[analyzer] Do not continue to analyze a path if the constraints contradict with builtin assume

Differential Revision: https://reviews.llvm.org/D34502


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@305991 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/StaticAnalyzer/Checkers/BuiltinFunctionChecker.cpp b/lib/StaticAnalyzer/Checkers/BuiltinFunctionChecker.cpp
index 48d6cd8a52..097d419880 100644
--- a/lib/StaticAnalyzer/Checkers/BuiltinFunctionChecker.cpp
+++ b/lib/StaticAnalyzer/Checkers/BuiltinFunctionChecker.cpp
@@ -50,8 +50,10 @@ bool BuiltinFunctionChecker::evalCall(const CallExpr *CE,
     state = state->assume(ArgSVal.castAs<DefinedOrUnknownSVal>(), true);
     // FIXME: do we want to warn here? Not right now. The most reports might
     // come from infeasible paths, thus being false positives.
-    if (!state)
+    if (!state) {
+      C.generateSink(C.getState(), C.getPredecessor());
       return true;
+    }
 
     C.addTransition(state);
     return true;