[Webkit-unassigned] [Bug 158792] New: OOM Assertion failure when Function constructor cannot create source string

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=158792

            Bug ID: 158792
           Summary: OOM Assertion failure when Function constructor cannot
                    create source string
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: andre.bargull at gmail.com

SVN: rev202088
Build with: perl Tools/Scripts/build-jsc --gtk --debug


The following test case triggers this assertion error:
---
ASSERTION FAILED: !(length & is16BitStringFlag)
---


Test case:
---
var p = "a".repeat(0x7ffffff)
var r = Function(
  p, p, p, p, p,
  p, p, p, p, p,
  p, p, p, p, p,
  p, p, p, p, p
);
---


Stack trace:
---
#0  0x00007ffff6de7098 in WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:317
#1  0x0000000000440c6c in WTF::StringView::initialize (this=0x7fffffffc4d0, characters=0x7ffc45c00014 "{function anonymous(", 'a' <repeats 180 times>..., 
    length=2684354603) at ../../Source/WTF/wtf/text/StringView.h:257
#2  0x0000000000440dd8 in WTF::StringView::StringView (this=0x7fffffffc4d0, string=...) at ../../Source/WTF/wtf/text/StringView.h:285
#3  0x0000000000441f7e in JSC::StringSourceProvider::source (this=0x7ffff0dece40) at ../../Source/JavaScriptCore/parser/SourceProvider.h:96
#4  0x00000000004420ae in JSC::SourceCode::SourceCode (this=0x7fffffffc660, provider=..., firstLine=1, startColumn=1)
    at ../../Source/JavaScriptCore/parser/SourceCode.h:65
#5  0x00000000004422d0 in JSC::makeSource (source=..., url=..., startPosition=...) at ../../Source/JavaScriptCore/parser/SourceCode.h:124
#6  0x00007ffff6b60f1f in JSC::constructFunctionSkippingEvalEnabledCheck (exec=0x7fffffffca90, globalObject=0x7fffaf1e7900, args=..., functionName=..., sourceURL=..., 
    position=..., overrideLineNumber=-1, functionConstructionMode=JSC::FunctionConstructionMode::Function, newTarget=...)
    at ../../Source/JavaScriptCore/runtime/FunctionConstructor.cpp:119
#7  0x00007ffff6b609fa in JSC::constructFunction (exec=0x7fffffffca90, globalObject=0x7fffaf1e7900, args=..., functionName=..., sourceURL=..., position=..., 
    functionConstructionMode=JSC::FunctionConstructionMode::Function, newTarget=...) at ../../Source/JavaScriptCore/runtime/FunctionConstructor.cpp:86
#8  0x00007ffff6b611ea in JSC::constructFunction (exec=0x7fffffffca90, globalObject=0x7fffaf1e7900, args=..., 
    functionConstructionMode=JSC::FunctionConstructionMode::Function, newTarget=...) at ../../Source/JavaScriptCore/runtime/FunctionConstructor.cpp:137
#9  0x00007ffff6b60900 in JSC::callFunctionConstructor (exec=0x7fffffffca90) at ../../Source/JavaScriptCore/runtime/FunctionConstructor.cpp:71
...
---

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