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Title: C# 14: Null conditional assignments. by michaelnebel · Pull Request #21158 · github/codeql · GitHub

Open Graph Title: C# 14: Null conditional assignments. by michaelnebel · Pull Request #21158 · github/codeql

X Title: C# 14: Null conditional assignments. by michaelnebel · Pull Request #21158 · github/codeql

Description: In this PR, we: Add support for C# 14 null conditional assignments. While the extractor already supported this feature, updates to the C# control flow implementation were needed. Simplify the cont...

Open Graph Description: In this PR, we: Add support for C# 14 null conditional assignments. While the extractor already supported this feature, updates to the C# control flow implementation were needed. Simplify the cont...

X Description: In this PR, we: Add support for C# 14 null conditional assignments. While the extractor already supported this feature, updates to the C# control flow implementation were needed. Simplify the cont...

Opengraph URL: https://github.com/github/codeql/pull/21158

X: @github

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Jan 14, 2026 https://patch-diff.githubusercontent.com/github/codeql/pull/21158#ref-pullrequest-3789010153
C# 14: Null conditional assignment. #21118 https://patch-diff.githubusercontent.com/github/codeql/pull/21118
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January 16, 2026 11:53https://patch-diff.githubusercontent.com/github/codeql/pull/21158#commits-pushed-9894993
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C#: Add CFG support for null conditional assignments and include eg. …https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/98949937ddcfdb098f79bac530122b318a184e7b
9894993https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/98949937ddcfdb098f79bac530122b318a184e7b
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C#: Update test expected output.https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/b061c4d08330643be317c5ffee06ab4489e6b09e
b061c4dhttps://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/b061c4d08330643be317c5ffee06ab4489e6b09e
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C#: Add some null conditional assignments CFG tests.https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/0bf0cbae8fbff9e5eac811286ed319d731d50ffc
0bf0cbahttps://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/0bf0cbae8fbff9e5eac811286ed319d731d50ffc
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C#: Update test expected output.https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/4ba89230db80291255b3a0b97f135259b580bd0b
4ba8923https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/4ba89230db80291255b3a0b97f135259b580bd0b
https://patch-diff.githubusercontent.com/michaelnebel
C#: Add a tests for MaybeNullExpr.https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/f0135e93c5a5368527042a83a43cfdd323e33e8f
f0135e9https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/f0135e93c5a5368527042a83a43cfdd323e33e8f
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C#: Take null conditional assignments into account in MaybeNullExpr.https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/5942edf2d9a23303020bf55183557841b6c4f1fd
5942edfhttps://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/5942edf2d9a23303020bf55183557841b6c4f1fd
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C#: Update test expected output.https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/ab432ec2e93b0e7b8832b23ddb5c218767866c4b
ab432echttps://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/ab432ec2e93b0e7b8832b23ddb5c218767866c4b
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C#: Add change-note.https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/812fdbe412edd5b7c92b5ac3bd73d3426c08b377
812fdbehttps://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/812fdbe412edd5b7c92b5ac3bd73d3426c08b377
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C#: Add field access for out assignments in the CFG.https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/3d988e8e94d8f1f1506bfbb24e8879e2065ae05e
3d988e8https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/3d988e8e94d8f1f1506bfbb24e8879e2065ae05e
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C#: Exclude the field access cases from missing argument call.https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/bd1c6e6352f5bff39f27bc17e07b78a144cfeb31
bd1c6e6https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/bd1c6e6352f5bff39f27bc17e07b78a144cfeb31
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C#: Add tests for out writeacceses.https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/86198e3c4366b787bef16d712803cb8dbef17240
86198e3https://patch-diff.githubusercontent.com/github/codeql/pull/21158/commits/86198e3c4366b787bef16d712803cb8dbef17240
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