diff options
Diffstat (limited to 'clang/test/SemaCXX/constant-conversion.cpp')
| -rw-r--r-- | clang/test/SemaCXX/constant-conversion.cpp | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/constant-conversion.cpp b/clang/test/SemaCXX/constant-conversion.cpp new file mode 100644 index 00000000000..80deabf79a4 --- /dev/null +++ b/clang/test/SemaCXX/constant-conversion.cpp @@ -0,0 +1,24 @@ +// RUN: %clang_cc1 -fsyntax-only -verify -triple x86_64-apple-darwin %s + +// This file tests -Wconstant-conversion, a subcategory of -Wconversion +// which is on by default. + +constexpr int nines() { return 99999; } + +void too_big_for_char(int param) { + char warn1 = false ? 0 : 99999; + // expected-warning@-1 {{implicit conversion from 'int' to 'char' changes value from 99999 to -97}} + char warn2 = false ? 0 : nines(); + // expected-warning@-1 {{implicit conversion from 'int' to 'char' changes value from 99999 to -97}} + + char warn3 = param > 0 ? 0 : 99999; + // expected-warning@-1 {{implicit conversion from 'int' to 'char' changes value from 99999 to -97}} + char warn4 = param > 0 ? 0 : nines(); + // expected-warning@-1 {{implicit conversion from 'int' to 'char' changes value from 99999 to -97}} + + char ok1 = true ? 0 : 99999; + char ok2 = true ? 0 : nines(); + + char ok3 = true ? 0 : 99999 + 1; + char ok4 = true ? 0 : nines() + 1; +} |
