diff options
Diffstat (limited to 'src/qml/compiler/qv4codegen_p.h')
-rw-r--r-- | src/qml/compiler/qv4codegen_p.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/qml/compiler/qv4codegen_p.h b/src/qml/compiler/qv4codegen_p.h index 0bc04750f7..289728f505 100644 --- a/src/qml/compiler/qv4codegen_p.h +++ b/src/qml/compiler/qv4codegen_p.h @@ -761,6 +761,31 @@ protected: bool _onoff; }; + class RecursionDepthCheck { + public: + RecursionDepthCheck(Codegen *cg, const AST::SourceLocation &loc) + : _cg(cg) + { +#ifdef QT_NO_DEBUG + const int depthLimit = 4000; // limit to ~1000 deep +#else + const int depthLimit = 1000; // limit to ~250 deep +#endif // QT_NO_DEBUG + + ++_cg->_recursionDepth; + if (_cg->_recursionDepth > depthLimit) + _cg->throwSyntaxError(loc, QStringLiteral("Maximum statement or expression depth exceeded")); + } + + ~RecursionDepthCheck() + { --_cg->_recursionDepth; } + + private: + Codegen *_cg; + }; + int _recursionDepth = 0; + friend class RecursionDepthCheck; + private: VolatileMemoryLocations scanVolatileMemoryLocations(AST::Node *ast) const; void handleConstruct(const Reference &base, AST::ArgumentList *args); |