[clang] [AST][RISCV] Preserve RISC-V intrinsic pragma in AST (PR #171981)

Tue Dec 16 21:08:49 PST 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-m68k-linux-cross` running on `suse-gary-m68k-cross` while building `clang` at step 4 "build stage 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/27/builds/20426

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 4 (build stage 1) failure: 'ninja' (failure)
...
  442 |       SemaRef.CurrentInstantiationScope = this;
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/lib/Sema/SemaTemplate.cpp: In member function ‘bool clang::Sema::CheckTemplateArgumentList(clang::TemplateDecl*, clang::TemplateParameterList*, clang::SourceLocation, clang::TemplateArgumentListInfo&, const clang::DefaultArguments&, bool, CheckTemplateArgumentInfo&, bool, bool*)’:
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/lib/Sema/SemaTemplate.cpp:5867:27: note: ‘InstScope’ declared here
 5867 |   LocalInstantiationScope InstScope(*this, true);
      |                           ^~~~~~~~~
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/lib/Sema/SemaTemplate.cpp:5846:34: note: ‘this’ declared here
 5846 |     bool *ConstraintsNotSatisfied) {
      |                                  ^
[150/451] Building CXX object tools/clang/lib/Sema/CMakeFiles/obj.clangSema.dir/SemaOpenMP.cpp.o
FAILED: tools/clang/lib/Sema/CMakeFiles/obj.clangSema.dir/SemaOpenMP.cpp.o 
/usr/bin/c++ -DCLANG_EXPORTS -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/tools/clang/lib/Sema -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/lib/Sema -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/include -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/tools/clang/include -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/include -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-dangling-reference -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -MD -MT tools/clang/lib/Sema/CMakeFiles/obj.clangSema.dir/SemaOpenMP.cpp.o -MF tools/clang/lib/Sema/CMakeFiles/obj.clangSema.dir/SemaOpenMP.cpp.o.d -o tools/clang/lib/Sema/CMakeFiles/obj.clangSema.dir/SemaOpenMP.cpp.o -c /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/lib/Sema/SemaOpenMP.cpp
In file included from /usr/include/c++/14/cassert:44,
                 from /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/ADT/PointerEmbeddedInt.h:15,
                 from /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/lib/Sema/SemaOpenMP.cpp:41:
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/lib/Sema/SemaOpenMP.cpp: In member function ‘clang::OMPClause* clang::SemaOpenMP::ActOnOpenMPUseDeviceAddrClause(llvm::ArrayRef<clang::Expr*>, const clang::OMPVarListLocTy&)’:
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/lib/Sema/SemaOpenMP.cpp:24751:27: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]
24751 |            CurDeclaration &&
      |            ~~~~~~~~~~~~~~~^~
24752 |                "Unexpected null decl for use_device_addr clause.");
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/ADT/APFloat.h:18,
                 from /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/include/clang/AST/APNumericStorage.h:12,
                 from /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/include/clang/AST/Decl.h:16,
                 from /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/include/clang/AST/Attr.h:18,
                 from /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/include/clang/Sema/SemaOpenMP.h:18,
                 from /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/lib/Sema/SemaOpenMP.cpp:14:
In destructor ‘llvm::APInt::~APInt()’,
    inlined from ‘llvm::APSInt::~APSInt()’ at /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/ADT/APSInt.h:24:21,
    inlined from ‘bool checkOMPArraySectionConstantForReduction(clang::ASTContext&, const clang::ArraySectionExpr*, bool&, llvm::SmallVectorImpl<llvm::APSInt>&)’ at /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/lib/Sema/SemaOpenMP.cpp:19960:43:
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/ADT/APInt.h:193:18: warning: ‘void operator delete [](void*)’ called on a pointer to an unallocated object ‘1’ [-Wfree-nonheap-object]
  193 |       delete[] U.pVal;
      |                  ^~~~
c++: fatal error: Killed signal terminated program cc1plus
compilation terminated.
[151/451] Building CXX object tools/clang/lib/FrontendTool/CMakeFiles/obj.clangFrontendTool.dir/ExecuteCompilerInvocation.cpp.o
[152/451] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CIndexDiagnostic.cpp.o
[153/451] Building CXX object tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTWriter.cpp.o
[154/451] Building CXX object lib/LTO/CMakeFiles/LLVMLTO.dir/LTO.cpp.o
[155/451] Building CXX object tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/LinkInModulesPass.cpp.o
[156/451] Building CXX object tools/clang/tools/extra/clang-doc/support/CMakeFiles/obj.clangDocSupport.dir/Utils.cpp.o
[157/451] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CIndexCodeCompletion.cpp.o
[158/451] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CIndexInclusionStack.cpp.o
[159/451] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CXComment.cpp.o
[160/451] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CXCursor.cpp.o
[161/451] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CIndexUSRs.cpp.o
[162/451] Building CXX object tools/clang/tools/extra/clang-tidy/CMakeFiles/obj.clangTidy.dir/ClangTidy.cpp.o
[163/451] Building CXX object lib/CodeGen/AsmPrinter/CMakeFiles/LLVMAsmPrinter.dir/AsmPrinter.cpp.o
[164/451] Building CXX object tools/clang/tools/libclang/CMakeFiles/libclang.dir/CXStoredDiagnostic.cpp.o

```

</details>

https://github.com/llvm/llvm-project/pull/171981