Segfault in polly::ScopDetection::hasPossiblyDistributableLoop

[wctrl]

Error message

PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0.	Program arguments: clang -Wp,-MD,fs/exfat/.exfat_core.o.d -nostdinc -isystem /home/user/clang/build/llvm/final/lib/clang/19/include -I../arch/arm64/include -I./arch/arm64/include/generated -I../include -I../drivers/misc/mediatek/include -I./include -I../arch/arm64/include/uapi -I./arch/arm64/include/generated/uapi -I../include/uapi -I./include/generated/uapi -include ../include/linux/kconfig.h -I../fs/exfat -Ifs/exfat -D__KERNEL__ -Qunused-arguments -mlittle-endian -DKASAN_SHADOW_SCALE_SHIFT=3 -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -Werror-implicit-function-declaration -Wno-format-security -std=gnu89 --target=aarch64-linux-gnu -integrated-as -Werror=unknown-warning-option -fuse-ld=lld -fno-PIE -mno-implicit-float -DCONFIG_AS_LSE=1 -DCONFIG_VDSO32=1 -DCONFIG_CC_HAS_K_CONSTRAINT=1 -fno-asynchronous-unwind-tables -fno-pic -Wno-asm-operand-widths -DKASAN_SHADOW_SCALE_SHIFT=3 -fno-delete-null-pointer-checks -Wno-frame-address -Wno-format-truncation -Wno-format-overflow -Wno-int-in-bool-context -Wno-address-of-packed-member -Wno-tautological-compare -Wno-format -O2 -march=armv8.2-a+dotprod -mcpu=cortex-a55+crypto+crc -mllvm --polly -mllvm --polly-detect-full-functions -mllvm --polly-optimized-scops -mllvm --polly-pattern-matching-based-opts -mllvm --polly-postopts -mllvm --polly-register-tiling -mllvm --polly-reschedule -mllvm --polly-tiling -mllvm --polly-vectorizer=stripmine -mllvm --polly-stmt-granularity=store -mllvm --polly-dce-precise-steps=-1 -mllvm --polly-delicm-max-ops=0 --param=allow-store-data-races=0 -DCC_HAVE_ASM_GOTO -Wframe-larger-than=2800 -fstack-protector-strong -Wno-format-invalid-specifier -Wno-gnu -Wno-duplicate-decl-specifier -Wno-tautological-compare -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -Wdeclaration-after-statement -Wno-pointer-sign -Wno-array-bounds -Wno-empty-body -Wno-fortify-source -Wno-ignored-attributes -Wno-incompatible-pointer-types -Wno-int-conversion -Wno-misleading-indentation -Wno-non-literal-null-conversion -Wno-parentheses-equality -Wno-pointer-bool-conversion -Wno-pointer-integer-compare -Wno-pointer-to-int-cast -Wno-unused-but-set-variable -Wno-unused-function -Wno-unused-variable -fno-strict-overflow -fno-merge-all-constants -fno-stack-check -Werror=implicit-int -Werror=strict-prototypes -Werror=date-time -Werror=incompatible-pointer-types -fmacro-prefix-map=../= -Wno-initializer-overrides -Wno-unused-value -Wno-format -Wno-sign-compare -Wno-format-zero-length -Wno-uninitialized -Wno-pointer-to-enum-cast -Wno-unaligned-access -Wno-cast-function-type-strict -Wno-enum-compare-conditional -Wno-enum-enum-conversion -DTARGET_PRODUCT_MERLINCOMMON -I../drivers/misc/mediatek/include -DKBUILD_BASENAME=\"exfat_core\" -DKBUILD_MODNAME=\"exfat\" -c -o fs/exfat/.tmp_exfat_core.o ../fs/exfat/exfat_core.c
1.	<eof> parser at end of file
2.	Optimizer
3.	Running pass "function<eager-inv>(float2int,lower-constant-intrinsics,polly::CodePreparationPass,polly::FunctionToScopPassAdaptor<llvm::PassManager<Scop, ScopAnalysisManager, ScopStandardAnalysisResults &, SPMUpdater &>>,sroa<modify-cfg>,early-cse<memssa>,speculative-execution<only-if-divergent-target>,jump-threading,correlated-propagation,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,aggressive-instcombine,libcalls-shrinkwrap,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,reassociate,constraint-elimination,loop-mssa(loop-instsimplify,loop-simplifycfg,licm<no-allowspeculation>,loop-rotate<header-duplication;no-prepare-for-lto>,licm<allowspeculation>,simple-loop-unswitch<no-nontrivial;trivial>),simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop(loop-idiom,indvars,simple-loop-unswitch<no-nontrivial;trivial>,loop-deletion,loop-unroll-full),sroa<modify-cfg>,vector-combine,mldst-motion<no-split-footer-bb>,gvn<>,sccp,bdce,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,jump-threading,correlated-propagation,adce,memcpyopt,dse,move-auto-init,loop-mssa(licm<allowspeculation>),coro-elide,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;hoist-common-insts;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-unroll<O2>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)" on module "../fs/exfat/exfat_core.c"
4.	Running pass "polly::FunctionToScopPassAdaptor<llvm::PassManager<Scop, ScopAnalysisManager, ScopStandardAnalysisResults &, SPMUpdater &>>" on function "free_upcase_table"
 #0 0x00005c7684f621f5 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) Signals.cpp:0:0
 #1 0x00005c7684f62053 llvm::sys::CleanupOnSignal(unsigned long) (/home/user/clang/build/llvm/final/bin/clang-19+0x3f7b053)
 #2 0x00005c7684f2c19e (anonymous namespace)::CrashRecoveryContextImpl::HandleCrash(int, unsigned long) CrashRecoveryContext.cpp:0:0
