[LLVMbugs] [Bug 20367] New: Assertion failed: (PhysReg != VirtRegMap::NO_PHYS_REG && "Instruction uses unmapped VirtReg"), function rewrite

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Sat Jul 19 15:12:53 PDT 2014


http://llvm.org/bugs/show_bug.cgi?id=20367

            Bug ID: 20367
           Summary: Assertion failed: (PhysReg != VirtRegMap::NO_PHYS_REG
                    && "Instruction uses unmapped VirtReg"), function
                    rewrite
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: Register Allocator
          Assignee: unassignedbugs at nondot.org
          Reporter: nicolasweber at gmx.de
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

While building chromium with clang r213025:

FAILED: /Volumes/data/b/build/goma/gomacc
../../third_party/llvm-build/Release+Asserts/bin/clang++ -MMD -MF
obj/chrome/browser/sync_file_system/drive_backend_v1/browser.api_util.o.d
-DV8_DEPRECATION_WARNINGS -DBLINK_SCALE_FILTERS_AT_RECORD_TIME
-D__ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORE=0 -DCHROMIUM_BUILD
-DCR_CLANG_REVISION=213025 -DUSE_LIBJPEG_TURBO=1 -DENABLE_ONE_CLICK_SIGNIN
-DENABLE_PRE_SYNC_BACKUP -DENABLE_REMOTING=1 -DENABLE_WEBRTC=1
-DENABLE_PEPPER_CDMS -DENABLE_CONFIGURATION_POLICY -DENABLE_NOTIFICATIONS
-DENABLE_HIDPI=1 -DDISCARDABLE_MEMORY_ALWAYS_SUPPORTED_NATIVELY
-DSYSTEM_NATIVELY_SIGNALS_MEMORY_PRESSURE -DDCHECK_ALWAYS_ON=1
-DENABLE_EGLIMAGE=1 -DENABLE_TASK_MANAGER=1 -DENABLE_EXTENSIONS=1
-DENABLE_PLUGIN_INSTALLATION=1 -DENABLE_PLUGINS=1 -DENABLE_SESSION_SERVICE=1
-DENABLE_THEMES=1 -DENABLE_AUTOFILL_DIALOG=1 -DENABLE_BACKGROUND=1
-DENABLE_GOOGLE_NOW=1 -DCLD_VERSION=2 -DCLD2_DATA_SOURCE=static
-DCLD_DATA_FROM_STATIC -DENABLE_FULL_PRINTING=1 -DENABLE_PRINTING=1
-DENABLE_SPELLCHECK=1 -DENABLE_CAPTIVE_PORTAL_DETECTION=1 -DENABLE_APP_LIST=1
-DENABLE_SETTINGS_APP=1 -DENABLE_MANAGED_USERS=1 -DENABLE_SERVICE_DISCOVERY=1
-DENABLE_WIFI_BOOTSTRAPPING=1 -DNACL_WINDOWS=0 -DNACL_LINUX=0 -DNACL_OSX=1
-DNACL_ANDROID=0 -DNACL_TARGET_SUBARCH=32 -DNACL_TARGET_ARCH=x86
-DNACL_BUILD_SUBARCH=32 -DNACL_BUILD_ARCH=x86 -DFULL_SAFE_BROWSING
-DMOJO_USE_SYSTEM_IMPL -DPROTOBUF_USE_DLLS -DGOOGLE_PROTOBUF_NO_RTTI
-DGOOGLE_PROTOBUF_NO_STATIC_INITIALIZER -DAUTOFILL_ENABLE_SYNC
-DPASSWORD_MANAGER_ENABLE_SYNC
'-DPRECACHE_CONFIG_SETTINGS_URL="http://www.gstatic.com/chrome/wifiprefetch/precache_config"'
'-DPRECACHE_MANIFEST_URL_PREFIX="http://www.gstatic.com/chrome/wifiprefetch/precache_manifest_"'
-DNO_NSPR_10_SUPPORT -DNSPR_STATIC -DNSS_STATIC -DNSS_USE_STATIC_LIBS
-DUSE_UTIL_DIRECTLY -DSK_ENABLE_INST_COUNT=0 -DSK_SUPPORT_GPU=1
'-DGR_GL_CUSTOM_SETUP_HEADER="GrGLConfig_chrome.h"'
-DSK_ENABLE_LEGACY_API_ALIASING=1 -DSK_ATTR_DEPRECATED=SK_NOTHING_ARG1
-DGR_GL_IGNORE_ES3_MSAA=0 -DSK_WILL_NEVER_DRAW_PERSPECTIVE_TEXT
-DSK_SUPPORT_LEGACY_PICTURE_CLONE -DSK_SUPPORT_LEGACY_GETDEVICE
-DSK_IGNORE_ETC1_SUPPORT -DSK_IGNORE_GPU_DITHER -DSK_USE_POSIX_THREADS
-DSK_DEFERRED_CANVAS_USES_FACTORIES=1 -DU_USING_ICU_NAMESPACE=0
-DU_ENABLE_DYLOAD=0 -DU_STATIC_IMPLEMENTATION -DFEATURE_ENABLE_SSL
