diff --git a/clang/include/clang/InstallAPI/DylibVerifier.h b/clang/include/clang/InstallAPI/DylibVerifier.h
index 07dbd3bf5f2b1..a3df25f10de4b 100644
--- a/clang/include/clang/InstallAPI/DylibVerifier.h
+++ b/clang/include/clang/InstallAPI/DylibVerifier.h
@@ -10,6 +10,7 @@
 #define LLVM_CLANG_INSTALLAPI_DYLIBVERIFIER_H
 
 #include "clang/Basic/Diagnostic.h"
+#include "clang/Basic/SourceManager.h"
 #include "clang/InstallAPI/MachO.h"
 
 namespace clang {
@@ -99,11 +100,7 @@ class DylibVerifier : llvm::MachO::RecordVisitor {
   Result getState() const { return Ctx.FrontendState; }
 
   /// Set different source managers to the same diagnostics engine.
-  void setSourceManager(SourceManager &SourceMgr) const {
-    if (!Ctx.Diag)
-      return;
-    Ctx.Diag->setSourceManager(&SourceMgr);
-  }
+  void setSourceManager(IntrusiveRefCntPtr<SourceManager> SourceMgr);
 
 private:
   /// Determine whether to compare declaration to symbol in binary.
@@ -190,6 +187,9 @@ class DylibVerifier : llvm::MachO::RecordVisitor {
 
   // Track DWARF provided source location for dylibs.
   DWARFContext *DWARFCtx = nullptr;
+
+  // Source manager for each unique compiler instance.
+  llvm::SmallVector<IntrusiveRefCntPtr<SourceManager>, 12> SourceManagers;
 };
 
 } // namespace installapi
diff --git a/clang/include/clang/InstallAPI/Frontend.h b/clang/include/clang/InstallAPI/Frontend.h
index 5cccd891c5809..bc4e77de2b725 100644
--- a/clang/include/clang/InstallAPI/Frontend.h
+++ b/clang/include/clang/InstallAPI/Frontend.h
@@ -36,7 +36,7 @@ class InstallAPIAction : public ASTFrontendAction {
   std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
                                                  StringRef InFile) override {
     Ctx.Diags->getClient()->BeginSourceFile(CI.getLangOpts());
-    Ctx.Verifier->setSourceManager(CI.getSourceManager());
+    Ctx.Verifier->setSourceManager(CI.getSourceManagerPtr());
     return std::make_unique<InstallAPIVisitor>(
         CI.getASTContext(), Ctx, CI.getSourceManager(), CI.getPreprocessor());
   }
diff --git a/clang/include/clang/InstallAPI/FrontendRecords.h b/clang/include/clang/InstallAPI/FrontendRecords.h
index 59271e81e230c..ef82398addd7a 100644
--- a/clang/include/clang/InstallAPI/FrontendRecords.h
+++ b/clang/include/clang/InstallAPI/FrontendRecords.h
@@ -21,6 +21,7 @@ namespace installapi {
 struct FrontendAttrs {
   const AvailabilityInfo Avail;
   const Decl *D;
+  const SourceLocation Loc;
   const HeaderType Access;
 };
 
