From 17382b40fae13629d0a7c77806bd9e73972f061d Mon Sep 17 00:00:00 2001
From: Sunny King <sunnyking9999@gmail.com>
Date: Fri, 30 Mar 2012 23:41:08 +0100
Subject: [PATCH] PPCoin: Stack trace dump for ReadCompactSize() exception

---
 src/makefile.unix |    2 +-
 src/serialize.h   |   13 ++++++++++---
 src/util.cpp      |   23 +++++++++++++++++++----
 src/util.h        |   11 +++++++++--
 4 files changed, 39 insertions(+), 10 deletions(-)

diff --git a/src/makefile.unix b/src/makefile.unix
index 22a5f8f..3aced5b 100644
--- a/src/makefile.unix
+++ b/src/makefile.unix
@@ -138,7 +138,7 @@ obj/nogui/%.o: %.cpp
 	  rm -f $(@:%.o=%.d)
 
 ppcoind: $(OBJS:obj/%=obj/nogui/%)
-	$(CXX) $(xCXXFLAGS) -o $@ $^ $(LDFLAGS) $(LIBS)
+	$(CXX) $(xCXXFLAGS) -rdynamic -o $@ $^ $(LDFLAGS) $(LIBS)
 
 obj/test/%.o: test/%.cpp
 	$(CXX) -c $(xCXXFLAGS) -MMD -o $@ $<
diff --git a/src/serialize.h b/src/serialize.h
index 78cff43..8357c2e 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -1,5 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2011 The Bitcoin developers
+// Copyright (c) 2012 The PPCoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
 #ifndef BITCOIN_SERIALIZE_H
@@ -186,8 +187,14 @@ template<typename Stream> inline void Unserialize(Stream& s, bool& a, int, int=0
 
 
 
-
-
+#ifndef THROW_WITH_STACKTRACE
+#define THROW_WITH_STACKTRACE(exception)  \
+{                                         \
+    LogStackTrace();                      \
+    throw (exception);                    \
+}
+void LogStackTrace();
+#endif
 
 //
 // Compact size
@@ -265,7 +272,7 @@ uint64 ReadCompactSize(Stream& is)
         nSizeRet = xSize;
     }
     if (nSizeRet > (uint64)MAX_SIZE)
-        throw std::ios_base::failure("ReadCompactSize() : size too large");
+        THROW_WITH_STACKTRACE(std::ios_base::failure("ReadCompactSize() : size too large"));
     return nSizeRet;
 }
 
diff --git a/src/util.cpp b/src/util.cpp
index e0ed34c..1082899 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -1,6 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2011 The Bitcoin developers
-// Copyright (c) 2011 The PPCoin developers
+// Copyright (c) 2011-2012 The PPCoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
 #include "headers.h"
@@ -13,6 +13,10 @@
 #include <boost/interprocess/sync/interprocess_recursive_mutex.hpp>
 #include <boost/foreach.hpp>
 
+#ifndef WIN32
+#include <execinfo.h>
+#endif
+
 using namespace std;
 using namespace boost;
 
@@ -154,7 +158,7 @@ int GetRandInt(int nMax)
 
 
 
-
+static FILE* fileout = NULL;
 
 inline int OutputDebugStringF(const char* pszFormat, ...)
 {
@@ -170,8 +174,6 @@ inline int OutputDebugStringF(const char* pszFormat, ...)
     else
     {
         // print to debug.log
-        static FILE* fileout = NULL;
-
         if (!fileout)
         {
             char pszFile[MAX_PATH+100];
@@ -681,6 +683,19 @@ void PrintException(std::exception* pex, const char* pszThread)
     throw;
 }
 
+void LogStackTrace() {
+    printf("\n\n******* exception encountered *******\n");
+    if (fileout)
+    {
+#ifndef WIN32
+        void* pszBuffer[32];
+        size_t size;
+        size = backtrace(pszBuffer, 32);
+        backtrace_symbols_fd(pszBuffer, size, fileno(fileout));
+#endif
+    }
+}
+
 void ThreadOneMessageBox(string strMessage)
 {
     // Skip message boxes if one is already open
diff --git a/src/util.h b/src/util.h
index 1ef0e6f..467b417 100644
--- a/src/util.h
+++ b/src/util.h
@@ -1,5 +1,6 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2011 The Bitcoin developers
+// Copyright (c) 2012 The PPCoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
 #ifndef BITCOIN_UTIL_H
@@ -139,8 +140,14 @@ inline const char* _(const char* psz)
 }
 #endif
 
-
-
+#ifndef THROW_WITH_STACKTRACE
+#define THROW_WITH_STACKTRACE(exception)  \
+{                                         \
+    LogStackTrace();                      \
+    throw (exception);                    \
+}
+void LogStackTrace();
+#endif
 
 
 
-- 
1.7.1