tree 875043ec01fe71153af47ae738fa22dd9ce7a29f
parent f71878b87b50de7d80de05ef30bf85a892f999db
author Jesse Hall <jessehall@google.com> 1506725862 -0700
committer Jesse Hall <jessehall@google.com> 1506725862 -0700

Handle glGetString returning NULL

When two contexts are shared, and one is lost/reset, the other can be
lost as well. A lost context can return NULL from glGetString. On the
first eglMakeCurrent to a context, we fetch the extension list, and
weren't checking for NULL, leading to a crash in the rare case where a
context is lost and then another context sharing with it is made
current for the first time.

Bug: 64024627
Test: dEQP-EGL.functional.robustness.reset_context.shaders.infinite_loop.shared_context_status.*
Change-Id: Ib7e1b932490ec587df159e9e461c211d3dac35d4