b8bda9d446
For lambdas that are converted to C function pointers,
```
int (*ret_zero)() = []() { return 0; };
```
clang will generate conversion method like:
```
CXXConversionDecl implicit used constexpr operator int (*)() 'int (*() const noexcept)()' inline
-CompoundStmt
-ReturnStmt
-ImplicitCastExpr 'int (*)()' <FunctionToPointerDecay>
-DeclRefExpr 'int ()' lvalue CXXMethod 0x5ddb6fe35b18 '__invoke' 'int ()'
-CXXMethodDecl implicit used __invoke 'int ()' static inline
-CompoundStmt (empty)
```
Based on comment in Sema, `__invoke`'s function body is left empty
because it's will be filled in CodeGen, so in AST analysis phase we
should get lambda's `operator()` directly instead of calling `__invoke`
itself.
22 lines
612 B
C++
22 lines
612 B
C++
// RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=core,debug.ExprInspection -analyzer-config inline-lambdas=true -verify %s
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void clang_analyzer_eval(bool);
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void basic() {
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int (*ret_zero)() = []() { return 0; };
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clang_analyzer_eval(ret_zero() == 0); // expected-warning{{TRUE}}
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}
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void withParam() {
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int (*add_ten)(int) = [](int b) { return b + 10; };
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clang_analyzer_eval(add_ten(1) == 11); // expected-warning{{TRUE}}
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}
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int callBack(int (*fp)(int), int x) {
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return fp(x);
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}
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void passWithFunc() {
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clang_analyzer_eval(callBack([](int x) { return x; }, 5) == 5); // expected-warning{{TRUE}}
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}
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