commit 386dfc049baa400c13e4e98727d4c04d0242b7b8
author vandebo@chromium.org <vandebo@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> Tue Apr 17 22:31:52 2012 +0000
committer vandebo@chromium.org <vandebo@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> Tue Apr 17 22:31:52 2012 +0000
tree b874dcd52dbce252abf9a1fdcea596c31e68cdcc
parent c39c8674c94dba8b1ffe938cd99c825320cc1475

[PDF] Handle failures of matrix inversion

Previously reviewed in https://codereview.appspot.com/6033047.  Rolled back
because of unrelated fixed-point bugs.

Review URL: https://codereview.appspot.com/6052051

git-svn-id: http://skia.googlecode.com/svn/trunk@3715 2bbb7eff-a529-9590-31e7-b0007b416f81

src/pdf/SkPDFFormXObject.cpp

diff --git a/src/pdf/SkPDFFormXObject.cpp b/src/pdf/SkPDFFormXObject.cpp
index f368834..c32ea44 100644
--- a/src/pdf/SkPDFFormXObject.cpp
+++ b/src/pdf/SkPDFFormXObject.cpp
@@ -37,6 +37,8 @@
     if (!device->initialTransform().isIdentity()) {
         SkMatrix inverse;
         if (!device->initialTransform().invert(&inverse)) {
+            // The initial transform should be invertible.
+            SkASSERT(false);
             inverse.reset();
         }
         insert("Matrix", SkPDFUtils::MatrixToArray(inverse))->unref();