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swift-symbolgraph-extract crashes when trying to emit the 'Swift' module #61531

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tayloraswift opened this issue Oct 10, 2022 · 3 comments · Fixed by #62825 or #62834
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swift-symbolgraph-extract crashes when trying to emit the 'Swift' module #61531

tayloraswift opened this issue Oct 10, 2022 · 3 comments · Fixed by #62825 or #62834
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. SymbolGraphGen The swiftSymbolGraphGen library, responsible for gathering and emitting symbol graphs.

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@tayloraswift
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we used to be able to generate the symbolgraph for the standard library with:

swift symbolgraph-extract \
    -target x86_64-unknown-linux-gnu \
    -output-dir . \
    -module-name Swift

which worked fine all through the winter, spring, and summer.

but now it just crashes the toolchain:

$ swift symbolgraph-extract -target x86_64-unknown-linux-gnu -output-dir . -module-name Swift
swift-symbolgraph-extract: /home/build-user/llvm-project/llvm/include/llvm/ADT/SmallVector.h:291: llvm::SmallVectorTemplateCommon::reference llvm::SmallVectorTemplateCommon<const swift::ProtocolCompositionType *, void>::back() [T = const swift::ProtocolCompositionType *]: Assertion `!empty()' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.      Program arguments: /home/ec2-user/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2022-10-03-a/usr/bin/swift-symbolgraph-extract -target x86_64-unknown-linux-gnu -output-dir . -module-name Swift
1.      Swift version 5.8-dev (LLVM c3aebe50177cd03, Swift 3f020375e568042)
@tayloraswift tayloraswift added the bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. label Oct 10, 2022
@tayloraswift
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i tested the nightlies from the past month and found that the most recent toolchain that does not crash is swift-DEVELOPMENT-SNAPSHOT-2022-09-12-a. we apparently lost the ability to generate symbolgraphs for the standard library starting with DEVELOPMENT-SNAPSHOT-2022-09-22-a.

@LucianoPAlmeida LucianoPAlmeida added the SymbolGraphGen The swiftSymbolGraphGen library, responsible for gathering and emitting symbol graphs. label Oct 11, 2022
theMomax added a commit to theMomax/swift that referenced this issue Jan 4, 2023
@theMomax
fix swiftlang#61531 swift-symbolgraph-extract crashes when trying to …
3724b66 
…emit the 'Swift' module

fix a crash in symbol graph generation caused by an empty SmallVector access while expanding protocol compositions during conformance expansion for extension block symbols
@theMomax theMomax mentioned this issue Jan 4, 2023
Merged
theMomax added a commit to theMomax/swift that referenced this issue Jan 4, 2023
@theMomax
fix swiftlang#61531 swift-symbolgraph-extract crashes when trying to …
49fe057 
…emit the 'Swift' module

fix a crash in symbol graph generation caused by an empty SmallVector access while expanding protocol compositions during conformance expansion for extension block symbols
@theMomax theMomax mentioned this issue Jan 4, 2023
Merged
QuietMisdreavus pushed a commit that referenced this issue Jan 6, 2023
@theMomax
fix #61531 swift-symbolgraph-extract crashes when trying to emit the …
1937dee 
…'Swift' module (#62834)

fix a crash in symbol graph generation caused by an empty SmallVector access while expanding protocol compositions during conformance expansion for extension block symbols

rdar://103322385
QuietMisdreavus pushed a commit that referenced this issue Jan 6, 2023
@theMomax
fix #61531 swift-symbolgraph-extract crashes when trying to emit the …
8c6fe1c 
…'Swift' module (#62825)

fix a crash in symbol graph generation caused by an empty SmallVector access while expanding protocol compositions during conformance expansion for extension block symbols

rdar://103322385
@QuietMisdreavus
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@Kelvin13 It looks like there should be nightly toolchains with #62825 in them now; can you double-check that this was fixed?

@tayloraswift
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yes, this is now fixed in swift-5.8-DEVELOPMENT-SNAPSHOT-2023-01-09-a. thank you!!

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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. SymbolGraphGen The swiftSymbolGraphGen library, responsible for gathering and emitting symbol graphs.
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@tayloraswift @QuietMisdreavus @LucianoPAlmeida