Out-of-memory with <1KB input. Not sure if this is a bug or an expected behavior.

It is sort of expected behavior: the shader given as input does an explosion of macro expansion that causes creation of std::vector of 24'956'349 in size (that's just before it crashes on my machine).

We could add an arbitrary limit, but there will be plenty of other ways to go OOM on our translator. How important is it to avoid OOM for ClusterFuzz?

The following revision refers to this bug:
  https://chromium.googlesource.com/angle/angle/+/2bd9c4430e68c7a67c52f1e2ab9f93ac6b12249d

commit 2bd9c4430e68c7a67c52f1e2ab9f93ac6b12249d
Author: Corentin Wallez <cwallez@chromium.org>
Date: Tue Sep 20 20:39:18 2016

preprocessor: add a limit to the number of token expanded

BUG= angleproject:1522 
BUG= chromium:648074 

Change-Id: Ibf0858aaeb81933dd221ac82a49160169b48a495
Reviewed-on: https://chromium-review.googlesource.com/387211
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>

[modify] https://crrev.com/2bd9c4430e68c7a67c52f1e2ab9f93ac6b12249d/src/compiler/preprocessor/MacroExpander.cpp
[modify] https://crrev.com/2bd9c4430e68c7a67c52f1e2ab9f93ac6b12249d/src/compiler/preprocessor/MacroExpander.h

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/86dc7effdd78ad7aacdaf3af7fb8eb7e380e9f64

commit 86dc7effdd78ad7aacdaf3af7fb8eb7e380e9f64
Author: cwallez <cwallez@chromium.org>
Date: Fri Sep 23 21:21:19 2016

Roll ANGLE c287ea6..28a97ee

https://chromium.googlesource.com/angle/angle.git/+log/c287ea6..28a97ee

BUG= chromium:648031 , chromium:648135 , 648063 , 607283 , 645532 , chromium:648074 

TBR=geofflang@chromium.org

TEST=bots

CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.win:win_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel

Merge branch 'master' of https://chromium.googlesource.com/chromium/src

fuzzers: add a fuzzer for the ANGLE shader translator

BUG= angleproject:1522 

Review-Url: https://codereview.chromium.org/2364873003
Cr-Commit-Position: refs/heads/master@{#420732}

[modify] https://crrev.com/86dc7effdd78ad7aacdaf3af7fb8eb7e380e9f64/DEPS

ClusterFuzz has detected this issue as fixed in range 420114:420204.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5381550927773696

Fuzzer: libfuzzer_translator_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Out-of-memory
Crash Address: 
Crash State:
  translator_fuzzer
  
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=420114:420204

Minimized Testcase (0.73 Kb): https://cluster-fuzz.appspot.com/download/AMIfv94nr1BzmJHmV5bBksxnKBRJu3Y0XL70zRaZnrNe0PgsokZHTwniUxm3d9XzufqS8UVfrVBJceef18tZ3V6tGejR3eVttgKoH-7WhFocsW7iyrtIKkJQE9pkk52LDWa3gapf-DN_HullVY76LTUBvbhzJosC-w?testcase_id=5381550927773696

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot