[BUG] Clang segfaulted

[qwandor-google]

Description

Clang segfaulted and told me to file a bug here.

Stack dump:
0. Program arguments: /usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9 -cc1 -triple aarch64-none-unknown-eabi -emit-llvm-bc -flto -flto-unit -disable-free -disable-llvm-verifier -discard-value-names -main-file-name memory_sharing.c -mrelocation-model pic -pic-level 1 -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases -ffreestanding -fuse-init-array -target-cpu cortex-a57 -target-feature +neon -target-feature +crc -target-feature +crypto -target-feature +fp-armv8 -target-feature +sha2 -target-feature +aes -target-feature +strict-align -target-abi aapcs -fallow-half-arguments-and-returns -dwarf-column-info -debug-info-kind=limited -dwarf-version=4 -debugger-tuning=gdb -ffunction-sections -fdata-sections -coverage-notes-file /usr/local/google/home/qwandor/hafnium/hafnium/out/reference/aem_v8a_fvp_vm_clang/obj/test/vmapi/primary_with_secondaries/obj/test/vmapi/primary_with_secondaries/primary_with_secondaries_test_vm.elf.memory_sharing.gcno -nostdsysteminc -nobuiltininc -resource-dir /usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/lib64/clang/9.0.3 -dependency-file aem_v8a_fvp_vm_clang/obj/test/vmapi/primary_with_secondaries/obj/test/vmapi/primary_with_secondaries/primary_with_secondaries_test_vm.elf.memory_sharing.o.d -MT aem_v8a_fvp_vm_clang/obj/test/vmapi/primary_with_secondaries/obj/test/vmapi/primary_with_secondaries/primary_with_secondaries_test_vm.elf.memory_sharing.o -isystem /usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/lib64/clang/9.0.3/include -isystem /usr/local/google/home/qwandor/hafnium/hafnium/inc/system -D VM_TOOLCHAIN=1 -D GIC_VERSION=3 -D GICD_BASE=0x2f000000 -D GICR_BASE=0x2f100000 -D HEAP_PAGES=0 -D MAX_CPUS=8 -D MAX_VMS=0 -D LOG_LEVEL=LOG_LEVEL_INFO -I ../../inc -I ../../inc/vmapi -I ../../src/arch/aarch64/inc -I aem_v8a_fvp_vm_clang/gen/offset_size_header -I ../../test/vmapi/primary_with_secondaries/inc -I ../../src/arch/aarch64 -I ../../test/inc -O2 -Wall -Wpedantic -Werror -std=c11 -fdebug-compilation-dir /usr/local/google/home/qwandor/hafnium/hafnium/out/reference -ferror-limit 19 -fmessage-length 0 -stack-protector 3 -fno-builtin -fno-signed-char -fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp -o aem_v8a_fvp_vm_clang/obj/test/vmapi/primary_with_secondaries/obj/test/vmapi/primary_with_secondaries/primary_with_secondaries_test_vm.elf.memory_sharing.o -x c ../../test/vmapi/primary_with_secondaries/memory_sharing.c -faddrsig

