1 files changed, 30 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/gnu99-static-1.c b/gcc/testsuite/gcc.dg/gnu99-static-1.c
new file mode 100644
index 000000000..b600a4b12
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/gnu99-static-1.c
@@ -0,0 +1,30 @@
+/* It is a constraint violation for a static function to be declared
+   but not defined if it is used except in a sizeof expression whose
+   result is an integer constant.  In GNU C, we need to consider
+   __typeof__ and __alignof__ as well.  __alignof__ always returns a
+   constant, so static functions can always be used therein.
+   __typeof__ evaluates its argument iff it has variably modified
+   type.  */
+/* Origin: Joseph Myers <jsm@polyomino.org.uk> */
+/* { dg-do compile } */
+/* { dg-options "-O2 -std=gnu99 -pedantic-errors" } */
+
+/* __alignof__, OK.  */
+static int f0(void);
+void g0(void) { __alignof__(f0()); }
+
+/* __typeof__ not variably modified, OK.  */
+static int f1(void);
+void g1(void) { __typeof__(f1()) x; }
+
+/* __typeof__ variably modified, not OK.  */
+static int f2(void); /* { dg-error "used but never defined" } */
+void g2(void) { __typeof__(int [f2()]) x; }
+
+/* __typeof__ variably modified, not OK.  */
+static int f3(void); /* { dg-error "used but never defined" } */
+void g3(void) { __typeof__(int (*)[f3()]) x; }
+
+/* Integer sizeof of VM typeof, OK.  */
+static int f4(void);
+void g4(void) { sizeof(__typeof__(int (*)[f3()])); }