Fix error handling in LLVMGetBitcodeModuleInContext.

[oota-llvm.git] / lib / Bitcode / Reader / BitReader.cpp

diff --git a/lib/Bitcode/Reader/BitReader.cpp b/lib/Bitcode/Reader/BitReader.cpp
index 9b3acb5ca0a9042d7bb224351214ec9cc3752c15..2d15165dcec16ee2e82cc454964d67dc19ff41c9 100644 (file)
--- a/lib/Bitcode/Reader/BitReader.cpp
+++ b/lib/Bitcode/Reader/BitReader.cpp
@@ -8,10 +8,13 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm-c/BitReader.h"
+#include "llvm-c/Core.h"
 #include "llvm/Bitcode/ReaderWriter.h"
+#include "llvm/IR/DiagnosticPrinter.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
 #include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/raw_ostream.h"
 #include <cstring>
 #include <string>
 
@@ -26,20 +29,38 @@ LLVMBool LLVMParseBitcode(LLVMMemoryBufferRef MemBuf,
                                    OutMessage);
 }
 
+static void diagnosticHandler(const DiagnosticInfo &DI, void *C) {
+  auto *Message = reinterpret_cast<std::string *>(C);
+  raw_string_ostream Stream(*Message);
+  DiagnosticPrinterRawOStream DP(Stream);
+  DI.print(DP);
+}
+
 LLVMBool LLVMParseBitcodeInContext(LLVMContextRef ContextRef,
                                    LLVMMemoryBufferRef MemBuf,
                                    LLVMModuleRef *OutModule,
                                    char **OutMessage) {
-  ErrorOr<Module *> ModuleOrErr =
-      parseBitcodeFile(unwrap(MemBuf)->getMemBufferRef(), *unwrap(ContextRef));
-  if (std::error_code EC = ModuleOrErr.getError()) {
+  MemoryBufferRef Buf = unwrap(MemBuf)->getMemBufferRef();
+  LLVMContext &Ctx = *unwrap(ContextRef);
+
+  LLVMContext::DiagnosticHandlerTy OldDiagnosticHandler =
+      Ctx.getDiagnosticHandler();
+  void *OldDiagnosticContext = Ctx.getDiagnosticContext();
+  std::string Message;
+  Ctx.setDiagnosticHandler(diagnosticHandler, &Message, true);
+
+  ErrorOr<std::unique_ptr<Module>> ModuleOrErr = parseBitcodeFile(Buf, Ctx);
+
+  Ctx.setDiagnosticHandler(OldDiagnosticHandler, OldDiagnosticContext, true);
+
+  if (ModuleOrErr.getError()) {
     if (OutMessage)
-      *OutMessage = strdup(EC.message().c_str());
+      *OutMessage = strdup(Message.c_str());
     *OutModule = wrap((Module*)nullptr);
     return 1;
   }
 
-  *OutModule = wrap(ModuleOrErr.get());
+  *OutModule = wrap(ModuleOrErr.get().release());
   return 0;
 }
 
@@ -50,21 +71,28 @@ LLVMBool LLVMGetBitcodeModuleInContext(LLVMContextRef ContextRef,
                                        LLVMMemoryBufferRef MemBuf,
                                        LLVMModuleRef *OutM,
                                        char **OutMessage) {
+  LLVMContext &Ctx = *unwrap(ContextRef);
+  LLVMContext::DiagnosticHandlerTy OldDiagnosticHandler =
+      Ctx.getDiagnosticHandler();
+  void *OldDiagnosticContext = Ctx.getDiagnosticContext();
+
   std::string Message;
+  Ctx.setDiagnosticHandler(diagnosticHandler, &Message, true);
   std::unique_ptr<MemoryBuffer> Owner(unwrap(MemBuf));
 
-  ErrorOr<Module *> ModuleOrErr =
-      getLazyBitcodeModule(std::move(Owner), *unwrap(ContextRef));
+  ErrorOr<std::unique_ptr<Module>> ModuleOrErr =
+      getLazyBitcodeModule(std::move(Owner), Ctx);
   Owner.release();
+  Ctx.setDiagnosticHandler(OldDiagnosticHandler, OldDiagnosticContext, true);
 
-  if (std::error_code EC = ModuleOrErr.getError()) {
+  if (ModuleOrErr.getError()) {
     *OutM = wrap((Module *)nullptr);
     if (OutMessage)
-      *OutMessage = strdup(EC.message().c_str());
+      *OutMessage = strdup(Message.c_str());
     return 1;
   }
 
-  *OutM = wrap(ModuleOrErr.get());
+  *OutM = wrap(ModuleOrErr.get().release());
 
   return 0;
 
@@ -75,21 +103,3 @@ LLVMBool LLVMGetBitcodeModule(LLVMMemoryBufferRef MemBuf, LLVMModuleRef *OutM,
   return LLVMGetBitcodeModuleInContext(LLVMGetGlobalContext(), MemBuf, OutM,
                                        OutMessage);
 }
-
-/* Deprecated: Use LLVMGetBitcodeModuleInContext instead. */
-LLVMBool LLVMGetBitcodeModuleProviderInContext(LLVMContextRef ContextRef,
-                                               LLVMMemoryBufferRef MemBuf,
-                                               LLVMModuleProviderRef *OutMP,
-                                               char **OutMessage) {
-  return LLVMGetBitcodeModuleInContext(ContextRef, MemBuf,
-                                       reinterpret_cast<LLVMModuleRef*>(OutMP),
-                                       OutMessage);
-}
-
-/* Deprecated: Use LLVMGetBitcodeModule instead. */
-LLVMBool LLVMGetBitcodeModuleProvider(LLVMMemoryBufferRef MemBuf,
-                                      LLVMModuleProviderRef *OutMP,
-                                      char **OutMessage) {
-  return LLVMGetBitcodeModuleProviderInContext(LLVMGetGlobalContext(), MemBuf,
-                                               OutMP, OutMessage);
-}