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author | Zancanaro; Carlo <czan8762@plang3.cs.usyd.edu.au> | 2012-09-24 09:58:17 +1000 |
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committer | Zancanaro; Carlo <czan8762@plang3.cs.usyd.edu.au> | 2012-09-24 09:58:17 +1000 |
commit | 222e2a7620e6520ffaf4fc4e69d79c18da31542e (patch) | |
tree | 7bfbc05bfa3b41c8f9d2e56d53a0bc3e310df239 /clang/test/SemaCXX/bool.cpp | |
parent | 3d206f03985b50beacae843d880bccdc91a9f424 (diff) |
Add the clang library to the repo (with some of my changes, too).
Diffstat (limited to 'clang/test/SemaCXX/bool.cpp')
-rw-r--r-- | clang/test/SemaCXX/bool.cpp | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/bool.cpp b/clang/test/SemaCXX/bool.cpp new file mode 100644 index 0000000..2b3ab68 --- /dev/null +++ b/clang/test/SemaCXX/bool.cpp @@ -0,0 +1,33 @@ +// RUN: %clang_cc1 -fsyntax-only -verify %s + +// Bool literals can be enum values. +enum { + ReadWrite = false, + ReadOnly = true +}; + +// bool cannot be decremented, and gives a warning on increment +void test(bool b) +{ + ++b; // expected-warning {{incrementing expression of type bool is deprecated}} + b++; // expected-warning {{incrementing expression of type bool is deprecated}} + --b; // expected-error {{cannot decrement expression of type bool}} + b--; // expected-error {{cannot decrement expression of type bool}} + + bool *b1 = (int *)0; // expected-error{{cannot initialize}} +} + +// static_assert_arg_is_bool(x) compiles only if x is a bool. +template <typename T> +void static_assert_arg_is_bool(T x) { + bool* p = &x; +} + +void test2() { + int n = 2; + static_assert_arg_is_bool(n && 4); // expected-warning {{use of logical '&&' with constant operand}} \ + // expected-note {{use '&' for a bitwise operation}} \ + // expected-note {{remove constant to silence this warning}} + static_assert_arg_is_bool(n || 5); // expected-warning {{use of logical '||' with constant operand}} \ + // expected-note {{use '|' for a bitwise operation}} +} |