diff --git a/clang/lib/InstallAPI/DylibVerifier.cpp b/clang/lib/InstallAPI/DylibVerifier.cpp
index 2387ee0e78ad5..4fa2d4e9292c7 100644
--- a/clang/lib/InstallAPI/DylibVerifier.cpp
+++ b/clang/lib/InstallAPI/DylibVerifier.cpp
@@ -214,16 +214,16 @@ bool DylibVerifier::compareObjCInterfaceSymbols(const Record *R,
                              StringRef SymName, bool PrintAsWarning = false) {
     if (SymLinkage == RecordLinkage::Unknown)
       Ctx.emitDiag([&]() {
-        Ctx.Diag->Report(SymCtx.FA->D->getLocation(),
-                         PrintAsWarning ? diag::warn_library_missing_symbol
-                                        : diag::err_library_missing_symbol)
+        Ctx.Diag->Report(SymCtx.FA->Loc, PrintAsWarning
+                                             ? diag::warn_library_missing_symbol
+                                             : diag::err_library_missing_symbol)
             << SymName;
       });
     else
       Ctx.emitDiag([&]() {
-        Ctx.Diag->Report(SymCtx.FA->D->getLocation(),
-                         PrintAsWarning ? diag::warn_library_hidden_symbol
-                                        : diag::err_library_hidden_symbol)
+        Ctx.Diag->Report(SymCtx.FA->Loc, PrintAsWarning
+                                             ? diag::warn_library_hidden_symbol
+                                             : diag::err_library_hidden_symbol)
             << SymName;
       });
   };
@@ -270,16 +270,14 @@ DylibVerifier::Result DylibVerifier::compareVisibility(const Record *R,
   if (R->isExported()) {
     if (!DR) {
       Ctx.emitDiag([&]() {
-        Ctx.Diag->Report(SymCtx.FA->D->getLocation(),
-                         diag::err_library_missing_symbol)
+        Ctx.Diag->Report(SymCtx.FA->Loc, diag::err_library_missing_symbol)
             << getAnnotatedName(R, SymCtx);
       });
       return Result::Invalid;
     }
     if (DR->isInternal()) {
       Ctx.emitDiag([&]() {
-        Ctx.Diag->Report(SymCtx.FA->D->getLocation(),
-                         diag::err_library_hidden_symbol)
+        Ctx.Diag->Report(SymCtx.FA->Loc, diag::err_library_hidden_symbol)
             << getAnnotatedName(R, SymCtx);
       });
       return Result::Invalid;
@@ -306,8 +304,7 @@ DylibVerifier::Result DylibVerifier::compareVisibility(const Record *R,
       Outcome = Result::Invalid;
     }
     Ctx.emitDiag([&]() {
-      Ctx.Diag->Report(SymCtx.FA->D->getLocation(), ID)
-          << getAnnotatedName(R, SymCtx);
+      Ctx.Diag->Report(SymCtx.FA->Loc, ID) << getAnnotatedName(R, SymCtx);
     });
     return Outcome;
   }
@@ -329,15 +326,13 @@ DylibVerifier::Result DylibVerifier::compareAvailability(const Record *R,
   switch (Mode) {
   case VerificationMode::ErrorsAndWarnings:
     Ctx.emitDiag([&]() {
-      Ctx.Diag->Report(SymCtx.FA->D->getLocation(),
-                       diag::warn_header_availability_mismatch)
+      Ctx.Diag->Report(SymCtx.FA->Loc, diag::warn_header_availability_mismatch)
           << getAnnotatedName(R, SymCtx) << IsDeclAvailable << IsDeclAvailable;
     });
     return Result::Ignore;
   case VerificationMode::Pedantic:
     Ctx.emitDiag([&]() {
-      Ctx.Diag->Report(SymCtx.FA->D->getLocation(),
-                       diag::err_header_availability_mismatch)
+      Ctx.Diag->Report(SymCtx.FA->Loc, diag::err_header_availability_mismatch)
           << getAnnotatedName(R, SymCtx) << IsDeclAvailable << IsDeclAvailable;
     });
     return Result::Invalid;
@@ -353,16 +348,14 @@ bool DylibVerifier::compareSymbolFlags(const Record *R, SymbolContext &SymCtx,
                                        const Record *DR) {
   if (DR->isThreadLocalValue() && !R->isThreadLocalValue()) {
     Ctx.emitDiag([&]() {
-      Ctx.Diag->Report(SymCtx.FA->D->getLocation(),
-                       diag::err_dylib_symbol_flags_mismatch)
+      Ctx.Diag->Report(SymCtx.FA->Loc, diag::err_dylib_symbol_flags_mismatch)
           << getAnnotatedName(DR, SymCtx) << DR->isThreadLocalValue();
     });
     return false;
   }
   if (!DR->isThreadLocalValue() && R->isThreadLocalValue()) {
     Ctx.emitDiag([&]() {
-      Ctx.Diag->Report(SymCtx.FA->D->getLocation(),
-                       diag::err_header_symbol_flags_mismatch)
+      Ctx.Diag->Report(SymCtx.FA->Loc, diag::err_header_symbol_flags_mismatch)
           << getAnnotatedName(R, SymCtx) << R->isThreadLocalValue();
     });
     return false;
@@ -370,16 +363,14 @@ bool DylibVerifier::compareSymbolFlags(const Record *R, SymbolContext &SymCtx,
 
   if (DR->isWeakDefined() && !R->isWeakDefined()) {
     Ctx.emitDiag([&]() {
-      Ctx.Diag->Report(SymCtx.FA->D->getLocation(),
-                       diag::err_dylib_symbol_flags_mismatch)
+      Ctx.Diag->Report(SymCtx.FA->Loc, diag::err_dylib_symbol_flags_mismatch)
           << getAnnotatedName(DR, SymCtx) << R->isWeakDefined();
     });
     return false;
   }
   if (!DR->isWeakDefined() && R->isWeakDefined()) {
     Ctx.emitDiag([&]() {
-      Ctx.Diag->Report(SymCtx.FA->D->getLocation(),
-                       diag::err_header_symbol_flags_mismatch)
+      Ctx.Diag->Report(SymCtx.FA->Loc, diag::err_header_symbol_flags_mismatch)
           << getAnnotatedName(R, SymCtx) << R->isWeakDefined();
     });
     return false;
@@ -487,6 +478,14 @@ void DylibVerifier::setTarget(const Target &T) {
   assignSlice(T);
 }
 