-DFEATURE_ENABLE_VOICEMAIL -DEXPAT_RELATIVE_PATH -DGTEST_RELATIVE_PATH
-DNO_MAIN_THREAD_WRAPPING -DNO_SOUND_SYSTEM -DOSX -DPOSIX -DLIBXML_STATIC
-DXML_STATIC
'-DI18N_ADDRESS_VALIDATION_DATA_URL="https://i18napis.appspot.com/ssl-aggregate-address/"'
-DI18N_ADDRESSINPUT_USE_BASICTYPES_OVERRIDE=1 -DWEBRTC_CHROMIUM_BUILD
-DWEBRTC_MAC -DWEBRTC_POSIX -DMESA_EGL_NO_X11_HEADERS -DHUNSPELL_STATIC
-DHUNSPELL_CHROME_CLIENT -DUSE_HUNSPELL -DUSE_CUPS -D__STDC_CONSTANT_MACROS
-D__STDC_FORMAT_MACROS -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0
-D_FORTIFY_SOURCE=2 -Igen -I../.. -Iobj/chrome/browser.gen -I../../skia/config
-I../../third_party/khronos -I../../gpu -I../../third_party/WebKit/Source
-Igen/protoc_out -I../../third_party/protobuf -I../../third_party/protobuf/src
-I../../third_party/dom_distiller_js/package/proto_gen -Igen/chrome
-Igen/components/strings -I../../third_party/WebKit
-I../../third_party/nss/nspr/pr/include -I../../third_party/nss/nspr/lib/ds
-I../../third_party/nss/nspr/lib/libc/include
-I../../third_party/nss/nss/lib/base -I../../third_party/nss/nss/lib/certdb
-I../../third_party/nss/nss/lib/certhigh
-I../../third_party/nss/nss/lib/cryptohi -I../../third_party/nss/nss/lib/dev
-I../../third_party/nss/nss/lib/freebl
-I../../third_party/nss/nss/lib/freebl/ecl -I../../third_party/nss/nss/lib/nss
-I../../third_party/nss/nss/lib/pk11wrap -I../../third_party/nss/nss/lib/pkcs7
-I../../third_party/nss/nss/lib/pki -I../../third_party/nss/nss/lib/smime
-I../../third_party/nss/nss/lib/softoken -I../../third_party/nss/nss/lib/util
-I../../third_party/skia/src/core -I../../third_party/skia/include/core
-I../../third_party/skia/include/effects -I../../third_party/skia/include/pdf
-I../../third_party/skia/include/gpu -I../../third_party/skia/include/lazy
-I../../third_party/skia/include/pathops -I../../third_party/skia/include/pipe
-I../../third_party/skia/include/ports -I../../third_party/skia/include/utils
-I../../third_party/skia/include/utils/mac -I../../skia/ext
-I../../third_party/cacheinvalidation/overrides
-I../../third_party/cacheinvalidation/src
-I../../third_party/cacheinvalidation/google/cacheinvalidation
-I../../third_party/icu/source/i18n -I../../third_party/icu/source/common
-I../../third_party/libjingle/overrides -I../../third_party/libjingle/source
-I../../third_party/webrtc/overrides -I../../testing/gtest/include
-I../../third_party -I../../third_party/webrtc
-I../../third_party/libxml/mac/include -I../../third_party/libxml/src/include
-I../../third_party/zlib -Igen/ui/resources -Igen/ui/strings
-I../../third_party/re2 -I../../third_party/expat/files/lib
-I../../third_party/leveldatabase/src/include
-I../../third_party/leveldatabase/src -I../../third_party/leveldatabase
-I../../third_party/libaddressinput/chromium/override
-I../../third_party/libaddressinput/src/cpp/include
-Igen/third_party/libaddressinput/ -I../../third_party/libyuv/include
-I../../third_party/libyuv -I../../third_party/npapi
