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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/warn-func-as-bool.cpp | |
parent | c4626a62754862d20b41e8a46a3574264ea80e6d (diff) | |
parent | f1bd2e48c5324d3f7cda4090c87f8a5b6f463ce2 (diff) |
Merge branch 'master' of ssh://bitbucket.org/czan/honours
Diffstat (limited to 'clang/test/SemaCXX/warn-func-as-bool.cpp')
-rw-r--r-- | clang/test/SemaCXX/warn-func-as-bool.cpp | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/warn-func-as-bool.cpp b/clang/test/SemaCXX/warn-func-as-bool.cpp new file mode 100644 index 0000000..b5df744 --- /dev/null +++ b/clang/test/SemaCXX/warn-func-as-bool.cpp @@ -0,0 +1,40 @@ +// RUN: %clang_cc1 -x c++ -verify -fsyntax-only %s + +void f1(); + +struct S { + static void f2(); +}; + +extern void f3() __attribute__((weak_import)); + +struct S2 { + static void f4() __attribute__((weak_import)); +}; + +bool f5(); +bool f6(int); + +void bar() { + bool b; + + b = f1; // expected-warning {{address of function 'f1' will always evaluate to 'true'}} \ + expected-note {{prefix with the address-of operator to silence this warning}} + if (f1) {} // expected-warning {{address of function 'f1' will always evaluate to 'true'}} \ + expected-note {{prefix with the address-of operator to silence this warning}} + b = S::f2; // expected-warning {{address of function 'S::f2' will always evaluate to 'true'}} \ + expected-note {{prefix with the address-of operator to silence this warning}} + if (S::f2) {} // expected-warning {{address of function 'S::f2' will always evaluate to 'true'}} \ + expected-note {{prefix with the address-of operator to silence this warning}} + b = f5; // expected-warning {{address of function 'f5' will always evaluate to 'true'}} \ + expected-note {{prefix with the address-of operator to silence this warning}} \ + expected-note {{suffix with parentheses to turn this into a function call}} + b = f6; // expected-warning {{address of function 'f6' will always evaluate to 'true'}} \ + expected-note {{prefix with the address-of operator to silence this warning}} + + // implicit casts of weakly imported symbols are ok: + b = f3; + if (f3) {} + b = S2::f4; + if (S2::f4) {} +} |