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[SR-9419] XMLDocument constructor crashes (SIGSEGV) when passed empty string #3579

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swift-ci opened this issue Dec 6, 2018 · 0 comments
Open

[SR-9419] XMLDocument constructor crashes (SIGSEGV) when passed empty string #3579

swift-ci opened this issue Dec 6, 2018 · 0 comments
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bug Foundation

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swift-ci commented Dec 6, 2018

Previous ID SR-9419
Radar None
Original Reporter TaborKelly (JIRA User)
Type Bug
Environment

Ubuntu 18.04 (amd64) running Swift 4.2 release.

Additional Detail from JIRA
Votes 0
Component/s Foundation
Labels Bug
Assignee None
Priority Medium

md5: ea5cdd9c25750dcd3f688acf99843424

Issue Description:

The XMLDocument crashes (SIGSEGV) when passed empty string. I have created a repository that easily reproduces the issue here:
https://github.com/TaborKelly/XMLDocument

The backtrace from lldb is as follows:

(lldb) bt
* thread #​1, name = 'XMLDocument', stop reason = signal SIGSEGV: invalid address (fault address: 0x0)
  * frame #​0: 0x00007ffff7285b60 libFoundation.so`_CFXMLNodeGetPrivateData
    frame #​1: 0x00007ffff763507e libFoundation.so`Foundation.XMLNode.init(ptr: Swift.UnsafeMutableRawPointer) -> Foundation.XMLNode + 94
    frame #&#8203;2: 0x00007ffff7628317 libFoundation.so`function signature specialization <Arg[0] = Exploded> of Foundation.XMLDocument.init(data: Foundation.Data, options: Foundation.XMLNode.Options) throws -> Foundation.XMLDocument + 103
    frame #&#8203;3: 0x00007ffff76284e6 libFoundation.so`function signature specialization <Arg[0] = Exploded> of Foundation.XMLDocument.init(xmlString: Swift.String, options: Foundation.XMLNode.Options) throws -> Foundation.XMLDocument + 166
    frame #&#8203;4: 0x00007ffff7625512 libFoundation.so`Foundation.XMLDocument.__allocating_init(xmlString: Swift.String, options: Foundation.XMLNode.Options) throws -> Foundation.XMLDocument + 66
    frame #&#8203;5: 0x00005555555566b3 XMLDocument`parseData(fromString="") at XMLDocument.swift:9
    frame #&#8203;6: 0x0000555555555f51 XMLDocument`main at main.swift:8
    frame #&#8203;7: 0x00007ffff5cdeb97 libc.so.6`__libc_start_main(main=(XMLDocument`main at main.swift), argc=1, argv=0x00007fffffffdf88, init=<unavailable>, fini=<unavailable>, rtld_fini=<unavailable>, stack_end=0x00007fffffffdf78) at libc-start.c:310
    frame #&#8203;8: 0x0000555555555caa XMLDocument`_start + 42

This does not crash on Mac OS.
@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@shahmishal shahmishal transferred this issue from apple/swift May 5, 2022
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