Re-commit r214547 with tests fixed. Hopefully all the bots will be happy now.

Original message:

Fix iterator invalidation issues that are breaking my modules buildbot's
bootstrap.

llvm-svn: 214555

2 files changed, 15 insertions, 6 deletions

diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index a14558f975a..55d47060ff9 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -3305,9 +3305,16 @@ void CodeGenModule::EmitVersionIdentMetadata() {
 }
 
 void CodeGenModule::EmitTargetMetadata() {
-  for (auto &I : MangledDeclNames) {
-    const Decl *D = I.first.getDecl()->getMostRecentDecl();
-    llvm::GlobalValue *GV = GetGlobalValue(I.second);
+  // Warning, new MangledDeclNames may be appended within this loop.
+  // We rely on MapVector insertions adding new elements to the end
+  // of the container.
+  // FIXME: Move this loop into the one target that needs it, and only
+  // loop over those declarations for which we couldn't emit the target
+  // metadata when we emitted the declaration.
+  for (unsigned I = 0; I != MangledDeclNames.size(); ++I) {
+    auto &Val = *(MangledDeclNames.begin() + I);
+    const Decl *D = Val.first.getDecl()->getMostRecentDecl();
+    llvm::GlobalValue *GV = GetGlobalValue(Val.second);
     getTargetCodeGenInfo().emitTargetMD(D, GV, *this);
   }
 }
diff --git a/clang/lib/CodeGen/ModuleBuilder.cpp b/clang/lib/CodeGen/ModuleBuilder.cpp
index c5d18d3286a..8c5e178fe28 100644
--- a/clang/lib/CodeGen/ModuleBuilder.cpp
+++ b/clang/lib/CodeGen/ModuleBuilder.cpp
@@ -94,9 +94,11 @@ namespace {
       for (DeclGroupRef::iterator I = DG.begin(), E = DG.end(); I != E; ++I)
         Builder->EmitTopLevelDecl(*I);
 
-      // Emit any deferred inline method definitions.
-      for (CXXMethodDecl *MD : DeferredInlineMethodDefinitions)
-        Builder->EmitTopLevelDecl(MD);
+      // Emit any deferred inline method definitions. Note that more deferred
+      // methods may be added during this loop, since ASTConsumer callbacks
+      // can be invoked if AST inspection results in declarations being added.
+      for (unsigned I = 0; I != DeferredInlineMethodDefinitions.size(); ++I)
+        Builder->EmitTopLevelDecl(DeferredInlineMethodDefinitions[I]);
       DeferredInlineMethodDefinitions.clear();
 
       return true;