98029 */
+/* { dg-do compile } */
+/* { dg-options "-Wunused" } */
+
+double f2 (void)
+{
+	volatile double d;
+	int i;
+
+	for (d = 2.0, i = 0; i < 5; i++, d *= d) /* { dg-bogus "right-hand operand of comma expression has no effect" } */
+		;
+
+	return d;
+}
+
+int g(void)
+{
+	volatile int x;
+	(x = 1, (void)1); /* { dg-bogus "right-hand operand of comma expression has no effect" } */
+	return x;
+}