Disable nested exception printing for Windows

thk123 · thk123 · commit 9e2811a6a6bb · 2018-04-20T11:40:27.000+01:00
Due to bug in the VS2013 C++ compiler, using std::rethrow_if_nested or
std::nested_exception is not supported. This disables trying to unwrap the
exception and just prints a warning saying the nested exceptionc couldn't be
printed.

Fixup windows workaround
diff --git a/src/util/unwrap_nested_exception.cpp b/src/util/unwrap_nested_exception.cpp
@@ -35,7 +35,15 @@ std::string unwrap_exception(const std::exception &e, int level)
 
   try
   {
+#ifndef _MSC_VER
     std::rethrow_if_nested(e);
+#else
+    // TODO(tkiley): Nested exception logging not supported on windowsdue to bug
+    // TODO(tkiley): in MSVC++ Compiler:
+    // TODO(tkiley): https://blogs.msdn.microsoft.com/vcblog/2016/01/22/vs-2015-update-2s-stl-is-c17-so-far-feature-complete
+    message_stream
+      << "\nwarning: Nested exception printing not supported on Windows";
+#endif
   }
   catch(const std::exception &e)
   {

Original file line number	Diff line number	Diff line change
`@@ -35,7 +35,15 @@ std::string unwrap_exception(const std::exception &e, int level)`
`35`	`35`
`36`	`36`	`try`
`37`	`37`	`{`
	`38`	`+#ifndef _MSC_VER`
`38`	`39`	`std::rethrow_if_nested(e);`
	`40`	`+#else`
	`41`	`+ // TODO(tkiley): Nested exception logging not supported on windowsdue to bug`
	`42`	`+ // TODO(tkiley): in MSVC++ Compiler:`
	`43`	`+ // TODO(tkiley): https://blogs.msdn.microsoft.com/vcblog/2016/01/22/vs-2015-update-2s-stl-is-c17-so-far-feature-complete`
	`44`	`+ message_stream`
	`45`	`+ << "\nwarning: Nested exception printing not supported on Windows";`
	`46`	`+#endif`
`39`	`47`	`}`
`40`	`48`	`catch(const std::exception &e)`
`41`	`49`	`{`