[clang] [clang-repl] Fix assertion failure in CleanUpPTU() (PR #85378)

[Vassil Vassilev via cfe-commits]

Stefan =?utf-8?q?Gränitz?= <stefan.graen...@gmail.com>
Message-ID:
In-Reply-To: <llvm.org/llvm/llvm-project/pull/85...@github.com>


================
@@ -375,16 +375,22 @@ void IncrementalParser::CleanUpPTU(PartialTranslationUnit 
&PTU) {
   TranslationUnitDecl *MostRecentTU = PTU.TUPart;
   TranslationUnitDecl *FirstTU = MostRecentTU->getFirstDecl();
   if (StoredDeclsMap *Map = FirstTU->getPrimaryContext()->getLookupPtr()) {
-    for (auto I = Map->begin(); I != Map->end(); ++I) {
-      StoredDeclsList &List = I->second;
+    for (auto &&[Key, List] : *Map) {
       DeclContextLookupResult R = List.getLookupResult();
+      std::vector<NamedDecl *> NamedDeclsToRemove;
+      bool RemoveAll = true;
       for (NamedDecl *D : R) {
-        if (D->getTranslationUnitDecl() == MostRecentTU) {
+        if (D->getTranslationUnitDecl() == MostRecentTU)
+          NamedDeclsToRemove.push_back(D);
+        else
+          RemoveAll = false;
+      }
+      if (LLVM_LIKELY(RemoveAll)) {
+        Map->erase(Key);
+      } else {
----------------
vgvassilev wrote:

```suggestion
      if (LLVM_LIKELY(RemoveAll))
        Map->erase(Key);
      else
```

https://github.com/llvm/llvm-project/pull/85378
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