[clang] [Clang][OpenMP] Fixed an assertion on omp taskloop transparent (PR #200663)

[Shengxin Pei via cfe-commits]

https://github.com/TPPPP72 updated https://github.com/llvm/llvm-project/pull/200663

>From c4a9be7ddbd7cc693f0075820d1cc7dabd01279b Mon Sep 17 00:00:00 2001
From: Shengxin Pei <TPPPP72 at outlook.com>
Date: Fri, 24 Jul 2026 17:41:22 +0800
Subject: [PATCH] [Clang][OpenMP] Fixed an assertion on omp taskloop
 transparent

---
 clang/docs/ReleaseNotes.md       | 1 +
 clang/lib/Sema/SemaOpenMP.cpp    | 5 +++++
 clang/test/SemaOpenMP/gh197162.c | 6 ++++++
 3 files changed, 12 insertions(+)
 create mode 100644 clang/test/SemaOpenMP/gh197162.c

diff --git a/clang/docs/ReleaseNotes.md b/clang/docs/ReleaseNotes.md
index 83a2b10d96046..de7535666f167 100644
--- a/clang/docs/ReleaseNotes.md
+++ b/clang/docs/ReleaseNotes.md
@@ -338,6 +338,7 @@ features cannot lower the translation-unit ABI level;
 
 - Fixed a constraint comparison bug in partial ordering. (#GH182671)
 - Fixed a rejected-valid case that used an explicit object parameter in an out-of-line definition of a nested class member. (#GH136472)
+- Fixed an assertion on omp taskloop transparent (#GH197162)
 
 #### Bug Fixes to Compiler Builtins
 
diff --git a/clang/lib/Sema/SemaOpenMP.cpp b/clang/lib/Sema/SemaOpenMP.cpp
index 5b59eacb3eea8..c07dd23a94af8 100644
--- a/clang/lib/Sema/SemaOpenMP.cpp
+++ b/clang/lib/Sema/SemaOpenMP.cpp
@@ -17926,6 +17926,11 @@ OMPClause *SemaOpenMP::ActOnOpenMPTransparentClause(Expr *ImpexTypeArg,
                                                     SourceLocation EndLoc) {
   Stmt *HelperValStmt = nullptr;
   OpenMPDirectiveKind DKind = DSAStack->getCurrentDirective();
+
+  if (!isAllowedClauseForDirective(DKind, OMPC_transparent,
+                                   getLangOpts().OpenMP))
+    return nullptr;
+
   OpenMPDirectiveKind CaptureRegion = getOpenMPCaptureRegionForClause(
       DKind, OMPC_transparent, getLangOpts().OpenMP);
   if (CaptureRegion != OMPD_unknown &&
diff --git a/clang/test/SemaOpenMP/gh197162.c b/clang/test/SemaOpenMP/gh197162.c
new file mode 100644
index 0000000000000..ffdf2ec3c3d8e
--- /dev/null
+++ b/clang/test/SemaOpenMP/gh197162.c
@@ -0,0 +1,6 @@
+// RUN: %clang_cc1 -fopenmp -fsyntax-only -verify %s
+
+void foo() {
+#pragma omp taskloop transparent // expected-error {{unexpected OpenMP clause 'transparent' in directive '#pragma omp taskloop'}}
+    for(int i = 0; i < 2; i++);
+}