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author | Carlo Zancanaro <carlo@pc-4w14-0.cs.usyd.edu.au> | 2012-10-15 17:10:06 +1100 |
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committer | Carlo Zancanaro <carlo@pc-4w14-0.cs.usyd.edu.au> | 2012-10-15 17:10:06 +1100 |
commit | be1de4be954c80875ad4108e0a33e8e131b2f2c0 (patch) | |
tree | 1fbbecf276bf7c7bdcbb4dd446099d6d90eaa516 /clang/test/SemaCXX/bool.cpp | |
parent | c4626a62754862d20b41e8a46a3574264ea80e6d (diff) | |
parent | f1bd2e48c5324d3f7cda4090c87f8a5b6f463ce2 (diff) |
Merge branch 'master' of ssh://bitbucket.org/czan/honours
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}} +} |