diff options
-rw-r--r-- | lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp | 15 | ||||
-rw-r--r-- | test/Analysis/retain-release-inline.m | 14 |
2 files changed, 29 insertions, 0 deletions
diff --git a/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp b/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp index b6f91d9fdc..3ae76e0203 100644 --- a/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp +++ b/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp @@ -3069,8 +3069,23 @@ bool RetainCountChecker::evalCall(const CallExpr *CE, CheckerContext &C) const { // Handle return statements. //===----------------------------------------------------------------------===// +// Return true if the current LocationContext has no caller context. +static bool inTopFrame(CheckerContext &C) { + const LocationContext *LC = C.getLocationContext(); + return LC->getParent() == 0; +} + void RetainCountChecker::checkPreStmt(const ReturnStmt *S, CheckerContext &C) const { + + // Only adjust the reference count if this is the top-level call frame, + // and not the result of inlining. In the future, we should do + // better checking even for inlined calls, and see if they match + // with their expected semantics (e.g., the method should return a retained + // object, etc.). + if (!inTopFrame(C)) + return; + const Expr *RetE = S->getRetValue(); if (!RetE) return; diff --git a/test/Analysis/retain-release-inline.m b/test/Analysis/retain-release-inline.m index 27c0971e2a..bfb00776ec 100644 --- a/test/Analysis/retain-release-inline.m +++ b/test/Analysis/retain-release-inline.m @@ -281,3 +281,17 @@ void test_neg() { bar(s); } +//===----------------------------------------------------------------------===// +// Test returning retained and not-retained values. +//===----------------------------------------------------------------------===// + +id test_return_retained() { + return [[NSString alloc] init]; // expected-warning {{leak}} +} + +void test_test_return_retained() { + id x = test_return_retained(); + [x retain]; + [x release]; +} + |