open the php file will crash the editor

[ljyf5593]

• VSCode Version: Code - Insiders 1.20.0-insider (08ec160, 2017-12-15T05:15:38.886Z)
• OS Version: Windows_NT x64 10.0.16299
• Extensions:

Extension	Author (truncated)	Version
project-manager	ale	0.23.1
vscode-intelephense-client	bme	0.8.2
php-debug	fel	1.12.1
rest-client	hum	0.16.1
Go	luk	0.6.69
sublime-keybindings	ms-	3.0.3
php-docblocker	nei	1.3.2
code-settings-sync	Sha	2.8.7
vscode-multiclip	sle	0.1.3
JavaScriptSnippets	xab	1.5.0

---

Steps to Reproduce:

1. open the test.php file
2. crash

test.php file

<?php
$img = "data:image/jpeg;base64,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Reproduces without extensions: Yes/No

[mxschmitt]

• VSCode Version: Code - Insiders 1.20.0-insider (08ec160, 2017-12-15T05:15:38.886Z)
• OS Version: Windows_NT x64 6.1.7601
• Extensions:

Extension	Author (truncated)	Version
markdown-checkbox	bie	0.0.5
vscode-markdownlint	Dav	0.12.0
vscode-eslint	dba	1.4.3
githistory	don	0.2.3
xml	Dot	1.9.2
gitlens	eam	6.4.0
tslint	eg2	1.0.24
vscode-npm-script	eg2	0.3.3
vscode-abap	lar	0.1.0
Go	luk	0.6.69
postscript	max	1.0.0
code-beautifier	mic	1.7.2
debugger-for-chrome	msj	4.0.0
vscode-docker	Pet	0.0.22
vscode-icons	rob	7.19.0
vscode-table-formatter	shu	1.2.1
addDocComments	ste	0.0.8
html-preview-vscode	tht	0.1.1
vscode-import-cost	wix	2.5.1

I can confirm this bug. The window will freeze and after a few seconds the message appears:

[bmewburn]

• VSCode Version: Code 1.18.1 (929bacb, 2017-11-16T18:34:22.110Z)
• OS Version: Linux x64 4.9.0-4-amd64
• Extensions: Extensions are disabled

---

I'm still on 1.18.1 and get the same. vscode-textmate endless loop?

[roblourens]

Also reproes with latest grammar. Atom handles it fine. @aeschli I don't know where to start debugging this?

[ljyf5593]

may be the php syntax highlight tigger this bug. if rename the test.php to test.js or other language is fine.

[roblourens]

That's what I expect.

[roblourens]

We spend all of our time creating an OnigString

[aeschli]

@alexandrudima Looks like an issue in https://github.com/Microsoft/vscode-textmate.

[alexdima]

Probably PHP has a regex that is very very slow on this particular string. One could debug by editing the oniguruma C++ code and logging every regex search call.

[sean-mcmanus]

FYI, I get a similar freeze (infinite processing) when opening "C:\Program Files\Microsoft VS Code Insiders\resources\app\out\vs\workbench\node\extensionHostProcess.js" or /usr/share/code/resources/app/out/vs/workbench/node/extensionHostProcess.js. It seems to involve onig_scanner.node , but I don't have the symbols.

I logged #42117 (not sure if it's a duplicate).

[aeschli]

The regex that causes the freeze is
(?i)([a-z_\x{7f}-\x{7fffffff}\\][a-z0-9_\x{7f}-\x{7fffffff}\\]*)(?=\s*::)
Removing the (?i) or removing \x{7f}-\x{7fffffff} fixes the issue.

Interstingly it works in Atom, so maybe there is some trick we miss in vscode-textmate. I created microsoft/vscode-textmate#59

@roblourens As a workaround I suggest to massage the regex to remove (?i) and add A-Z instead

[roblourens]

Thanks for investigating @aeschli!

I'm curious, did you find it by building Oniguruma, or were you able to find it another way, by bisecting the grammar or something?

[roblourens]

And this very similar regex doesn't trigger it, which is interesting: (?i)(::)\\s*([a-z_\\x{7f}-\\x{7fffffff}][a-z0-9_\\x{7f}-\\x{7fffffff}]*)\\s*(\\()

[aeschli]

@roblourens: @alexandrudima showed me how to add debug statements to oniguruma:

• edit vscode/node_modules/oniguruma/src/onig-reg-exp.cc
• on line 52 (above onig_search(...)) insert printf("Searching for %s in %s\n", source_.c_str(), data+position);
• in node_modules/oniguruma run node-gyp build (you might have to also run npm install -g node-gyp)
• run /script/code.sh and check the shell for output

[roblourens]

Ok, sounds straightforward enough, thanks.