1 // RUN: %clang_cc1 %s -verify -Wno-constant-conversion
2 // RUN: %clang_cc1 %s -verify -Wno-constant-conversion -Wno-implicit-int-float-conversion -Wimplicit-const-int-float-conversion
3 // RUN: %clang_cc1 %s -DNONCONST=1 -verify -Wno-constant-conversion -Wimplicit-int-float-conversion
4
5 #ifdef NONCONST
testReturn(long a,float b)6 long testReturn(long a, float b) {
7 return a + b; // expected-warning {{implicit conversion from 'long' to 'float' may lose precision}}
8 }
9 #endif
10
testAssignment()11 void testAssignment() {
12 float f = 222222;
13 double b = 222222222222L;
14
15 float ff = 222222222222L; // expected-warning {{changes value from 222222222222 to 222222221312}}
16 float ffff = 222222222222UL; // expected-warning {{changes value from 222222222222 to 222222221312}}
17
18 long l = 222222222222L;
19 #ifdef NONCOST
20 float fff = l; // expected-warning {{implicit conversion from 'long' to 'float' may lose precision}}
21 #endif
22 }
23
testExpression()24 void testExpression() {
25 float a = 0.0f;
26
27 float b = 222222222222L + a; // expected-warning {{changes value from 222222222222 to 222222221312}}
28
29 float g = 22222222 + 22222222;
30 float c = 22222222 + 22222223; // expected-warning {{implicit conversion from 'int' to 'float' changes value from 44444445 to 44444444}}
31
32 int i = 0;
33 #ifdef NONCONST
34 float d = i + a; // expected-warning {{implicit conversion from 'int' to 'float' may lose precision}}
35 #endif
36
37 double e = 0.0;
38 double f = i + e;
39 }
40
testCNarrowing()41 void testCNarrowing() {
42 // Since this is a C file. C++11 narrowing is not in effect.
43 // In this case, we should issue warnings.
44 float a = {222222222222L}; // expected-warning {{changes value from 222222222222 to 222222221312}}
45
46 long b = 222222222222L;
47 #ifdef NONCONST
48 float c = {b}; // expected-warning {{implicit conversion from 'long' to 'float' may lose precision}}
49 #endif
50 }
51