 #3 0x00005c7684f2c31e CrashRecoverySignalHandler(int) (.llvm.1103187361377165362) CrashRecoveryContext.cpp:0:0
 #4 0x000079bd2a64c1d0 (/usr/lib/libc.so.6+0x3d1d0)
 #5 0x00005c76858b4faf polly::ScopDetection::hasPossiblyDistributableLoop(polly::ScopDetection::DetectionContext&) const ScopDetection.cpp:0:0
 #6 0x00005c76858af8d2 polly::ScopDetection::isProfitableRegion(polly::ScopDetection::DetectionContext&) const ScopDetection.cpp:0:0
 #7 0x00005c76858aef5e polly::ScopDetection::detect(llvm::Function&) ScopDetection.cpp:0:0
 #8 0x00005c76858b613a polly::ScopAnalysis::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/user/clang/build/llvm/final/bin/clang-19+0x48cf13a)
 #9 0x00005c768588e470 llvm::detail::AnalysisPassModel<llvm::Function, polly::ScopAnalysis, llvm::AnalysisManager<llvm::Function>::Invalidator>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) RegisterPasses.cpp:0:0
#10 0x00005c768310d307 llvm::AnalysisManager<llvm::Function>::getResultImpl(llvm::AnalysisKey*, llvm::Function&) (/home/user/clang/build/llvm/final/bin/clang-19+0x2126307)
#11 0x00005c768588b0bc polly::FunctionToScopPassAdaptor<llvm::PassManager<polly::Scop, llvm::AnalysisManager<polly::Scop, polly::ScopStandardAnalysisResults&>, polly::ScopStandardAnalysisResults&, polly::SPMUpdater&>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) RegisterPasses.cpp:0:0
#12 0x00005c768588b04d llvm::detail::PassModel<llvm::Function, polly::FunctionToScopPassAdaptor<llvm::PassManager<polly::Scop, llvm::AnalysisManager<polly::Scop, polly::ScopStandardAnalysisResults&>, polly::ScopStandardAnalysisResults&, polly::SPMUpdater&>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) RegisterPasses.cpp:0:0
#13 0x00005c768311214d llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/user/clang/build/llvm/final/bin/clang-19+0x212b14d)
#14 0x00005c7683111e6d llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) X86CodeGenPassBuilder.cpp:0:0
#15 0x00005c768357ec29 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/user/clang/build/llvm/final/bin/clang-19+0x2597c29)
#16 0x00005c768357ea0d llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) X86CodeGenPassBuilder.cpp:0:0
#17 0x00005c768357b399 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/user/clang/build/llvm/final/bin/clang-19+0x2594399)
#18 0x00005c7684186116 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0
#19 0x00005c768418dbe4 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/home/user/clang/build/llvm/final/bin/clang-19+0x31a6be4)
#20 0x00005c7683dc14d5 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) CodeGenAction.cpp:0:0
#21 0x00005c7682dec209 clang::ParseAST(clang::Sema&, bool, bool) (/home/user/clang/build/llvm/final/bin/clang-19+0x1e05209)
#22 0x00005c7683f44bfc clang::FrontendAction::Execute() (/home/user/clang/build/llvm/final/bin/clang-19+0x2f5dbfc)
#23 0x00005c7683f44649 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/home/user/clang/build/llvm/final/bin/clang-19+0x2f5d649)
#24 0x00005c7683f28294 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/home/user/clang/build/llvm/final/bin/clang-19+0x2f41294)
#25 0x00005c7683f2625c cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/home/user/clang/build/llvm/final/bin/clang-19+0x2f3f25c)
#26 0x00005c7683f2db48 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#27 0x00005c7685457eb9 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const::$_0>(long) Job.cpp:0:0
#28 0x00005c7684555163 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/home/user/clang/build/llvm/final/bin/clang-19+0x356e163)
#29 0x00005c7684554f93 clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const (/home/user/clang/build/llvm/final/bin/clang-19+0x356df93)
#30 0x00005c7683f2fba4 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/home/user/clang/build/llvm/final/bin/clang-19+0x2f48ba4)
#31 0x00005c7683f2f0aa clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/home/user/clang/build/llvm/final/bin/clang-19+0x2f480aa)
#32 0x00005c7683f2995d clang_main(int, char**, llvm::ToolContext const&) (/home/user/clang/build/llvm/final/bin/clang-19+0x2f4295d)
#33 0x00005c76841f74d2 main (/home/user/clang/build/llvm/final/bin/clang-19+0x32104d2)
#34 0x000079bd2a634e08 (/usr/lib/libc.so.6+0x25e08)
#35 0x000079bd2a634ecc __libc_start_main (/usr/lib/libc.so.6+0x25ecc)
#36 0x00005c7684872e05 _start (/home/user/clang/build/llvm/final/bin/clang-19+0x388be05)
clang: error: clang frontend command failed with exit code 139 (use -v to see invocation)
ClangBuiltLinux clang version 19.1.2 (https://github.com/llvm/llvm-project 7ba7d8e2f7b6445b60679da826210cdde29eaf8b)
Target: aarch64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/user/clang/build/llvm/final/bin
clang: note: diagnostic msg:
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg: /tmp/exfat_core-7f3f9e.c
clang: note: diagnostic msg: /tmp/exfat_core-7f3f9e.sh
clang: note: diagnostic msg:

