1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/c90-array-lval-4.c b/gcc/testsuite/gcc.dg/c90-array-lval-4.c
new file mode 100644
index 0000000..1f9cb14
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/c90-array-lval-4.c
@@ -0,0 +1,26 @@
+/* Test for non-lvalue arrays decaying to pointers: in C99 only.
+   Test various ways of producing non-lvalue arrays.  */
+/* Origin: Joseph Myers <jsm28@cam.ac.uk> */
+/* { dg-do compile } */
+/* { dg-options "-std=iso9899:1990 -pedantic-errors" } */
+
+struct s { char c[17]; };
+
+struct s x;
+
+struct s a, b, c;
+int d;
+
+#define ASSERT(v, a)	char v[((a) ? 1 : -1)]
+
+ASSERT (p, sizeof (x.c) == 17);
+ASSERT (q, sizeof (0, x.c) == sizeof (char *));
+ASSERT (r0, sizeof ((d ? b : c).c) == 17);
+ASSERT (r1, sizeof ((d, b).c) == 17);
+ASSERT (r2, sizeof ((a = b).c) == 17);
+/* The non-lvalue array does not decay to a pointer, so the comma expression
+   has (non-lvalue) array type.
+*/
+ASSERT (s0, sizeof (0, (d ? b : c).c) == 17); /* { dg-bogus "array" "bad non-lvalue array handling" } */
+ASSERT (s0, sizeof (0, (d, b).c) == 17); /* { dg-bogus "array" "bad non-lvalue array handling" } */
+ASSERT (s0, sizeof (0, (a = b).c) == 17); /* { dg-bogus "array" "bad non-lvalue array handling" } */