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[clang] Produce a diagnostic when using an unsupported deployment target on Apple

clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl''clang' and 'clang++' user-facing binaries. Not 'clang-cl'

platform:macos

Status: Open.

#167988 In llvm/llvm-project;

· ldionne opened on Nov 14, 2025

[Matrix] [HLSL] Define a <code>fmatrix-default-layout=</code> in the Clang Driver

clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl''clang' and 'clang++' user-facing binaries. Not 'clang-cl'

HLSLHLSL Language SupportHLSL Language Support

Status: Open.

Feature

#167621 In llvm/llvm-project;

· farzonl opened on Nov 12, 2025

clang does not recognize '-passes' argument when used with '-fpass-plugin' (works in opt)

clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl''clang' and 'clang++' user-facing binaries. Not 'clang-cl'

Status: Open.

#167445 In llvm/llvm-project;

· white9ash opened on Nov 11, 2025

[clang] <code>-ibuiltininc</code> does not re-add builtin include paths if <code>-nostdinc</code> is specified

clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl''clang' and 'clang++' user-facing binaries. Not 'clang-cl'

Status: Open.

#165790 In llvm/llvm-project;

· smallp-o-p opened on Oct 30, 2025

[Clang] Compiling and linking with <code>-gdwarf</code> generates PDB on Windows

clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl''clang' and 'clang++' user-facing binaries. Not 'clang-cl'

platform:windows

Status: Open.

#165614 In llvm/llvm-project;

· Nerixyz opened on Oct 29, 2025

clang++ fails to find system headers

clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl''clang' and 'clang++' user-facing binaries. Not 'clang-cl'

platform:linux

Status: Open.

#164228 In llvm/llvm-project;

· andreas-schwab opened on Oct 20, 2025

<code>clang -lstdc++ -ccc-print-phases</code> crashed

clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl''clang' and 'clang++' user-facing binaries. Not 'clang-cl'

crashPrefer [crash-on-valid] or [crash-on-invalid]Prefer [crash-on-valid] or [crash-on-invalid]

Status: Open.

Bug

#160046 In llvm/llvm-project;

· pzzp opened on Sep 22, 2025

Unusual behavior when using "-" or "--" and using or omitting equal signs in the command line

clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl''clang' and 'clang++' user-facing binaries. Not 'clang-cl'

Status: Open.

#159961 In llvm/llvm-project;

· Yewzir opened on Sep 21, 2025

[clang] Make __declspec(novtable) available in GNU driver mode

clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl''clang' and 'clang++' user-facing binaries. Not 'clang-cl'

clang:frontendLanguage frontend issues, e.g. anything involving "Sema"Language frontend issues, e.g. anything involving "Sema"

extension:microsoft

Status: Open.

Feature

#157801 In llvm/llvm-project;

· void2012 opened on Sep 10, 2025

Clang uses the first value for <code>-ffile-prefix-map</code>, unlike GCC

clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl''clang' and 'clang++' user-facing binaries. Not 'clang-cl'

Status: Open.

#157721 In llvm/llvm-project;

· emilazy opened on Sep 9, 2025

[Feature request] clang ability to load plugin by name instead of full path

clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl''clang' and 'clang++' user-facing binaries. Not 'clang-cl'

enhancementImproving things as opposed to bug fixing, e.g. new or missing featureImproving things as opposed to bug fixing, e.g. new or missing feature

Status: Open.

Feature

#156821 In llvm/llvm-project;

· d-musique opened on Sep 4, 2025

[clang] clang doesn't load the triple as specified in binary prefix

clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl''clang' and 'clang++' user-facing binaries. Not 'clang-cl'

Status: Open.

#154910 In llvm/llvm-project;

· CendioOssman opened on Aug 22, 2025