+void DylibVerifier::setSourceManager(
+    IntrusiveRefCntPtr<SourceManager> SourceMgr) {
+  if (!Ctx.Diag)
+    return;
+  SourceManagers.push_back(std::move(SourceMgr));
+  Ctx.Diag->setSourceManager(SourceManagers.back().get());
+}
+
 DylibVerifier::Result DylibVerifier::verify(ObjCIVarRecord *R,
                                             const FrontendAttrs *FA,
                                             const StringRef SuperClass) {
diff --git a/clang/lib/InstallAPI/Frontend.cpp b/clang/lib/InstallAPI/Frontend.cpp
index bd7589c13e043..04d06f46d2652 100644
--- a/clang/lib/InstallAPI/Frontend.cpp
+++ b/clang/lib/InstallAPI/Frontend.cpp
@@ -23,7 +23,8 @@ std::pair<GlobalRecord *, FrontendAttrs *> FrontendRecordsSlice::addGlobal(
 
   GlobalRecord *GR =
       llvm::MachO::RecordsSlice::addGlobal(Name, Linkage, GV, Flags, Inlined);
-  auto Result = FrontendRecords.insert({GR, FrontendAttrs{Avail, D, Access}});
+  auto Result = FrontendRecords.insert(
+      {GR, FrontendAttrs{Avail, D, D->getLocation(), Access}});
   return {GR, &(Result.first->second)};
 }
 
@@ -39,8 +40,8 @@ FrontendRecordsSlice::addObjCInterface(StringRef Name, RecordLinkage Linkage,
 
   ObjCInterfaceRecord *ObjCR =
       llvm::MachO::RecordsSlice::addObjCInterface(Name, Linkage, SymType);
-  auto Result =
-      FrontendRecords.insert({ObjCR, FrontendAttrs{Avail, D, Access}});
+  auto Result = FrontendRecords.insert(
+      {ObjCR, FrontendAttrs{Avail, D, D->getLocation(), Access}});
   return {ObjCR, &(Result.first->second)};
 }
 
@@ -51,8 +52,8 @@ FrontendRecordsSlice::addObjCCategory(StringRef ClassToExtend,
                                       const Decl *D, HeaderType Access) {
   ObjCCategoryRecord *ObjCR =
       llvm::MachO::RecordsSlice::addObjCCategory(ClassToExtend, CategoryName);
-  auto Result =
-      FrontendRecords.insert({ObjCR, FrontendAttrs{Avail, D, Access}});
+  auto Result = FrontendRecords.insert(
+      {ObjCR, FrontendAttrs{Avail, D, D->getLocation(), Access}});
   return {ObjCR, &(Result.first->second)};
 }
 
@@ -67,8 +68,8 @@ std::pair<ObjCIVarRecord *, FrontendAttrs *> FrontendRecordsSlice::addObjCIVar(
     Linkage = RecordLinkage::Internal;
   ObjCIVarRecord *ObjCR =
       llvm::MachO::RecordsSlice::addObjCIVar(Container, IvarName, Linkage);
-  auto Result =
-      FrontendRecords.insert({ObjCR, FrontendAttrs{Avail, D, Access}});
+  auto Result = FrontendRecords.insert(
+      {ObjCR, FrontendAttrs{Avail, D, D->getLocation(), Access}});
 
   return {ObjCR, &(Result.first->second)};
 }
diff --git a/clang/tools/clang-installapi/ClangInstallAPI.cpp b/clang/tools/clang-installapi/ClangInstallAPI.cpp
index 0c1980ba5d628..fd71aaec59435 100644
--- a/clang/tools/clang-installapi/ClangInstallAPI.cpp
+++ b/clang/tools/clang-installapi/ClangInstallAPI.cpp
@@ -121,6 +121,7 @@ static bool run(ArrayRef<const char *> Args, const char *ProgName) {
   // Execute, verify and gather AST results.
   // An invocation is ran for each unique target triple and for each header
   // access level.
+  Records FrontendRecords;
   for (const auto &[Targ, Trip] : Opts.DriverOpts.Targets) {
     Ctx.Verifier->setTarget(Targ);
     Ctx.Slice = std::make_shared<FrontendRecordsSlice>(Trip);
@@ -131,6 +132,7 @@ static bool run(ArrayRef<const char *> Args, const char *ProgName) {
                        InMemoryFileSystem.get(), Opts.getClangFrontendArgs()))
         return EXIT_FAILURE;
     }
+    FrontendRecords.emplace_back(std::move(Ctx.Slice));
   }
 
   if (Ctx.Verifier->verifyRemainingSymbols() == DylibVerifier::Result::Invalid)