********************

Files:
files.zip

By experimental way found that --polly-detect-full-functions causes crash.

[llvmbot]

@llvm/issue-subscribers-polly

Author: None (wctrl)

<details><summary>Error message</summary>

PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0.	Program arguments: clang -Wp,-MD,fs/exfat/.exfat_core.o.d -nostdinc -isystem /home/user/clang/build/llvm/final/lib/clang/19/include -I../arch/arm64/include -I./arch/arm64/include/generated -I../include -I../drivers/misc/mediatek/include -I./include -I../arch/arm64/include/uapi -I./arch/arm64/include/generated/uapi -I../include/uapi -I./include/generated/uapi -include ../include/linux/kconfig.h -I../fs/exfat -Ifs/exfat -D__KERNEL__ -Qunused-arguments -mlittle-endian -DKASAN_SHADOW_SCALE_SHIFT=3 -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -Werror-implicit-function-declaration -Wno-format-security -std=gnu89 --target=aarch64-linux-gnu -integrated-as -Werror=unknown-warning-option -fuse-ld=lld -fno-PIE -mno-implicit-float -DCONFIG_AS_LSE=1 -DCONFIG_VDSO32=1 -DCONFIG_CC_HAS_K_CONSTRAINT=1 -fno-asynchronous-unwind-tables -fno-pic -Wno-asm-operand-widths -DKASAN_SHADOW_SCALE_SHIFT=3 -fno-delete-null-pointer-checks -Wno-frame-address -Wno-format-truncation -Wno-format-overflow -Wno-int-in-bool-context -Wno-address-of-packed-member -Wno-tautological-compare -Wno-format -O2 -march=armv8.2-a+dotprod -mcpu=cortex-a55+crypto+crc -mllvm --polly -mllvm --polly-detect-full-functions -mllvm --polly-optimized-scops -mllvm --polly-pattern-matching-based-opts -mllvm --polly-postopts -mllvm --polly-register-tiling -mllvm --polly-reschedule -mllvm --polly-tiling -mllvm --polly-vectorizer=stripmine -mllvm --polly-stmt-granularity=store -mllvm --polly-dce-precise-steps=-1 -mllvm --polly-delicm-max-ops=0 --param=allow-store-data-races=0 -DCC_HAVE_ASM_GOTO -Wframe-larger-than=2800 -fstack-protector-strong -Wno-format-invalid-specifier -Wno-gnu -Wno-duplicate-decl-specifier -Wno-tautological-compare -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -Wdeclaration-after-statement -Wno-pointer-sign -Wno-array-bounds -Wno-empty-body -Wno-fortify-source -Wno-ignored-attributes -Wno-incompatible-pointer-types -Wno-int-conversion -Wno-misleading-indentation -Wno-non-literal-null-conversion -Wno-parentheses-equality -Wno-pointer-bool-conversion -Wno-pointer-integer-compare -Wno-pointer-to-int-cast -Wno-unused-but-set-variable -Wno-unused-function -Wno-unused-variable -fno-strict-overflow -fno-merge-all-constants -fno-stack-check -Werror=implicit-int -Werror=strict-prototypes -Werror=date-time -Werror=incompatible-pointer-types -fmacro-prefix-map=../= -Wno-initializer-overrides -Wno-unused-value -Wno-format -Wno-sign-compare -Wno-format-zero-length -Wno-uninitialized -Wno-pointer-to-enum-cast -Wno-unaligned-access -Wno-cast-function-type-strict -Wno-enum-compare-conditional -Wno-enum-enum-conversion -DTARGET_PRODUCT_MERLINCOMMON -I../drivers/misc/mediatek/include -DKBUILD_BASENAME=\"exfat_core\" -DKBUILD_MODNAME=\"exfat\" -c -o fs/exfat/.tmp_exfat_core.o ../fs/exfat/exfat_core.c
1.	<eof> parser at end of file
2.	Optimizer