1. ../../test/vmapi/primary_with_secondaries/memory_sharing.c:153:31: current parser token ')'
2. ../../test/vmapi/primary_with_secondaries/memory_sharing.c:139:1: parsing function body 'check_cannot_donate_memory'
3. ../../test/vmapi/primary_with_secondaries/memory_sharing.c:139:1: in compound statement ('{}')
4. ../../test/vmapi/primary_with_secondaries/memory_sharing.c:143:40: in compound statement ('{}')
   #0 0x00000000025a7a05 llvm::sys::PrintStackTrace(llvm::raw_ostream&) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x25a7a05)
   Clang3.8 cross-compile linker issues libc (undefined references) #1 0x00000000025a63ce llvm::sys::RunSignalHandlers() (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x25a63ce)
   ndk-gdb fails on OS X #2 0x00000000025a7eb8 (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x25a7eb8)
   ndk-gdb.py fails #3 0x00007f5caf948520 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x13520)
   ndk-gdb.py --project option treats ~/... as a relative path #4 0x0000000003a0c511 clang::Expr::isDefaultArgument() const (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x3a0c511)
   Unknown argument -mandroid #5 0x000000000368db2e (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x368db2e)
   asan_device_setup error bricks phone #6 0x0000000003681494 (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x3681494)
   no renderscript headers/library in r11 #7 0x000000000367eea7 (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x367eea7)
   clang __thread caused linker error #8 0x000000000367a36b (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x367a36b)
   Clang not compiled with OpenMP support #9 0x0000000003669c6f clang::Sema::CorrectDelayedTyposInExpr(clang::Expr*, clang::VarDecl*, llvm::function_ref<clang::ActionResult<clang::Expr*, true> (clang::Expr*)>) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x3669c6f)
   error: undefined reference to '__atomic_exchange_4' #10 0x000000000361cf0b clang::Sema::BuildResolvedCallExpr(clang::Expr*, clang::NamedDecl*, clang::SourceLocation, llvm::ArrayRefclang::Expr*, clang::SourceLocation, clang::Expr*, bool, clang::CallExpr::ADLCallKind) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x361cf0b)
   Support for _POSIX_THREAD_SAFE_FUNCTIONS #11 0x000000000360ee53 clang::Sema::ActOnCallExpr(clang::Scope*, clang::Expr*, clang::SourceLocation, llvm::MutableArrayRefclang::Expr*, clang::SourceLocation, clang::Expr*, bool) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x360ee53)
   ld.bfd 2.25.51 packaged with NDK r11 produces unsupported R_ARM_COPY relocation #12 0x00000000033d293d clang::Parser::ParsePostfixExpressionSuffix(clang::ActionResult<clang::Expr*, true>) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33d293d)
   No support for debugging library projects #13 0x00000000033d4160 clang::Parser::ParseCastExpression(bool, bool, bool&, clang::Parser::TypeCastState, bool) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33d4160)
   Using precompiled header causes compilation error of tagged files #14 0x00000000033d263a clang::Parser::ParseCastExpression(bool, bool, clang::Parser::TypeCastState, bool) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33d263a)
   Compile error when including <complex> #15 0x00000000033d18fb clang::Parser::ParseRHSOfBinaryExpression(clang::ActionResult<clang::Expr*, true>, clang::prec::Level) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33d18fb)
   Compile error when using clang and precompiled headers #16 0x00000000033d1699 clang::Parser::ParseExpression(clang::Parser::TypeCastState) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33d1699)
   r11: libc++_static.a contains symbols in libc.a (causes multiple definition error) #17 0x00000000033a736e clang::Parser::ParseExprStatement() (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33a736e)
   Extraction instructions are wrong #18 0x00000000033a6983 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::AllowedConstructsKind, clang::SourceLocation*, clang::Parser::ParsedAttributesWithRange&) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33a6983)
   r11: some commands removed from NDK_ROOT #19 0x00000000033a6790 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::AllowedConstructsKind, clang::SourceLocation*) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33a6790)
   ndk-stack does not work with 64-bit binaries #20 0x00000000033ab323 clang::Parser::ParseCompoundStatementBody(bool) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33ab323)
   Clang produces much larger binaries than GCC #21 0x00000000033aaa6a clang::Parser::ParseCompoundStatement(bool, unsigned int) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33aaa6a)
   NDK r11 for Linux size / hash mismatch #22 0x00000000033a6a08 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::AllowedConstructsKind, clang::SourceLocation*, clang::Parser::ParsedAttributesWithRange&) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33a6a08)
   NDK r11 undefined reference #23 0x00000000033a6790 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::AllowedConstructsKind, clang::SourceLocation*) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33a6790)
   ndk-stack file is missing #24 0x00000000033a66c0 clang::Parser::ParseStatement(clang::SourceLocation*, bool) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33a66c0)
   NDK 2.0.0 fails to installs as part of Android Studio 1.5.1 (Download finished with wrong size) #25 0x00000000033a90d4 clang::Parser::ParseForStatement(clang::SourceLocation*) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33a90d4)
   Why did you deprecate GCC? #26 0x00000000033a6ab2 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::AllowedConstructsKind, clang::SourceLocation*, clang::Parser::ParsedAttributesWithRange&) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33a6ab2)
   Why is native code compiled with -fno-strict-aliasing? #27 0x00000000033a6790 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::AllowedConstructsKind, clang::SourceLocation*) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33a6790)
   Unable to use Clang as part of Android Studio #28 0x00000000033ab323 clang::Parser::ParseCompoundStatementBody(bool) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33ab323)
   r11b: ndk-which dosen't work #29 0x00000000033ac049 clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33ac049)
   Missing 64 bit FILE stream functions #30 0x00000000033963df clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33963df)
   armeabi libatomic.a uses ifuncs #31 0x00000000033c3eb9 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x33c3eb9)
   clang doesn't make the difference between UL & ULL sufixes #32 0x0000000003395dc9 clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x3395dc9)
   Cannot find module with tag 'cpufeatures' in import path #33 0x0000000003395acd clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x3395acd)
   clang doesn't export explicit specializations function templates #34 0x0000000003394ad6 clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x3394ad6)
   Arm gdb missing #35 0x0000000003394394 clang::Parser::ParseTopLevelDecl(clang::OpaquePtrclang::DeclGroupRef&) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x3394394)
   ndk r11b __cxxabi_config still missing #36 0x0000000003390f92 clang::ParseAST(clang::Sema&, bool, bool) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x3390f92)
   Issues with autoconf & libtool #37 0x0000000002aad345 clang::FrontendAction::Execute() (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x2aad345)
   Clang toolchains are still named *-clang3.6 #38 0x0000000002a50818 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x2a50818)
   libc++_shared (both hard float abi variants) fail to load properly #39 0x0000000002b1ed15 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x2b1ed15)
   No way of detecting the exact version of the NDK programmatically #40 0x00000000019c09a4 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x19c09a4)
   make-standalone-toolchain.sh doesn't work with Cygwin #41 0x00000000019bcfd1 main (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x19bcfd1)
   ndk r11b libc.so files don't contain all the symbols that r10e libc.so files did #42 0x00007f5caf536bbb __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26bbb)
   r11 clang: undefined reference to 'dladdr' #43 0x00000000019bc029 _start (/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin/clang-9+0x19bc029)
   clang-9: error: unable to execute command: Segmentation fault
   clang-9: error: clang frontend command failed due to signal (use -v to see invocation)
   Android (5484270 based on r353983c) clang version 9.0.3 (https://android.googlesource.com/toolchain/clang 745b335211bb9eadfa6aa6301f84715cee4b37c5) (https://android.googlesource.com/toolchain/llvm 60cf23e54e46c807513f7a36d0a7b777920b5881) (based on LLVM 9.0.3svn)
   Target: aarch64-none-unknown-eabi
   Thread model: posix
   InstalledDir: /usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/bin
   clang-9: note: diagnostic msg: PLEASE submit a bug report to https://github.com/android-ndk/ndk/issues and include the crash backtrace, preprocessed source, and associated run script.
   clang-9: note: diagnostic msg:

