tree b7e47ad4f31d77609d8f7d8a991a108b1ed33bb2
parent 69ec09825a393af89f44b3dc5263d756b1403a7d
author Vyacheslav Egorov <vegorov@google.com> 1615822510 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1615822510 +0000

[vm] Crash on impossible GDT null errors

This CL adds code to detect situations when we hit
null error through GDT call with non-null receiver.

We achieve this by making receiver's cid part of the
GDT calling convention and checking this cid
in runtime entry responsible for throwing the null
error.

This CL is an attempt to narrow down b/179632636
and collapse various impossible crash reports
into a single native crash cluster by crashing VM
instead of throwing a null error.

TEST=tested manually

Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-linux-release-x64-try,vm-kernel-precomp-linux-release-simarm-try,vm-kernel-precomp-linux-release-simarm64-try
Change-Id: If2ed4646c4c0f403016266e4e83e296a7b234cb5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/191141
Auto-Submit: Vyacheslav Egorov <vegorov@google.com>
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>