37 lines
1.5 KiB
C
37 lines
1.5 KiB
C
// RUN: %clang_cc1 -triple i686-pc-linux-gnu -fsyntax-only -verify %s -Wabsolute-value
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// RUN: %clang_cc1 -triple i686-pc-linux-gnu -fsyntax-only %s -Wabsolute-value -fdiagnostics-parseable-fixits 2>&1 | FileCheck %s
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int abs(int);
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// Wrong signature
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int fabsf(int);
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// expected-warning@-1{{incompatible redeclaration of library function 'fabsf'}}
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// expected-note@-2{{'fabsf' is a builtin with type 'float (float)'}}
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void test_int(int i, unsigned u, long long ll, float f, double d) {
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(void)abs(i);
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// Remove abs call
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(void)abs(u);
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// expected-warning@-1{{taking the absolute value of unsigned type 'unsigned int' has no effect}}
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// expected-note@-2{{remove the call to 'abs' since unsigned values cannot be negative}}
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// CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:9-[[@LINE-3]]:12}:""
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int llabs;
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(void)llabs;
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// Conflict in names, no notes
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(void)abs(ll);
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// expected-warning@-1{{absolute value function 'abs' given an argument of type 'long long' but has parameter of type 'int' which may cause truncation of value}}
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// Conflict in names, no notes
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(void)abs(f);
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// expected-warning@-1{{using integer absolute value function 'abs' when argument is of floating point type}}
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// Suggest header.
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(void)abs(d);
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// expected-warning@-1{{using integer absolute value function 'abs' when argument is of floating point type}}
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// expected-note@-2{{use function 'fabs' instead}}
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// expected-note@-3{{include the header <math.h> or explicitly provide a declaration for 'fabs'}}
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// CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:9-[[@LINE-4]]:12}:"fabs"
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}
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