3.	Running pass "function<eager-inv>(float2int,lower-constant-intrinsics,polly::CodePreparationPass,polly::FunctionToScopPassAdaptor<llvm::PassManager<Scop, ScopAnalysisManager, ScopStandardAnalysisResults &, SPMUpdater &>>,sroa<modify-cfg>,early-cse<memssa>,speculative-execution<only-if-divergent-target>,jump-threading,correlated-propagation,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,aggressive-instcombine,libcalls-shrinkwrap,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,reassociate,constraint-elimination,loop-mssa(loop-instsimplify,loop-simplifycfg,licm<no-allowspeculation>,loop-rotate<header-duplication;no-prepare-for-lto>,licm<allowspeculation>,simple-loop-unswitch<no-nontrivial;trivial>),simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop(loop-idiom,indvars,simple-loop-unswitch<no-nontrivial;trivial>,loop-deletion,loop-unroll-full),sroa<modify-cfg>,vector-combine,mldst-motion<no-split-footer-bb>,gvn<>,sccp,bdce,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,jump-threading,correlated-propagation,adce,memcpyopt,dse,move-auto-init,loop-mssa(licm<allowspeculation>),coro-elide,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;hoist-common-insts;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-unroll<O2>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)" on module "../fs/exfat/exfat_core.c"
4.	Running pass "polly::FunctionToScopPassAdaptor<llvm::PassManager<Scop, ScopAnalysisManager, ScopStandardAnalysisResults &, SPMUpdater &>>" on function "free_upcase_table"
 #<!-- -->0 0x00005c7684f621f5 llvm::sys::PrintStackTrace(llvm::raw_ostream&amp;, int) Signals.cpp:0:0
 #<!-- -->1 0x00005c7684f62053 llvm::sys::CleanupOnSignal(unsigned long) (/home/user/clang/build/llvm/final/bin/clang-19+0x3f7b053)
 #<!-- -->2 0x00005c7684f2c19e (anonymous namespace)::CrashRecoveryContextImpl::HandleCrash(int, unsigned long) CrashRecoveryContext.cpp:0:0
 #<!-- -->3 0x00005c7684f2c31e CrashRecoverySignalHandler(int) (.llvm.1103187361377165362) CrashRecoveryContext.cpp:0:0
 #<!-- -->4 0x000079bd2a64c1d0 (/usr/lib/libc.so.6+0x3d1d0)
 #<!-- -->5 0x00005c76858b4faf polly::ScopDetection::hasPossiblyDistributableLoop(polly::ScopDetection::DetectionContext&amp;) const ScopDetection.cpp:0:0
 #<!-- -->6 0x00005c76858af8d2 polly::ScopDetection::isProfitableRegion(polly::ScopDetection::DetectionContext&amp;) const ScopDetection.cpp:0:0
 #<!-- -->7 0x00005c76858aef5e polly::ScopDetection::detect(llvm::Function&amp;) ScopDetection.cpp:0:0
 #<!-- -->8 0x00005c76858b613a polly::ScopAnalysis::run(llvm::Function&amp;, llvm::AnalysisManager&lt;llvm::Function&gt;&amp;) (/home/user/clang/build/llvm/final/bin/clang-19+0x48cf13a)
 #<!-- -->9 0x00005c768588e470 llvm::detail::AnalysisPassModel&lt;llvm::Function, polly::ScopAnalysis, llvm::AnalysisManager&lt;llvm::Function&gt;::Invalidator&gt;::run(llvm::Function&amp;, llvm::AnalysisManager&lt;llvm::Function&gt;&amp;) RegisterPasses.cpp:0:0
#<!-- -->10 0x00005c768310d307 llvm::AnalysisManager&lt;llvm::Function&gt;::getResultImpl(llvm::AnalysisKey*, llvm::Function&amp;) (/home/user/clang/build/llvm/final/bin/clang-19+0x2126307)
