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1 // RUN: %clang_cc1 -triple i386-pc-unknown -Wconversion -Wliteral-conversion -fsyntax-only -verify %s
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2
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3 // C DR #316, PR 3626.
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4 void f0(a, b, c, d) int a,b,c,d; {}
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5 void t0(void) {
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6 f0(1); // expected-warning{{too few arguments}}
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7 }
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8
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9 void f1(a, b) int a, b; {}
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10 void t1(void) {
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11 f1(1, 2, 3); // expected-warning{{too many arguments}}
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12 }
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13
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14 void f2(float); // expected-note{{previous declaration is here}}
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15 void 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}}
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16
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17 typedef void (*f3)(void);
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18 f3 t3(int b) { return b? f0 : f1; } // okay
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19
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20 // <rdar://problem/8193107>
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21 void f4() {
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22 char *rindex();
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23 }
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24
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25 char *rindex(s, c)
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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}}
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27 {
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28 return 0;
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29 }
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30
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31 // PR8314
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32 void proto(int);
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33 void proto(x)
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34 int x;
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35 {
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36 }
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37
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38 void use_proto() {
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39 proto(42.1); // expected-warning{{implicit conversion from 'double' to 'int' changes value from 42.1 to 42}}
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40 (&proto)(42.1); // expected-warning{{implicit conversion from 'double' to 'int' changes value from 42.1 to 42}}
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41 }
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42
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43 // PR31020
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44 void func(short d) __attribute__((cdecl)); // expected-note{{previous declaration is here}}
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45 void __attribute__((cdecl)) func(d)
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46 short d; // expected-warning{{promoted type 'int' of K&R function parameter is not compatible with the parameter type 'short' declared in a previous prototype}}
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47 {}
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