Null pointer crash when loading module with unresolved import also as a script file

• Component: JavaScriptCore
• Status: RESOLVED FIXED

[André Bargull]

svn revision: 213147

Test file, t.js:
---
import {x} from "./t.js"
---

STR:
- Start JSC shell with: ~/svn/webkit/WebKitBuild/Debug/bin/jsc -m t.js -f t.js

Crashes with:
---
Thread 1 "jsc" received signal SIGSEGV, Segmentation fault.
0x000000000046f5f0 in JSC::MarkedBlock::vm (this=0x0) at ../../Source/JavaScriptCore/heap/MarkedBlock.h:411
---

Stack trace:
---
#0  0x000000000046f5f0 in JSC::MarkedBlock::vm (this=0x0) at ../../Source/JavaScriptCore/heap/MarkedBlock.h:411
#1  0x000000000047c4fe in JSC::HeapCell::vm (this=0x0) at ../../Source/JavaScriptCore/heap/HeapCellInlines.h:67
#2  0x00007ffff68b2b32 in JSC::Interpreter::execute (this=0x7fffef5fe080, executable=0x7fffaed4c320, callFrame=0x7fffffffcd60, scope=0x0) at ../../Source/JavaScriptCore/interpreter/Interpreter.cpp:1173
#3  0x00007ffff6b9de2e in JSC::JSModuleRecord::evaluate (this=0x7fffaed500a0, exec=0x7fffffffcd60) at ../../Source/JavaScriptCore/runtime/JSModuleRecord.cpp:207
#4  0x00007ffff6b97bc7 in JSC::JSModuleLoader::evaluate (this=0x7fffaedb0190, exec=0x7fffffffcd60, key=..., moduleRecordValue=..., scriptFetcher=...)
    at ../../Source/JavaScriptCore/runtime/JSModuleLoader.cpp:238
#5  0x00007ffff6c28def in JSC::moduleLoaderPrototypeEvaluate (exec=0x7fffffffcd60) at ../../Source/JavaScriptCore/runtime/ModuleLoaderPrototype.cpp:245
...
---

[Radar WebKit Bug Importer]

<rdar://problem/30801142>

[Yusuke Suzuki]

Created attachment 303181 [details]
Patch

[Yusuke Suzuki]

Created attachment 303182 [details]
Patch

[Saam Barati]

Comment on attachment 303182 [details]
Patch

r=me

[Yusuke Suzuki]

Comment on attachment 303182 [details]
Patch

Thanks!

[WebKit Commit Bot]

Comment on attachment 303182 [details]
Patch

Clearing flags on attachment: 303182

Committed r213452: <http://trac.webkit.org/changeset/213452>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.