#<!-- -->11 0x00005c768588b0bc polly::FunctionToScopPassAdaptor&lt;llvm::PassManager&lt;polly::Scop, llvm::AnalysisManager&lt;polly::Scop, polly::ScopStandardAnalysisResults&amp;&gt;, polly::ScopStandardAnalysisResults&amp;, polly::SPMUpdater&amp;&gt;&gt;::run(llvm::Function&amp;, llvm::AnalysisManager&lt;llvm::Function&gt;&amp;) RegisterPasses.cpp:0:0
#<!-- -->12 0x00005c768588b04d llvm::detail::PassModel&lt;llvm::Function, polly::FunctionToScopPassAdaptor&lt;llvm::PassManager&lt;polly::Scop, llvm::AnalysisManager&lt;polly::Scop, polly::ScopStandardAnalysisResults&amp;&gt;, polly::ScopStandardAnalysisResults&amp;, polly::SPMUpdater&amp;&gt;&gt;, llvm::AnalysisManager&lt;llvm::Function&gt;&gt;::run(llvm::Function&amp;, llvm::AnalysisManager&lt;llvm::Function&gt;&amp;) RegisterPasses.cpp:0:0
#<!-- -->13 0x00005c768311214d llvm::PassManager&lt;llvm::Function, llvm::AnalysisManager&lt;llvm::Function&gt;&gt;::run(llvm::Function&amp;, llvm::AnalysisManager&lt;llvm::Function&gt;&amp;) (/home/user/clang/build/llvm/final/bin/clang-19+0x212b14d)
#<!-- -->14 0x00005c7683111e6d llvm::detail::PassModel&lt;llvm::Function, llvm::PassManager&lt;llvm::Function, llvm::AnalysisManager&lt;llvm::Function&gt;&gt;, llvm::AnalysisManager&lt;llvm::Function&gt;&gt;::run(llvm::Function&amp;, llvm::AnalysisManager&lt;llvm::Function&gt;&amp;) X86CodeGenPassBuilder.cpp:0:0
#<!-- -->15 0x00005c768357ec29 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&amp;, llvm::AnalysisManager&lt;llvm::Module&gt;&amp;) (/home/user/clang/build/llvm/final/bin/clang-19+0x2597c29)
#<!-- -->16 0x00005c768357ea0d llvm::detail::PassModel&lt;llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager&lt;llvm::Module&gt;&gt;::run(llvm::Module&amp;, llvm::AnalysisManager&lt;llvm::Module&gt;&amp;) X86CodeGenPassBuilder.cpp:0:0
#<!-- -->17 0x00005c768357b399 llvm::PassManager&lt;llvm::Module, llvm::AnalysisManager&lt;llvm::Module&gt;&gt;::run(llvm::Module&amp;, llvm::AnalysisManager&lt;llvm::Module&gt;&amp;) (/home/user/clang/build/llvm/final/bin/clang-19+0x2594399)
#<!-- -->18 0x00005c7684186116 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr&lt;llvm::raw_pwrite_stream, std::default_delete&lt;llvm::raw_pwrite_stream&gt;&gt;&amp;, std::unique_ptr&lt;llvm::ToolOutputFile, std::default_delete&lt;llvm::ToolOutputFile&gt;&gt;&amp;, clang::BackendConsumer*) BackendUtil.cpp:0:0
#<!-- -->19 0x00005c768418dbe4 clang::EmitBackendOutput(clang::DiagnosticsEngine&amp;, clang::HeaderSearchOptions const&amp;, clang::CodeGenOptions const&amp;, clang::TargetOptions const&amp;, clang::LangOptions const&amp;, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr&lt;llvm::vfs::FileSystem&gt;, std::unique_ptr&lt;llvm::raw_pwrite_stream, std::default_delete&lt;llvm::raw_pwrite_stream&gt;&gt;, clang::BackendConsumer*) (/home/user/clang/build/llvm/final/bin/clang-19+0x31a6be4)
#<!-- -->20 0x00005c7683dc14d5 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&amp;) CodeGenAction.cpp:0:0
#<!-- -->21 0x00005c7682dec209 clang::ParseAST(clang::Sema&amp;, bool, bool) (/home/user/clang/build/llvm/final/bin/clang-19+0x1e05209)
#<!-- -->22 0x00005c7683f44bfc clang::FrontendAction::Execute() (/home/user/clang/build/llvm/final/bin/clang-19+0x2f5dbfc)
