51 lines · c
1// RUN: %clang_cc1 %s -verify -Wno-constant-conversion2// RUN: %clang_cc1 %s -verify -Wno-constant-conversion -Wno-implicit-int-float-conversion -Wimplicit-const-int-float-conversion3// RUN: %clang_cc1 %s -DNONCONST=1 -verify -Wno-constant-conversion -Wimplicit-int-float-conversion4 5#ifdef NONCONST6long testReturn(long a, float b) {7 return a + b; // expected-warning {{implicit conversion from 'long' to 'float' may lose precision}}8}9#endif10 11void testAssignment(void) {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 NONCONST20 float fff = l; // expected-warning {{implicit conversion from 'long' to 'float' may lose precision}}21#endif22}23 24void testExpression(void) {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 NONCONST34 float d = i + a; // expected-warning {{implicit conversion from 'int' to 'float' may lose precision}}35#endif36 37 double e = 0.0;38 double f = i + e;39}40 41void testCNarrowing(void) {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 NONCONST48 float c = {b}; // expected-warning {{implicit conversion from 'long' to 'float' may lose precision}}49#endif50}51