constant-conversion.c revision 935cd6e8529edbb3b0eba660bd934b508766de37
1// RUN: %clang_cc1 -fsyntax-only -verify -triple x86_64-apple-darwin %s 2 3// This file tests -Wconstant-conversion, a subcategory of -Wconversion 4// which is on by default. 5 6// rdar://problem/6792488 7void test_6792488(void) { 8 int x = 0x3ff0000000000000U; // expected-warning {{implicit conversion from 'unsigned long' to 'int' changes value from 4607182418800017408 to 0}} 9} 10 11void test_7809123(void) { 12 struct { int i5 : 5; } a; 13 14 a.i5 = 36; // expected-warning {{implicit truncation from 'int' to bitfield changes value from 36 to 4}} 15} 16 17void test() { 18 struct { int bit : 1; } a; 19 a.bit = 1; // shouldn't warn 20} 21