knr-def-call.c revision 9ce6377714a8eb8f577c87028300421e72b00dc9 
1// RUN: %clang_cc1 -Wconversion -Wliteral-conversion -fsyntax-only -verify %s
2
3// C DR #316, PR 3626.
4void f0(a, b, c, d) int a,b,c,d; {}
5void t0(void) {
6  f0(1);  // expected-warning{{too few arguments}}
7}
8
9void f1(a, b) int a, b; {}
10void t1(void) {
11  f1(1, 2, 3); // expected-warning{{too many arguments}}
12}
13
14void f2(float); // expected-note{{previous declaration is here}}
15void f2(x) float x; { } // expected-warning{{promoted type 'double' of K&R function parameter is not compatible with the parameter type 'float' declared in a previous prototype}}
16
17typedef void (*f3)(void);
18f3 t3(int b) { return b? f0 : f1; } // okay
19
20// <rdar://problem/8193107>
21void f4() {
22    char *rindex();
23}
24
25char *rindex(s, c)
26     register char *s, c; // expected-warning{{promoted type 'char *' of K&R function parameter is not compatible with the parameter type 'const char *' declared in a previous prototype}}
27{
28  return 0;
29}
30
31// PR8314
32void proto(int);
33void proto(x)
34     int x;
35{
36}
37
38void use_proto() {
39  proto(42.1); // expected-warning{{implicit conversion turns literal floating-point number into integer}}
40  (&proto)(42.1); // expected-warning{{implicit conversion turns literal floating-point number into integer}}
41}
42