-I../../third_party/npapi/bindings -Igen/ui/gl
-I../../third_party/mesa/src/include -I../../v8/include -Igen/webkit
-Igen/policy -I../../third_party/google_toolbox_for_mac
-I../../third_party/google_toolbox_for_mac/src
-I../../third_party/google_toolbox_for_mac/src/AppKit
-I../../third_party/google_toolbox_for_mac/src/DebugUtils
-I../../third_party/google_toolbox_for_mac/src/Foundation -isysroot
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.6.sdk
-O3 -gdwarf-2 -fvisibility=hidden -Werror -Wnewline-eof
-mmacosx-version-min=10.6 -arch i386 -Wall -Wendif-labels -Wextra
-Wno-unused-parameter -Wno-missing-field-initializers -Wheader-hygiene
-Wno-c++11-narrowing -Wno-char-subscripts -Wno-unneeded-internal-declaration
-Wno-covered-switch-default -Wstring-conversion -Wno-deprecated-register
-Wno-selector-type-mismatch -Wexit-time-destructors -std=gnu++11 -fno-rtti
-fno-exceptions -fvisibility-inlines-hidden -fno-threadsafe-statics
-fno-slp-vectorize -Xclang -load -Xclang
/Volumes/data/b/build/slave/mac_gpu/build/src/tools/clang/scripts/../../../third_party/llvm-build/Release+Asserts/lib/libFindBadConstructs.dylib
-Xclang -add-plugin -Xclang find-bad-constructs -fcolor-diagnostics
-fno-strict-aliasing  -c
../../chrome/browser/sync_file_system/drive_backend_v1/api_util.cc -o
obj/chrome/browser/sync_file_system/drive_backend_v1/browser.api_util.o
Assertion failed: (PhysReg != VirtRegMap::NO_PHYS_REG && "Instruction uses
unmapped VirtReg"), function rewrite, file
/Volumes/MacintoshHD2/src/chrome-git/src/third_party/llvm/lib/CodeGen/VirtRegMap.cpp,
line 341.
0  clang             0x0000000102181798 llvm::sys::PrintStackTrace(__sFILE*) +
40
1  clang             0x0000000102181c84 abort + 612
2  libsystem_c.dylib 0x00007fff8ef8e90a _sigtramp + 26
3  clang             0x0000000101b05f67
llvm::LiveRegMatrix::checkRegUnitInterference(llvm::LiveInterval&, unsigned
int) + 375
4  clang             0x0000000102181a36 abort + 22
5  clang             0x0000000102181a11 __assert_rtn + 81
6  clang             0x0000000101c43e37
llvm::initializeVirtRegRewriterPass(llvm::PassRegistry&) + 5687
7  clang             0x0000000101b41fdc
llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 140
8  clang             0x00000001020a5e97
llvm::FPPassManager::runOnFunction(llvm::Function&) + 583
9  clang             0x00000001020a613b
llvm::FPPassManager::runOnModule(llvm::Module&) + 43
10 clang             0x00000001020a6774
llvm::legacy::PassManagerImpl::run(llvm::Module&) + 1172
11 clang             0x00000001002344ce
clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions
const&, clang::TargetOptions const&, clang::LangOptions const&,
llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::raw_ostream*) +
7406
12 clang             0x0000000100385fd5
clang::EmitObjAction::EmitObjAction(llvm::LLVMContext*) + 1557
13 clang             0x00000001000a42d4
clang::MultiplexConsumer::HandleTranslationUnit(clang::ASTContext&) + 68
14 clang             0x000000010040f784 clang::ParseAST(clang::Sema&, bool,
