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[clang-cl] Inherited constructors dll export discrepancy compared to MSVC

clang-cl`clang-cl` driver. Don't use for other compiler parts`clang-cl` driver. Don't use for other compiler parts

Status: Open.

#162640 In llvm/llvm-project;

· poretga99 opened on Oct 9, 2025

clang-cl does not respect /I include directores if they are also in the INCLUDE environment variable

clang-cl`clang-cl` driver. Don't use for other compiler parts`clang-cl` driver. Don't use for other compiler parts

Status: Open.

#162115 In llvm/llvm-project;

· davidritter opened on Oct 6, 2025

Spurious clang-cl warnings compiling atomics for ARM64EC

backend:AArch64

clang-cl`clang-cl` driver. Don't use for other compiler parts`clang-cl` driver. Don't use for other compiler parts

clang:diagnosticsNew/improved warning or error message in Clang, but not in clang-tidy or static analyzerNew/improved warning or error message in Clang, but not in clang-tidy or static analyzer

platform:windows

Status: Open.

#159229 In llvm/llvm-project;

· skoulik opened on Sep 17, 2025

[clang-cl] Failure to compile with /clang:-save-temps

clang-cl`clang-cl` driver. Don't use for other compiler parts`clang-cl` driver. Don't use for other compiler parts

Status: Open.

#155940 In llvm/llvm-project;

· R-Goc opened on Aug 28, 2025

[clang][driver][MSVC] <code>clang-cl</code>'s handling of <code>/external:W0</code> is different from that of MSVC

clang-cl`clang-cl` driver. Don't use for other compiler parts`clang-cl` driver. Don't use for other compiler parts

diverges-from:msvcDoes the clang frontend diverge from msvc on this issueDoes the clang frontend diverge from msvc on this issue

Status: Open.

#155297 In llvm/llvm-project;

· uditagarwal97 opened on Aug 25, 2025

[Feature request] Can clang-cl provide the necessary VCRuntime headers required by Windows SDK?

clang-cl`clang-cl` driver. Don't use for other compiler parts`clang-cl` driver. Don't use for other compiler parts

clang:headersHeaders provided by Clang, e.g. for intrinsicsHeaders provided by Clang, e.g. for intrinsics

Status: Open.

Feature

#152648 In llvm/llvm-project;

· fithisux opened on Aug 8, 2025

Support for /Zc:preprocessor in clang-cl

clang-cl`clang-cl` driver. Don't use for other compiler parts`clang-cl` driver. Don't use for other compiler parts

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

diverges-from:msvcDoes the clang frontend diverge from msvc on this issueDoes the clang frontend diverge from msvc on this issue

Status: Open.

Feature

#147304 In llvm/llvm-project;

· evg656e opened on Jul 7, 2025

CI tests do not detect <code>clang_cl</code> tests that would break on non-Windows test hosts

clang-cl`clang-cl` driver. Don't use for other compiler parts`clang-cl` driver. Don't use for other compiler parts

test-suite

Status: Open.

#145713 In llvm/llvm-project;

· sivadeilra opened on Jun 25, 2025

[clang-cl] <code>constexpr</code> fields cannot reference DLL exported symbols unlike with MSVC cl

clang-cl`clang-cl` driver. Don't use for other compiler parts`clang-cl` driver. Don't use for other compiler parts

diverges-from:msvcDoes the clang frontend diverge from msvc on this issueDoes the clang frontend diverge from msvc on this issue

Status: Open.

#145400 In llvm/llvm-project;

· andrurogerz opened on Jun 23, 2025

[clang-cl][Windows] After setting the manifest configuration, the app cannot start!

clang-cl`clang-cl` driver. Don't use for other compiler parts`clang-cl` driver. Don't use for other compiler parts

clang:to-be-triagedShould not be used for new issuesShould not be used for new issues

Status: Open.

#143119 In llvm/llvm-project;

· jiangxinhaha opened on Jun 6, 2025

Crash when doing a type trait

clang-cl`clang-cl` driver. Don't use for other compiler parts`clang-cl` driver. Don't use for other compiler parts

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

incompleteIssue not complete (e.g. missing a reproducer, build arguments, etc.)Issue not complete (e.g. missing a reproducer, build arguments, etc.)

Status: Open.

Bug

#142270 In llvm/llvm-project;

· McKillroy opened on May 31, 2025

clang-cl rejects address of constinit dllimport variable in consteval constructor call

clang-cl`clang-cl` driver. Don't use for other compiler parts`clang-cl` driver. Don't use for other compiler parts

constevalC++20 constevalC++20 consteval

Status: Open.

#136756 In llvm/llvm-project;

· EpicRobertMillar opened on Apr 22, 2025