Make msg() and msg_with_backtrace() private (pytorch#37094)

Summary:
Pull Request resolved: pytorch#37094

Signed-off-by: Edward Z. Yang <ezyang@fb.com>

Test Plan: Imported from OSS

Differential Revision: D21202892

Pulled By: ezyang

fbshipit-source-id: d59e6bffabd90cc734056bdce2cd1fe63262fab8

Author: ezyang

c10/test/util/logging_test.cpp

@@ -34,7 +34,7 @@ TEST(LoggingTest, TestEnforceEquals) {
     // This should never be triggered.
     ADD_FAILURE();
   } catch (const ::c10::Error& err) {
-    EXPECT_NE(err.msg().find("5 vs 6"), string::npos);
+    EXPECT_NE(std::string(err.what()).find("5 vs 6"), string::npos);
   }
 
   // arguments are expanded only once

c10/util/Exception.h

@@ -58,11 +58,6 @@ class C10_API Error : public std::exception {
 
   void AppendMessage(const std::string& msg);
 
-  // Compute the full message from msg_ and msg_without_backtrace_
-  // TODO: Maybe this should be private
-  std::string msg() const;
-  std::string msg_without_backtrace() const;
-
   const std::vector<std::string>& msg_stack() const {
     return msg_stack_;
   }
@@ -80,6 +75,11 @@ class C10_API Error : public std::exception {
   const char* what_without_backtrace() const noexcept {
     return msg_without_backtrace_.c_str();
   }
+
+ private:
+  // Compute the full message from msg_ and msg_without_backtrace_
+  std::string msg() const;
+  std::string msg_without_backtrace() const;
 };
 
 class C10_API WarningHandler {

caffe2/core/operator.cc

@@ -580,7 +580,7 @@ TensorShapes InferBlobShapesAndTypes(
         }
 
       } catch (::caffe2::EnforceNotMet& enf) {
-        LOG(ERROR) << "Shape inference error: " << enf.msg();
+        LOG(ERROR) << "Shape inference error: " << enf.what();
         LOG(ERROR) << "Operator: " << ProtoDebugString(op) << std::endl;
         LOG(ERROR) << "Returning empty results.";
 

caffe2/core/operator_test.cc

@@ -114,14 +114,14 @@ TEST(OperatorTest, ExceptionWorks) {
     // This should not happen - exception should throw above.
     LOG(FATAL) << "This should not happen.";
   } catch (const EnforceNotMet& err) {
-    LOG(INFO) << err.msg();
+    LOG(INFO) << err.what();
   }
   try {
     op->RunAsync();
     // This should not happen - exception should throw above.
     LOG(FATAL) << "This should not happen.";
   } catch (const EnforceNotMet& err) {
-    LOG(INFO) << err.msg();
+    LOG(INFO) << err.what();
   }
 }
 

caffe2/mobile/contrib/ios/ios_caffe.cc

@@ -17,10 +17,6 @@ Caffe2IOSPredictor* MakeCaffe2Predictor(const std::string& init_net_str,
   try {
     predictor = Caffe2IOSPredictor::NewCaffe2IOSPredictor(
         init_net, predict_net, disableMultithreadProcessing, allowMetalOperators);
-  } catch (const caffe2::EnforceNotMet& e) {
-    std::string error = e.msg();
-    errorMessage.swap(error);
-    return NULL;
   } catch (const std::exception& e) {
     std::string error = e.what();
     errorMessage.swap(error);

caffe2/mobile/contrib/ios/ios_caffe_predictor.cc

@@ -57,10 +57,6 @@ void Caffe2IOSPredictor::run(const Tensor& inData, Tensor& outData, std::string&
   caffe2::Predictor::TensorList output_vec;
   try {
     predictor_(input_vec, &output_vec);
-  } catch (const caffe2::EnforceNotMet& e) {
-    std::string error = e.msg();
-    errorMessage.swap(error);
-    return;
   } catch (const std::exception& e) {
     std::string error = e.what();
     errorMessage.swap(error);

caffe2/opt/bound_shape_inferencer.cc

@@ -820,7 +820,7 @@ void BoundShapeInferencer::InferCommonOp(const OperatorDef& op) {
     }
   } catch (const caffe2::EnforceNotMet& e) {
     LOG(ERROR) << "Enforce not met while inferring shapes for " << op.type()
-               << ": " << e.msg() << " first output: " << op.output(0);
+               << ": " << e.what() << " first output: " << op.output(0);
   } catch (const std::exception& e) {
     LOG(WARNING) << "Caught exception while inferring shapes for " << op.type()
                  << ": " << e.what() << " first output: " << op.output(0);

torch/csrc/jit/runtime/exception_message.h

@@ -20,7 +20,7 @@ inline std::ostream& operator<<(
     const ExceptionMessage& msg) {
   auto c10_error = dynamic_cast<const c10::Error*>(&msg.e_);
   if (c10_error) {
-    out << c10_error->msg_without_backtrace();
+    out << c10_error->what_without_backtrace();
   } else {
     out << msg.e_.what();
   }