51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
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// RUN: %clang_cc1 %s -verify -Wno-constant-conversion
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// RUN: %clang_cc1 %s -verify -Wno-constant-conversion -Wno-implicit-int-float-conversion -Wimplicit-const-int-float-conversion
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// RUN: %clang_cc1 %s -DNONCONST=1 -verify -Wno-constant-conversion -Wimplicit-int-float-conversion
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#ifdef NONCONST
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long testReturn(long a, float b) {
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return a + b; // expected-warning {{implicit conversion from 'long' to 'float' may lose precision}}
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}
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#endif
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void testAssignment() {
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float f = 222222;
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double b = 222222222222L;
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float ff = 222222222222L; // expected-warning {{changes value from 222222222222 to 222222221312}}
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float ffff = 222222222222UL; // expected-warning {{changes value from 222222222222 to 222222221312}}
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long l = 222222222222L;
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#ifdef NONCONST
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float fff = l; // expected-warning {{implicit conversion from 'long' to 'float' may lose precision}}
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#endif
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}
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void testExpression() {
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float a = 0.0f;
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float b = 222222222222L + a; // expected-warning {{changes value from 222222222222 to 222222221312}}
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float g = 22222222 + 22222222;
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float c = 22222222 + 22222223; // expected-warning {{implicit conversion from 'int' to 'float' changes value from 44444445 to 44444444}}
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int i = 0;
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#ifdef NONCONST
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float d = i + a; // expected-warning {{implicit conversion from 'int' to 'float' may lose precision}}
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#endif
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double e = 0.0;
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double f = i + e;
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}
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void testCNarrowing() {
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// Since this is a C file. C++11 narrowing is not in effect.
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// In this case, we should issue warnings.
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float a = {222222222222L}; // expected-warning {{changes value from 222222222222 to 222222221312}}
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long b = 222222222222L;
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#ifdef NONCONST
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float c = {b}; // expected-warning {{implicit conversion from 'long' to 'float' may lose precision}}
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#endif
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}
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