#<!-- -->23 0x00005c7683f44649 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&amp;) (/home/user/clang/build/llvm/final/bin/clang-19+0x2f5d649)
#<!-- -->24 0x00005c7683f28294 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/home/user/clang/build/llvm/final/bin/clang-19+0x2f41294)
#<!-- -->25 0x00005c7683f2625c cc1_main(llvm::ArrayRef&lt;char const*&gt;, char const*, void*) (/home/user/clang/build/llvm/final/bin/clang-19+0x2f3f25c)
#<!-- -->26 0x00005c7683f2db48 ExecuteCC1Tool(llvm::SmallVectorImpl&lt;char const*&gt;&amp;, llvm::ToolContext const&amp;) driver.cpp:0:0
#<!-- -->27 0x00005c7685457eb9 void llvm::function_ref&lt;void ()&gt;::callback_fn&lt;clang::driver::CC1Command::Execute(llvm::ArrayRef&lt;std::optional&lt;llvm::StringRef&gt;&gt;, std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt;&gt;*, bool*) const::$_0&gt;(long) Job.cpp:0:0
#<!-- -->28 0x00005c7684555163 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref&lt;void ()&gt;) (/home/user/clang/build/llvm/final/bin/clang-19+0x356e163)
#<!-- -->29 0x00005c7684554f93 clang::driver::CC1Command::Execute(llvm::ArrayRef&lt;std::optional&lt;llvm::StringRef&gt;&gt;, std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt;&gt;*, bool*) const (/home/user/clang/build/llvm/final/bin/clang-19+0x356df93)
#<!-- -->30 0x00005c7683f2fba4 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&amp;, clang::driver::Command const*&amp;, bool) const (/home/user/clang/build/llvm/final/bin/clang-19+0x2f48ba4)
#<!-- -->31 0x00005c7683f2f0aa clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&amp;, llvm::SmallVectorImpl&lt;std::pair&lt;int, clang::driver::Command const*&gt;&gt;&amp;) (/home/user/clang/build/llvm/final/bin/clang-19+0x2f480aa)
#<!-- -->32 0x00005c7683f2995d clang_main(int, char**, llvm::ToolContext const&amp;) (/home/user/clang/build/llvm/final/bin/clang-19+0x2f4295d)
#<!-- -->33 0x00005c76841f74d2 main (/home/user/clang/build/llvm/final/bin/clang-19+0x32104d2)
#<!-- -->34 0x000079bd2a634e08 (/usr/lib/libc.so.6+0x25e08)
#<!-- -->35 0x000079bd2a634ecc __libc_start_main (/usr/lib/libc.so.6+0x25ecc)
#<!-- -->36 0x00005c7684872e05 _start (/home/user/clang/build/llvm/final/bin/clang-19+0x388be05)
clang: error: clang frontend command failed with exit code 139 (use -v to see invocation)
ClangBuiltLinux clang version 19.1.2 (https://github.com/llvm/llvm-project 7ba7d8e2f7b6445b60679da826210cdde29eaf8b)
Target: aarch64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/user/clang/build/llvm/final/bin
clang: note: diagnostic msg:
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg: /tmp/exfat_core-7f3f9e.c
clang: note: diagnostic msg: /tmp/exfat_core-7f3f9e.sh
clang: note: diagnostic msg:

********************

</details>

Files:
files.zip

By experimental way found that --polly-detect-full-functions causes crash.

[Meinersbur]

The title is not accurate. " parser at end of file" appears in the PrettyPrintStack because it is the last action of the parser, and it it started running the optimizer passes. The error has nothing to do with the parder. If at all, the last item in the PrettyPrintStack ("Running pass "polly::FunctionToScopPassAdaptor<...") could be mentioned, which just means "Calling into Polly..."