fuchsia-x86_64-linux bot frequently fails due to GCC segfault

[Florian Hahn via llvm-commits]

Hello,

It looks like the fuchsia-x86_64-linux has a very high false-positive failure rate. Recently it seems to be failing more than 50% of the time with what looks like GCC crashing. 

For example, please see the last 4 failures which all appeared to fail due to GCC crashing. It looks like you are listed as the admins of the bot and it would be great if you could take a look. If the issue cannot be resolved quickly, please consider temporarily silencing the bot, to avoid unnecessary noise.

Cheers,
Florian

https://lab.llvm.org/buildbot/#/builders/98/builds/14503/steps/9/logs/stdio
https://lab.llvm.org/buildbot/#/builders/98/builds/14505/steps/9/logs/stdio
https://lab.llvm.org/buildbot/#/builders/98/builds/14506/steps/9/logs/stdio
https://lab.llvm.org/buildbot/#/builders/98/builds/14508/steps/9/logs/stdio


FAILED: lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86AvoidStoreForwardingBlocks.cpp.o 
/usr/bin/c++  -DGTEST_HAS_RTTI=0 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib/Target/X86 -I/b/fuchsia-x86_64-linux/llvm.src/llvm/lib/Target/X86 -Iinclude -I/b/fuchsia-x86_64-linux/llvm.src/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-maybe-uninitialized -Wno-class-memaccess -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -Wmisleading-indentation -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -fvisibility=hidden    -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -std=c++14 -MD -MT lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86AvoidStoreForwardingBlocks.cpp.o -MF lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86AvoidStoreForwardingBlocks.cpp.o.d -o lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86AvoidStoreForwardingBlocks.cpp.o -c /b/fuchsia-x86_64-linux/llvm.src/llvm/lib/Target/X86/X86AvoidStoreForwardingBlocks.cpp
virtual memory exhausted: Cannot allocate memory
169.715 [828/63/1819] Building CXX object lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86PreAMXConfig.cpp.o
FAILED: lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86PreAMXConfig.cpp.o 
/usr/bin/c++  -DGTEST_HAS_RTTI=0 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib/Target/X86 -I/b/fuchsia-x86_64-linux/llvm.src/llvm/lib/Target/X86 -Iinclude -I/b/fuchsia-x86_64-linux/llvm.src/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-maybe-uninitialized -Wno-class-memaccess -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -Wmisleading-indentation -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -fvisibility=hidden    -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -std=c++14 -MD -MT lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86PreAMXConfig.cpp.o -MF lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86PreAMXConfig.cpp.o.d -o lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86PreAMXConfig.cpp.o -c /b/fuchsia-x86_64-linux/llvm.src/llvm/lib/Target/X86/X86PreAMXConfig.cpp
cc1plus: out of memory allocating 131072 bytes after a total of 7684096 bytes
169.727 [828/62/1820] Building CXX object lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86LowerTileCopy.cpp.o
FAILED: lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86LowerTileCopy.cpp.o 
/usr/bin/c++  -DGTEST_HAS_RTTI=0 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib/Target/X86 -I/b/fuchsia-x86_64-linux/llvm.src/llvm/lib/Target/X86 -Iinclude -I/b/fuchsia-x86_64-linux/llvm.src/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-maybe-uninitialized -Wno-class-memaccess -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -Wmisleading-indentation -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -fvisibility=hidden    -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -std=c++14 -MD -MT lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86LowerTileCopy.cpp.o -MF lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86LowerTileCopy.cpp.o.d -o lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86LowerTileCopy.cpp.o -c /b/fuchsia-x86_64-linux/llvm.src/llvm/lib/Target/X86/X86LowerTileCopy.cpp
virtual memory exhausted: Cannot allocate memory
169.742 [828/61/1821] Building CXX object lib/Target/ARM/Disassembler/CMakeFiles/LLVMARMDisassembler.dir/ARMDisassembler.cpp.o
FAILED: lib/Target/ARM/Disassembler/CMakeFiles/LLVMARMDisassembler.dir/ARMDisassembler.cpp.o 
/usr/bin/c++  -DGTEST_HAS_RTTI=0 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib/Target/ARM/Disassembler -I/b/fuchsia-x86_64-linux/llvm.src/llvm/lib/Target/ARM/Disassembler -I/b/fuchsia-x86_64-linux/llvm.src/llvm/lib/Target/ARM -Ilib/Target/ARM -Iinclude -I/b/fuchsia-x86_64-linux/llvm.src/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-maybe-uninitialized -Wno-class-memaccess -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -Wmisleading-indentation -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -fvisibility=hidden    -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -std=c++14 -MD -MT lib/Target/ARM/Disassembler/CMakeFiles/LLVMARMDisassembler.dir/ARMDisassembler.cpp.o -MF lib/Target/ARM/Disassembler/CMakeFiles/LLVMARMDisassembler.dir/ARMDisassembler.cpp.o.d -o lib/Target/ARM/Disassembler/CMakeFiles/LLVMARMDisassembler.dir/ARMDisassembler.cpp.o -c /b/fuchsia-x86_64-linux/llvm.src/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
c++: internal compiler error: Segmentation fault signal terminated program cc1plus
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