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-rw-r--r--gcc/testsuite/gcc.dg/void-cast-2.c8
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diff --git a/gcc/testsuite/gcc.dg/void-cast-2.c b/gcc/testsuite/gcc.dg/void-cast-2.c
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+/* Test further cases of warnings for comma expressions, with and
+ without casts to void. */
+/* Origin: Joseph Myers <joseph@codesourcery.com> */
+/* { dg-do compile } */
+/* { dg-options "-Wall" } */
+int a, b, c, d;
+int e(void) { return (char)a, b; } /* { dg-warning "warning: left-hand operand of comma expression has no effect" } */
+int f(void) { return (a ? (void)b : (void)c), d; } /* { dg-warning "warning: left-hand operand of comma expression has no effect" } */