MAINT-5011: Try to enrich catch (...) logging throughout viewer.

Turns out we have a surprising number of catch (...) clauses in the viewer
code base. If all we currently do is

    LL_ERRS() << "unknown exception" << LL_ENDL;

then call CRASH_ON_UNHANDLED_EXCEPTION() instead. If what we do is

    LL_WARNS() << "unknown exception" << LL_ENDL;

then call LOG_UNHANDLED_EXCEPTION() instead.

Since many places need LOG_UNHANDLED_EXCEPTION() and nobody catches
LLContinueError yet, eliminate LLContinueError& parameter from
LOG_UNHANDLED_EXCEPTION(). This permits us to use the same log message as
CRASH_ON_UNHANDLED_EXCEPTION(), just with a different severity level.

Where a catch (...) clause actually provides contextual information, or makes
an error string, add boost::current_exception_diagnostic_information() to try
to figure out actual exception class and message.

4 files changed, 12 insertions, 4 deletions

diff --git a/indra/newview/llaccountingcostmanager.cpp b/indra/newview/llaccountingcostmanager.cpp
index 92a5413adb..a4a54cf8fb 100644
--- a/indra/newview/llaccountingcostmanager.cpp
+++ b/indra/newview/llaccountingcostmanager.cpp
@@ -31,6 +31,7 @@
 #include "llcoros.h"
 #include "lleventcoro.h"
 #include "llcorehttputil.h"
+#include "llexception.h"
 #include <algorithm>
 #include <iterator>
 
@@ -160,7 +161,7 @@ void LLAccountingCostManager::accountingCostCoro(std::string url,
     }
     catch (...)
     {
-        LL_WARNS() << "Caught unknown exception." << LL_ENDL;
+        LOG_UNHANDLED_EXCEPTION();
     }
 
     mPendingObjectQuota.clear();
diff --git a/indra/newview/llappcorehttp.cpp b/indra/newview/llappcorehttp.cpp
index dbcae57de7..7ec041c02e 100644
--- a/indra/newview/llappcorehttp.cpp
+++ b/indra/newview/llappcorehttp.cpp
@@ -30,6 +30,7 @@
 
 #include "llappviewer.h"
 #include "llviewercontrol.h"
+#include "llexception.h"
 
 #include <openssl/x509_vfy.h>
 #include <openssl/ssl.h>
@@ -551,6 +552,7 @@ LLCore::HttpStatus LLAppCoreHttp::sslVerify(const std::string &url,
 	}
 	catch (...)
 	{
+		LOG_UNHANDLED_EXCEPTION();
 		// any other odd error, we just handle as a connect error.
 		result = LLCore::HttpStatus(LLCore::HttpStatus::EXT_CURL_EASY, CURLE_SSL_CONNECT_ERROR);
 	}
diff --git a/indra/newview/llsecapi.cpp b/indra/newview/llsecapi.cpp
index 933f7bb16e..6ca1e63417 100644
--- a/indra/newview/llsecapi.cpp
+++ b/indra/newview/llsecapi.cpp
@@ -121,6 +121,7 @@ LLSD LLCredential::getLoginParams()
 	}
 	catch (...)
 	{
+		LOG_UNHANDLED_EXCEPTION();
 		// we could have corrupt data, so simply return a null login param if so
 		LL_WARNS("AppInit") << "Invalid credential" << LL_ENDL;
 	}
diff --git a/indra/newview/llsechandler_basic.cpp b/indra/newview/llsechandler_basic.cpp
index 183a625382..54396cb9a4 100644
--- a/indra/newview/llsechandler_basic.cpp
+++ b/indra/newview/llsechandler_basic.cpp
@@ -38,6 +38,7 @@
 #include "llexception.h"
 #include <vector>
 #include <ios>
+#include <boost/exception/diagnostic_information.hpp>
 #include <openssl/ossl_typ.h>
 #include <openssl/x509.h>
 #include <openssl/x509v3.h>
@@ -618,7 +619,8 @@ void LLBasicCertificateStore::load_from_file(const std::string& filename)
 				}
 				catch (...)
 				{
-					LL_WARNS("SECAPI") << "Failure creating certificate from the certificate store file." << LL_ENDL;
+					LL_WARNS("SECAPI") << "Failure creating certificate from the certificate store file: "
+									   << boost::current_exception_diagnostic_information() << LL_ENDL;
 				}
 				X509_free(cert_x509);
 				cert_x509 = NULL;
@@ -1365,7 +1367,8 @@ void LLSecAPIBasicHandler::_writeProtectedData()
 	}
 	catch (...)
 	{
-		LL_WARNS() << "LLProtectedDataException(Error writing Protected Data Store)" << LL_ENDL;
+		LL_WARNS() << "LLProtectedDataException(Error writing Protected Data Store): "
+				   << boost::current_exception_diagnostic_information() << LL_ENDL;
 		// it's good practice to clean up any secure information on error
 		// (even though this file isn't really secure.  Perhaps in the future
 		// it may be, however.
@@ -1394,7 +1397,8 @@ void LLSecAPIBasicHandler::_writeProtectedData()
 	catch (...)
 	{
 		LL_WARNS() << "LLProtectedDataException(Error renaming '" << tmp_filename
-                   << "' to '" << mProtectedDataFilename << "')" << LL_ENDL;
+				   << "' to '" << mProtectedDataFilename << "'): "
+				   << boost::current_exception_diagnostic_information() << LL_ENDL;
 		// it's good practice to clean up any secure information on error
 		// (even though this file isn't really secure.  Perhaps in the future
 		// it may be, however.