diff options
| -rw-r--r-- | clang/docs/ReleaseNotes.rst | 3 | ||||
| -rw-r--r-- | clang/test/Sema/enum-sign-conversion.c | 13 |
2 files changed, 15 insertions, 1 deletions
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst index 4c8099121ef..8699812496a 100644 --- a/clang/docs/ReleaseNotes.rst +++ b/clang/docs/ReleaseNotes.rst @@ -82,7 +82,8 @@ Improvements to Clang's diagnostics tautological comparisons between integer variable of the type ``T`` and the largest/smallest possible integer constant of that same type. -- For C code, ``-Wsign-compare``, ``-Wtautological-constant-compare`` and +- For C code, ``-Wsign-compare``, ``-Wsign-conversion``, + ``-Wtautological-constant-compare`` and ``-Wtautological-constant-out-of-range-compare`` were adjusted to use the underlying datatype of ``enum``. diff --git a/clang/test/Sema/enum-sign-conversion.c b/clang/test/Sema/enum-sign-conversion.c new file mode 100644 index 00000000000..518fc670d31 --- /dev/null +++ b/clang/test/Sema/enum-sign-conversion.c @@ -0,0 +1,13 @@ +// RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -fsyntax-only -verify -DUNSIGNED -Wsign-conversion %s +// RUN: %clang_cc1 -triple=x86_64-pc-win32 -fsyntax-only -verify -Wsign-conversion %s + +// PR35200 +enum X { A,B,C}; +int f(enum X x) { +#ifdef UNSIGNED + return x; // expected-warning {{implicit conversion changes signedness: 'enum X' to 'int'}} +#else + // expected-no-diagnostics + return x; +#endif +} |
