angle: prevent huge allocations when GL_MAX_VERTEX_ATTRIBS fails
I'm not sure why yet, but when using angle in skia,
getIntegerv(GL_MAX_VERTEX_ATTRIBS, &maxVertexAttribs) sometimes fails,
and when that happens we attempt to allocate and array with the size of
maxVertexAttribs, which is uninitialized, which could be huge.
Prevent this by initializing the variable.
Also sweep through other similar calls and ensure that these use
initialized values (test code has not been updated)
BUG=skia:4380
Change-Id: If1f3cf72f2b2829ad3933637af8778d574a20f61
Reviewed-on: https://chromium-review.googlesource.com/307239
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tryjob-Request: Jamie Madill <jmadill@chromium.org>
Tryjob-Request: Dian Xiang <dianx@google.com>
Tested-by: Hendrik Wagenaar <hendrikw@chromium.org>
diff --git a/src/libANGLE/renderer/gl/VertexArrayGL.cpp b/src/libANGLE/renderer/gl/VertexArrayGL.cpp
index 6227a51..7085663 100644
--- a/src/libANGLE/renderer/gl/VertexArrayGL.cpp
+++ b/src/libANGLE/renderer/gl/VertexArrayGL.cpp
@@ -50,7 +50,7 @@
mFunctions->genVertexArrays(1, &mVertexArrayID);
// Set the cached vertex attribute array size
- GLint maxVertexAttribs;
+ GLint maxVertexAttribs = 0;
mFunctions->getIntegerv(GL_MAX_VERTEX_ATTRIBS, &maxVertexAttribs);
mAppliedAttributes.resize(maxVertexAttribs);
}