bool) + 468
15 clang             0x00000001000812c3 clang::FrontendAction::Execute() + 67
16 clang             0x000000010004fec3
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 931
17 clang             0x000000010000c32c
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 4236
18 clang             0x0000000100000fc0 cc1_main(char const**, char const**,
char const*, void*) + 896
19 clang             0x000000010000738f main + 1215
20 clang             0x0000000100000c34 start + 52
Stack dump:
0.    Program arguments:
/Volumes/data/b/build/slave/mac_gpu/build/src/third_party/llvm-build/Release+Asserts/bin/clang
-cc1 -triple i386-apple-macosx10.6.0 -emit-obj -disable-free -main-file-name
api_util.cc -mrelocation-model pic -pic-level 2 -mdisable-fp-elim
-relaxed-aliasing -masm-verbose -target-cpu yonah -target-linker-version 236.4
-gdwarf-2 -dwarf-column-info -coverage-file
/Volumes/data/b/build/slave/mac_gpu/build/src/out/Release/obj/chrome/browser/sync_file_system/drive_backend_v1/browser.api_util.o
-resource-dir
/Volumes/data/b/build/slave/mac_gpu/build/src/third_party/llvm-build/Release+Asserts/bin/../lib/clang/3.5.0
-dependency-file
obj/chrome/browser/sync_file_system/drive_backend_v1/browser.api_util.o.d -MT
obj/chrome/browser/sync_file_system/drive_backend_v1/browser.api_util.o
-isysroot
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.6.sdk
-D V8_DEPRECATION_WARNINGS -D BLINK_SCALE_FILTERS_AT_RECORD_TIME -D
__ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORE=0 -D CHROMIUM_BUILD -D
CR_CLANG_REVISION=213025 -D USE_LIBJPEG_TURBO=1 -D ENABLE_ONE_CLICK_SIGNIN -D
ENABLE_PRE_SYNC_BACKUP -D ENABLE_REMOTING=1 -D ENABLE_WEBRTC=1 -D
ENABLE_PEPPER_CDMS -D ENABLE_CONFIGURATION_POLICY -D ENABLE_NOTIFICATIONS -D
ENABLE_HIDPI=1 -D DISCARDABLE_MEMORY_ALWAYS_SUPPORTED_NATIVELY -D
SYSTEM_NATIVELY_SIGNALS_MEMORY_PRESSURE -D DCHECK_ALWAYS_ON=1 -D
ENABLE_EGLIMAGE=1 -D ENABLE_TASK_MANAGER=1 -D ENABLE_EXTENSIONS=1 -D
ENABLE_PLUGIN_INSTALLATION=1 -D ENABLE_PLUGINS=1 -D ENABLE_SESSION_SERVICE=1 -D
ENABLE_THEMES=1 -D ENABLE_AUTOFILL_DIALOG=1 -D ENABLE_BACKGROUND=1 -D
ENABLE_GOOGLE_NOW=1 -D CLD_VERSION=2 -D CLD2_DATA_SOURCE=static -D
CLD_DATA_FROM_STATIC -D ENABLE_FULL_PRINTING=1 -D ENABLE_PRINTING=1 -D
ENABLE_SPELLCHECK=1 -D ENABLE_CAPTIVE_PORTAL_DETECTION=1 -D ENABLE_APP_LIST=1
-D ENABLE_SETTINGS_APP=1 -D ENABLE_MANAGED_USERS=1 -D
ENABLE_SERVICE_DISCOVERY=1 -D ENABLE_WIFI_BOOTSTRAPPING=1 -D NACL_WINDOWS=0 -D
NACL_LINUX=0 -D NACL_OSX=1 -D NACL_ANDROID=0 -D NACL_TARGET_SUBARCH=32 -D
NACL_TARGET_ARCH=x86 -D NACL_BUILD_SUBARCH=32 -D NACL_BUILD_ARCH=x86 -D
FULL_SAFE_BROWSING -D MOJO_USE_SYSTEM_IMPL -D PROTOBUF_USE_DLLS -D
GOOGLE_PROTOBUF_NO_RTTI -D GOOGLE_PROTOBUF_NO_STATIC_INITIALIZER -D
AUTOFILL_ENABLE_SYNC -D PASSWORD_MANAGER_ENABLE_SYNC -D
PRECACHE_CONFIG_SETTINGS_URL="http://www.gstatic.com/chrome/wifiprefetch/precache_config"
-D
PRECACHE_MANIFEST_URL_PREFIX="http://www.gstatic.com/chrome/wifiprefetch/precache_manifest_"
