[llvm-bugs] [Bug 30341] New: Alias must point to a definition

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=30341

            Bug ID: 30341
           Summary: Alias must point to a definition
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: aizatsky at chromium.org
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Created attachment 17232
  --> https://llvm.org/bugs/attachment.cgi?id=17232&action=edit
Reproducer script

This happens on the sanitizer-x86_64-linux-bootstrap bot. Reproducer attached.

http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap/builds/12886

[255/2434] Building CXX object
tools/clang/utils/TableGen/CMakeFiles/obj.clang-tblgen.dir/NeonEmitter.cpp.o
FAILED:
tools/clang/utils/TableGen/CMakeFiles/obj.clang-tblgen.dir/NeonEmitter.cpp.o 
/mnt/b/sanitizer-buildbot2/sanitizer-x86_64-linux-bootstrap/build/llvm_build0/bin/clang++
  -DCLANG_ENABLE_ARCMT -DCLANG_ENABLE_OBJC_REWRITER
-DCLANG_ENABLE_STATIC_ANALYZER -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GNU_SOURCE
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
-Itools/clang/utils/TableGen
-I/mnt/b/sanitizer-buildbot2/sanitizer-x86_64-linux-bootstrap/build/llvm/tools/clang/utils/TableGen
-I/mnt/b/sanitizer-buildbot2/sanitizer-x86_64-linux-bootstrap/build/llvm/tools/clang/include
-Itools/clang/include -Iinclude
-I/mnt/b/sanitizer-buildbot2/sanitizer-x86_64-linux-bootstrap/build/llvm/include
-nostdinc++ -isystem
/mnt/b/sanitizer-buildbot2/sanitizer-x86_64-linux-bootstrap/build/libcxx_build_msan/include
-isystem
/mnt/b/sanitizer-buildbot2/sanitizer-x86_64-linux-bootstrap/build/libcxx_build_msan/include/c++/v1
 -lc++abi
-Wl,--rpath=/mnt/b/sanitizer-buildbot2/sanitizer-x86_64-linux-bootstrap/build/libcxx_build_msan/lib
-L/mnt/b/sanitizer-buildbot2/sanitizer-x86_64-linux-bootstrap/build/libcxx_build_msan/lib
-fsanitize=memory -w -stdlib=libc++ -fPIC -fvisibility-inlines-hidden -Wall -W
-Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers
-pedantic -Wno-long-long -Wcovered-switch-default -Wnon-virtual-dtor
-Wdelete-non-virtual-dtor -Werror=date-time -std=c++11 -fno-omit-frame-pointer
-gline-tables-only -fsanitize=memory -fcolor-diagnostics -ffunction-sections
-fdata-sections -fno-common -Woverloaded-virtual -Wno-nested-anon-types -O3   
-UNDEBUG  -fno-exceptions -fno-rtti -MMD -MT
tools/clang/utils/TableGen/CMakeFiles/obj.clang-tblgen.dir/NeonEmitter.cpp.o
-MF
tools/clang/utils/TableGen/CMakeFiles/obj.clang-tblgen.dir/NeonEmitter.cpp.o.d
-o tools/clang/utils/TableGen/CMakeFiles/obj.clang-tblgen.dir/NeonEmitter.cpp.o
-c
/mnt/b/sanitizer-buildbot2/sanitizer-x86_64-linux-bootstrap/build/llvm/tools/clang/utils/TableGen/NeonEmitter.cpp
Alias must point to a definition
void (%"class.(anonymous namespace)::TypeSpec"*)*
@_ZN12_GLOBAL__N_18TypeSpecD2Ev
fatal error: error in backend: Broken module found, compilation aborted!
clang-3.9: error: clang frontend command failed with exit code 70 (use -v to
see invocation)
clang version 4.0.0 (trunk 280954)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir:
/mnt/b/sanitizer-buildbot2/sanitizer-x86_64-linux-bootstrap/build/llvm_build0/bin
clang-3.9: 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-3.9: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-3.9: note: diagnostic msg: /tmp/NeonEmitter-5211df.cpp
clang-3.9: note: diagnostic msg: /tmp/NeonEmitter-5211df.sh
clang-3.9: note: diagnostic msg: 

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

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