1 files changed, 69 insertions, 3 deletions

diff --git a/indra/newview/lltexturecache.cpp b/indra/newview/lltexturecache.cpp
index 2a0d961952..633e025478 100644
--- a/indra/newview/lltexturecache.cpp
+++ b/indra/newview/lltexturecache.cpp
@@ -615,7 +615,7 @@ bool LLTextureCacheRemoteWorker::doWrite()
 			if(idx >= 0)
 			{
 				// write to the fast cache.
-				if(!mCache->writeToFastCache(idx, mRawImage, mRawDiscardLevel))
+				if(!mCache->writeToFastCache(mID, idx, mRawImage, mRawDiscardLevel))
 				{
 					LL_WARNS() << "writeToFastCache failed" << LL_ENDL;
 					mDataSize = -1; // failed
@@ -1998,8 +1998,48 @@ LLPointer<LLImageRaw> LLTextureCache::readFromFastCache(const LLUUID& id, S32& d
 	return raw;
 }
 
+#if LL_WINDOWS
+
+static const U32 STATUS_MSC_EXCEPTION = 0xE06D7363; // compiler specific
+
+U32 exception_dupe_filter(U32 code, struct _EXCEPTION_POINTERS *exception_infop)
+{
+    if (code == STATUS_MSC_EXCEPTION)
+    {
+        // C++ exception, go on
+        return EXCEPTION_CONTINUE_SEARCH;
+    }
+    else
+    {
+        // handle it
+        return EXCEPTION_EXECUTE_HANDLER;
+    }
+}
+
+//due to unwinding
+void dupe(LLPointer<LLImageRaw> &raw)
+{
+    raw = raw->duplicate();
+}
+
+void logExceptionDupplicate(LLPointer<LLImageRaw> &raw)
+{
+    __try
+    {
+        dupe(raw);
+    }
+    __except (exception_dupe_filter(GetExceptionCode(), GetExceptionInformation()))
+    {
+        // convert to C++ styled exception
+        char integer_string[32];
+        sprintf(integer_string, "SEH, code: %lu\n", GetExceptionCode());
+        throw std::exception(integer_string);
+    }
+}
+#endif
+
 //return the fast cache location
-bool LLTextureCache::writeToFastCache(S32 id, LLPointer<LLImageRaw> raw, S32 discardlevel)
+bool LLTextureCache::writeToFastCache(LLUUID image_id, S32 id, LLPointer<LLImageRaw> raw, S32 discardlevel)
 {
 	//rescale image if needed
 	if (raw.isNull() || raw->isBufferInvalid() || !raw->getData())
@@ -2027,13 +2067,39 @@ bool LLTextureCache::writeToFastCache(S32 id, LLPointer<LLImageRaw> raw, S32 dis
 		if(w * h *c > 0) //valid
 		{
 			//make a duplicate to keep the original raw image untouched.
-			raw = raw->scaled(w, h);
+
+            try
+            {
+#if LL_WINDOWS
+                // Temporary diagnostics for scale/duplicate crash
+                logExceptionDupplicate(raw);
+#else
+                raw = raw->duplicate();
+#endif
+            }
+            catch (...)
+            {
+                removeFromCache(image_id);
+                LL_ERRS() << "Failed to cache image: " << image_id
+                    << " local id: " << id
+                    << " Exception: " << boost::current_exception_diagnostic_information()
+                    << " Image new width: " << w
+                    << " Image new height: " << h
+                    << " Image new components: " << c
+                    << " Image discard difference: " << i
+                    << LL_ENDL;
+
+                return false;
+            }
+
 			if (raw->isBufferInvalid())
 			{
 				LL_WARNS() << "Invalid image duplicate buffer" << LL_ENDL;
 				return false;
 			}
 
+			raw->scale(w, h);
+
 			discardlevel += i ;
 		}
 	}