1 files changed, 12 insertions, 1 deletions

diff --git a/indra/llimage/llimageworker.cpp b/indra/llimage/llimageworker.cpp
index 553e5cd7bf..587f25dc1b 100644
--- a/indra/llimage/llimageworker.cpp
+++ b/indra/llimage/llimageworker.cpp
@@ -58,6 +58,7 @@ private:
     BOOL mDecodedRaw;
     BOOL mDecodedAux;
     LLPointer<LLImageDecodeThread::Responder> mResponder;
+    std::string mErrorString;
 };
 
 
@@ -156,6 +157,7 @@ bool ImageRequest::processRequest()
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
     const F32 decode_time_slice = 0.f; //disable time slicing
     bool done = true;
+    mErrorString.clear();
     if (!mDecodedRaw && mFormattedImage.notNull())
     {
         // Decode primary channels
@@ -164,10 +166,13 @@ bool ImageRequest::processRequest()
             // parse formatted header
             if (!mFormattedImage->updateData())
             {
+                // Pick up errors from updateData
+                mErrorString = LLImage::getLastThreadError();
                 return true; // done (failed)
             }
             if (!(mFormattedImage->getWidth() * mFormattedImage->getHeight() * mFormattedImage->getComponents()))
             {
+                mErrorString = "Invalid image size";
                 return true; // done (failed)
             }
             if (mDiscardLevel >= 0)
@@ -181,6 +186,9 @@ bool ImageRequest::processRequest()
         done = mFormattedImage->decode(mDecodedImageRaw, decode_time_slice);
         // some decoders are removing data when task is complete and there were errors
         mDecodedRaw = done && mDecodedImageRaw->getData();
+
+        // Pick up errors from decoding
+        mErrorString = LLImage::getLastThreadError();
     }
     if (done && mNeedsAux && !mDecodedAux && mFormattedImage.notNull())
     {
@@ -193,6 +201,9 @@ bool ImageRequest::processRequest()
         }
         done = mFormattedImage->decodeChannels(mDecodedImageAux, decode_time_slice, 4, 4);
         mDecodedAux = done && mDecodedImageAux->getData();
+
+        // Pick up errors from decoding
+        mErrorString = LLImage::getLastThreadError();
     }
 
     return done;
@@ -204,7 +215,7 @@ void ImageRequest::finishRequest(bool completed)
     if (mResponder.notNull())
     {
         bool success = completed && mDecodedRaw && (!mNeedsAux || mDecodedAux);
-        mResponder->completed(success, mDecodedImageRaw, mDecodedImageAux, mRequestId);
+        mResponder->completed(success, mErrorString, mDecodedImageRaw, mDecodedImageAux, mRequestId);
     }
     // Will automatically be deleted
 }