Fix warning with -Wsign-compare -Wsystem-headers
[official-gcc.git] / gcc / testsuite / gcc.dg / c90-const-expr-1.c
blobe4c27ac4561be6c51e447526387cc531c3e07fb0
1 /* Test for constraints on constant expressions. In C90 it is clear that
2 certain constructs are not permitted in unevaluated parts of an
3 expression (except in sizeof); in C99 it might fall within implementation
4 latitude.
5 */
6 /* Origin: Joseph Myers <jsm28@cam.ac.uk>; inspired by
7 http://deja.com/getdoc.xp?AN=524271595&fmt=text by Peter Seebach.
8 */
9 /* { dg-do compile } */
10 /* { dg-options "-std=iso9899:1990 -pedantic-errors" } */
12 extern int bar (void);
14 void
15 foo (void)
17 int i;
18 static int j = (1 ? 0 : (i = 2)); /* { dg-error "initial" "assignment" } */
19 static int k = (1 ? 0 : ++i); /* { dg-error "initial" "increment" } */
20 static int l = (1 ? 0 : --i); /* { dg-error "initial" "decrement" } */
21 static int m = (1 ? 0 : bar ()); /* { dg-error "initial" "function call" } */
22 static int n = (1 ? 0 : (2, 3)); /* { dg-error "initial" "comma" } */