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Diffstat (limited to 'test/SemaCXX/warn-string-conversion.cpp')
| -rw-r--r-- | test/SemaCXX/warn-string-conversion.cpp | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/SemaCXX/warn-string-conversion.cpp b/test/SemaCXX/warn-string-conversion.cpp new file mode 100644 index 000000000000..23960e48df61 --- /dev/null +++ b/test/SemaCXX/warn-string-conversion.cpp @@ -0,0 +1,18 @@ +// RUN: %clang_cc1 -fsyntax-only -Wstring-conversion -verify %s + +// Warn on cases where a string literal is converted into a bool. +// An exception is made for this in logical operators. +void assert(bool condition); +void test0() { + bool b0 = "hi"; // expected-warning{{implicit conversion turns string literal into bool: 'const char [3]' to 'bool'}} + b0 = ""; // expected-warning{{implicit conversion turns string literal into bool: 'const char [1]' to 'bool'}} + b0 = 0 && ""; + assert("error"); // expected-warning{{implicit conversion turns string literal into bool: 'const char [6]' to 'bool'}} + assert(0 && "error"); + + while("hi") {} // expected-warning{{implicit conversion turns string literal into bool: 'const char [3]' to 'bool'}} + do {} while("hi"); // expected-warning{{implicit conversion turns string literal into bool: 'const char [3]' to 'bool'}} + for (;"hi";); // expected-warning{{implicit conversion turns string literal into bool: 'const char [3]' to 'bool'}} + if("hi") {} // expected-warning{{implicit conversion turns string literal into bool: 'const char [3]' to 'bool'}} +} + |