forked from mirrors/gecko-dev
b1e5578002
In mozilla::freestanding::patched_NtMapViewOfSection, the DLL blocklist code relies on implicit assumptions about how LoadLibrary(Ex)W and Thread32Next work internally. Some of these assumptions turned out to be false on Windows 7. This led to crash spikes with 115 release; first in bug 1837242, and then later in bug 1842368. After dealing with the crash spikes, we realized that some blocklist gtests are still failing on Windows 7, due to such wrong assumptions. So, in bug 1842088, we are changing the assumptions. This patch adds a dedicated cppunit test to test these assumptions in isolation. It is easier to run than blocklist gtests, and should lead to easier diagnostics in case the assumptions break in the future. This test also checks the Thread32Next assumptions, which protect us against the crash from bug 1733532. Depends on D183530 Differential Revision: https://phabricator.services.mozilla.com/D183757 |
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