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Diffstat (limited to 'test/Analysis/lambdas-generalized-capture.cpp')
-rw-r--r-- | test/Analysis/lambdas-generalized-capture.cpp | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/test/Analysis/lambdas-generalized-capture.cpp b/test/Analysis/lambdas-generalized-capture.cpp new file mode 100644 index 0000000..790e15e --- /dev/null +++ b/test/Analysis/lambdas-generalized-capture.cpp @@ -0,0 +1,50 @@ +// RUN: %clang_cc1 -std=c++14 -fsyntax-only -analyze -analyzer-checker=core,deadcode,debug.ExprInspection -verify %s + +int clang_analyzer_eval(int); + +void generalizedCapture() { + int v = 7; + auto lambda = [x=v]() { + return x; + }; + + int result = lambda(); + clang_analyzer_eval(result == 7); // expected-warning {{TRUE}} +} + +void sideEffectsInGeneralizedCapture() { + int v = 7; + auto lambda = [x=v++]() { + return x; + }; + clang_analyzer_eval(v == 8); // expected-warning {{TRUE}} + + int r1 = lambda(); + int r2 = lambda(); + clang_analyzer_eval(r1 == 7); // expected-warning {{TRUE}} + clang_analyzer_eval(r2 == 7); // expected-warning {{TRUE}} + clang_analyzer_eval(v == 8); // expected-warning {{TRUE}} +} + +int addOne(int p) { + return p + 1; +} + +void inliningInGeneralizedCapture() { + int v = 7; + auto lambda = [x=addOne(v)]() { + return x; + }; + + int result = lambda(); + clang_analyzer_eval(result == 8); // expected-warning {{TRUE}} +} + +void caseSplitInGeneralizedCapture(bool p) { + auto lambda = [x=(p ? 1 : 2)]() { + return x; + }; + + int result = lambda(); + clang_analyzer_eval(result == 1); // expected-warning {{FALSE}} expected-warning {{TRUE}} +} |