---

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-9: note: diagnostic msg: /tmp/memory_sharing-7baa26.c
clang-9: note: diagnostic msg: /tmp/memory_sharing-7baa26.sh
clang-9: note: diagnostic msg:

---

[32/859] CC aem_v8a_fvp_vm_clang/obj/test/vmapi/primary_with_secondaries/obj/test/vmapi/primary_with_secondaries/primary_with_secondaries_test_vm.elf.perfmon.o
FAILED: aem_v8a_fvp_vm_clang/obj/test/vmapi/primary_with_secondaries/obj/test/vmapi/primary_with_secondaries/primary_with_secondaries_test_vm.elf.perfmon.o
clang -MMD -MF aem_v8a_fvp_vm_clang/obj/test/vmapi/primary_with_secondaries/obj/test/vmapi/primary_with_secondaries/primary_with_secondaries_test_vm.elf.perfmon.o.d -DVM_TOOLCHAIN=1 -DGIC_VERSION=3 -DGICD_BASE=0x2f000000 -DGICR_BASE=0x2f100000 -DHEAP_PAGES=0 -DMAX_CPUS=8 -DMAX_VMS=0 -DLOG_LEVEL=LOG_LEVEL_INFO -I../../inc -I../../inc/vmapi -I../../src/arch/aarch64/inc -Iaem_v8a_fvp_vm_clang/gen/offset_size_header -I../../test/vmapi/primary_with_secondaries/inc -I../../src/arch/aarch64 -I../../test/inc -ffunction-sections -fdata-sections -flto -fno-builtin -ffreestanding -fpic -mcpu=cortex-a57+fp -mstrict-align -target aarch64-none-eabi -fcolor-diagnostics -nostdinc -isystem/usr/local/google/home/qwandor/hafnium/hafnium/prebuilts/linux-x64/clang/lib64/clang/9.0.3/include -isystem/usr/local/google/home/qwandor/hafnium/hafnium/inc/system -g -Wall -O2 -Wpedantic -Werror -fstack-protector-all -std=c11 -c ../../test/vmapi/primary_with_secondaries/perfmon.c -o aem_v8a_fvp_vm_clang/obj/test/vmapi/primary_with_secondaries/obj/test/vmapi/primary_with_secondaries/primary_with_secondaries_test_vm.elf.perfmon.o

Environment Details

• NDK Version: Clang prebuilt from https://android.googlesource.com/platform/prebuilts/clang/host/linux-x86/+/master/clang-r353983c/
• Build system: GN
• Host OS: Linux 5.2.17-1rodete3-amd64
• ABI: aarch64-none-eabi
• NDK API level: N/A
• Device API level: N/A

Preprocessed source and run script:
memory_sharing-7baa26.zip

[pirama-arumuga-nainar]

This is fixed in r21, in particular, https://android.googlesource.com/platform/prebuilts/clang/host/linux-x86/+/refs/heads/master/clang-r365631c1/ in r21b.

With the r21b clang, I get the errors (unlike the crash, which is a segfault when Clang attempts to suggest fixes/corrections). I recall seeing a similar crash earlier but I don't think we need to track that down since this is fixed in the latest NDK.