[PATCH] D42779: [analyzer] NFC: Make sure we don't ever inline the constructor for which the temporary destructor is noreturn and missing.

[Artem Dergachev via Phabricator via cfe-commits]

NoQ updated this revision to Diff 133675.
NoQ marked an inline comment as done.
NoQ added a comment.

Add the comment.


https://reviews.llvm.org/D42779

Files:
  lib/StaticAnalyzer/Core/ExprEngineCXX.cpp


Index: lib/StaticAnalyzer/Core/ExprEngineCXX.cpp
===================================================================
--- lib/StaticAnalyzer/Core/ExprEngineCXX.cpp
+++ lib/StaticAnalyzer/Core/ExprEngineCXX.cpp
@@ -350,20 +350,30 @@
   // paths when no-return temporary destructors are used for assertions.
   const AnalysisDeclContext *ADC = LCtx->getAnalysisDeclContext();
   if (!ADC->getCFGBuildOptions().AddTemporaryDtors) {
-      const MemRegion *Target = Call->getCXXThisVal().getAsRegion();
-      if (Target && isa<CXXTempObjectRegion>(Target) &&
-          Call->getDecl()->getParent()->isAnyDestructorNoReturn()) {
+    const MemRegion *Target = Call->getCXXThisVal().getAsRegion();
+    if (Target && isa<CXXTempObjectRegion>(Target) &&
+        Call->getDecl()->getParent()->isAnyDestructorNoReturn()) {
+
+      // If we've inlined the constructor, then DstEvaluated would be empty.
+      // In this case we still want a sink, which could be implemented
+      // in processCallExit. But we don't have that implemented at the moment,
+      // so if you hit this assertion, see if you can avoid inlining
+      // the respective constructor when analyzer-config cfg-temporary-dtors
+      // is set to false.
+      // Otherwise there's nothing wrong with inlining such constructor.
+      assert(!DstEvaluated.empty() &&
+             "We should not have inlined this constructor!");
 
       for (ExplodedNode *N : DstEvaluated) {
         Bldr.generateSink(CE, N, N->getState());
       }
 
-      // There is no need to run the PostCall and PostStmtchecker
+      // There is no need to run the PostCall and PostStmt checker
       // callbacks because we just generated sinks on all nodes in th
       // frontier.
       return;
     }
- }
+  }
 
   ExplodedNodeSet DstPostCall;
   getCheckerManager().runCheckersForPostCall(DstPostCall, DstEvaluated,


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D42779.133675.patch
Type: text/x-patch
Size: 1872 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20180209/220d4bbf/attachment-0001.bin>