-D NO_NSPR_10_SUPPORT -D NSPR_STATIC -D NSS_STATIC -D NSS_USE_STATIC_LIBS -D
USE_UTIL_DIRECTLY -D SK_ENABLE_INST_COUNT=0 -D SK_SUPPORT_GPU=1 -D
GR_GL_CUSTOM_SETUP_HEADER="GrGLConfig_chrome.h" -D
SK_ENABLE_LEGACY_API_ALIASING=1 -D SK_ATTR_DEPRECATED=SK_NOTHING_ARG1 -D
GR_GL_IGNORE_ES3_MSAA=0 -D SK_WILL_NEVER_DRAW_PERSPECTIVE_TEXT -D
SK_SUPPORT_LEGACY_PICTURE_CLONE -D SK_SUPPORT_LEGACY_GETDEVICE -D
SK_IGNORE_ETC1_SUPPORT -D SK_IGNORE_GPU_DITHER -D SK_USE_POSIX_THREADS -D
SK_DEFERRED_CANVAS_USES_FACTORIES=1 -D U_USING_ICU_NAMESPACE=0 -D
U_ENABLE_DYLOAD=0 -D U_STATIC_IMPLEMENTATION -D FEATURE_ENABLE_SSL -D
FEATURE_ENABLE_VOICEMAIL -D EXPAT_RELATIVE_PATH -D GTEST_RELATIVE_PATH -D
NO_MAIN_THREAD_WRAPPING -D NO_SOUND_SYSTEM -D OSX -D POSIX -D LIBXML_STATIC -D
XML_STATIC -D
I18N_ADDRESS_VALIDATION_DATA_URL="https://i18napis.appspot.com/ssl-aggregate-address/"
-D I18N_ADDRESSINPUT_USE_BASICTYPES_OVERRIDE=1 -D WEBRTC_CHROMIUM_BUILD -D
WEBRTC_MAC -D WEBRTC_POSIX -D MESA_EGL_NO_X11_HEADERS -D HUNSPELL_STATIC -D
HUNSPELL_CHROME_CLIENT -D USE_HUNSPELL -D USE_CUPS -D __STDC_CONSTANT_MACROS -D
__STDC_FORMAT_MACROS -D NDEBUG -D NVALGRIND -D DYNAMIC_ANNOTATIONS_ENABLED=0 -D
_FORTIFY_SOURCE=2 -I gen -I ../.. -I obj/chrome/browser.gen -I
../../skia/config -I ../../third_party/khronos -I ../../gpu -I
../../third_party/WebKit/Source -I gen/protoc_out -I ../../third_party/protobuf
-I ../../third_party/protobuf/src -I
../../third_party/dom_distiller_js/package/proto_gen -I gen/chrome -I
gen/components/strings -I ../../third_party/WebKit -I
../../third_party/nss/nspr/pr/include -I ../../third_party/nss/nspr/lib/ds -I
../../third_party/nss/nspr/lib/libc/include -I
../../third_party/nss/nss/lib/base -I ../../third_party/nss/nss/lib/certdb -I
../../third_party/nss/nss/lib/certhigh -I
../../third_party/nss/nss/lib/cryptohi -I ../../third_party/nss/nss/lib/dev -I
../../third_party/nss/nss/lib/freebl -I
../../third_party/nss/nss/lib/freebl/ecl -I ../../third_party/nss/nss/lib/nss
-I ../../third_party/nss/nss/lib/pk11wrap -I
../../third_party/nss/nss/lib/pkcs7 -I ../../third_party/nss/nss/lib/pki -I
../../third_party/nss/nss/lib/smime -I ../../third_party/nss/nss/lib/softoken
-I ../../third_party/nss/nss/lib/util -I ../../third_party/skia/src/core -I
../../third_party/skia/include/core -I ../../third_party/skia/include/effects
-I ../../third_party/skia/include/pdf -I ../../third_party/skia/include/gpu -I
../../third_party/skia/include/lazy -I ../../third_party/skia/include/pathops
-I ../../third_party/skia/include/pipe -I ../../third_party/skia/include/ports
-I ../../third_party/skia/include/utils -I
../../third_party/skia/include/utils/mac -I ../../skia/ext -I
../../third_party/cacheinvalidation/overrides -I
../../third_party/cacheinvalidation/src -I
../../third_party/cacheinvalidation/google/cacheinvalidation -I
../../third_party/icu/source/i18n -I ../../third_party/icu/source/common -I
../../third_party/libjingle/overrides -I ../../third_party/libjingle/source -I
../../third_party/webrtc/overrides -I ../../testing/gtest/include -I
