With the fix to PR98047 "C: Drop qualifiers of assignment expressions."
also the new incorrect warning for assignment of certain volatile expressions
introduced by dropping qualifiers in lvalue conversion (PR97702)
disappeared [P98029]. This patch only adds a test case.
-- Martin
C: Add test for incorrect warning for assignment of certain volatile
expressions fixed by commit 58a45ce [PR98029]
2020-12-12 Martin Uecker <muec...@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 00000000000..148f23ce5e0
--- /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;
+}