../../third_party -I ../../third_party/webrtc -I
../../third_party/libxml/mac/include -I ../../third_party/libxml/src/include -I
../../third_party/zlib -I gen/ui/resources -I gen/ui/strings -I
../../third_party/re2 -I ../../third_party/expat/files/lib -I
../../third_party/leveldatabase/src/include -I
../../third_party/leveldatabase/src -I ../../third_party/leveldatabase -I
../../third_party/libaddressinput/chromium/override -I
../../third_party/libaddressinput/src/cpp/include -I
gen/third_party/libaddressinput/ -I ../../third_party/libyuv/include -I
../../third_party/libyuv -I ../../third_party/npapi -I
../../third_party/npapi/bindings -I gen/ui/gl -I
../../third_party/mesa/src/include -I ../../v8/include -I gen/webkit -I
gen/policy -I ../../third_party/google_toolbox_for_mac -I
../../third_party/google_toolbox_for_mac/src -I
../../third_party/google_toolbox_for_mac/src/AppKit -I
../../third_party/google_toolbox_for_mac/src/DebugUtils -I
../../third_party/google_toolbox_for_mac/src/Foundation -O3 -Werror
-Wnewline-eof -Wall -Wendif-labels -Wextra -Wno-unused-parameter
-Wno-missing-field-initializers -Wheader-hygiene -Wno-c++11-narrowing
-Wno-char-subscripts -Wno-unneeded-internal-declaration
-Wno-covered-switch-default -Wstring-conversion -Wno-deprecated-register
-Wno-selector-type-mismatch -Wexit-time-destructors -std=gnu++11
-fdeprecated-macro -fdebug-compilation-dir
/Volumes/data/b/build/slave/mac_gpu/build/src/out/Release -ferror-limit 19
-fmessage-length 0 -fvisibility hidden -fvisibility-inlines-hidden
-stack-protector 1 -mstackrealign -fblocks -fno-rtti -fno-threadsafe-statics
-fobjc-runtime=macosx-fragile-10.6.0 -fobjc-subscripting-legacy-runtime
-fencode-extended-block-signature -fdiagnostics-show-option -fcolor-diagnostics
-vectorize-loops -load
/Volumes/data/b/build/slave/mac_gpu/build/src/tools/clang/scripts/../../../third_party/llvm-build/Release+Asserts/lib/libFindBadConstructs.dylib
-add-plugin find-bad-constructs -o
obj/chrome/browser/sync_file_system/drive_backend_v1/browser.api_util.o -x c++
../../chrome/browser/sync_file_system/drive_backend_v1/api_util.cc 
1.    <eof> parser at end of file
2.    Code generation
3.    Running pass 'Function Pass Manager' on module
'../../chrome/browser/sync_file_system/drive_backend_v1/api_util.cc'.
4.    Running pass 'Virtual Register Rewriter' on function
'@_ZNK16sync_file_system13drive_backend12_GLOBAL__N_119TitleAndParentQueryclEPKN11google_apis13ResourceEntryE'
clang: error: unable to execute command: Illegal instruction: 4
clang: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 3.5.0 (trunk 213025)
Target: i386-apple-darwin12.5.0
Thread model: posix
clang: note: diagnostic msg: PLEASE submit a bug report to
http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and
associated run script.
clang: note: diagnostic msg: 
********************



I'll try to get a repro (the error is from a bot), but maybe the stack is
useful already?

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