Public bug reported:
Whenever I attempt to build LLVM using profiling with GCC, by the time
make reaches 100% and continuing to build the tests, the entire computer
freezes, with the hard drive moving and fans blaring, ever single time.
This issue occurs by performing the following:
Prerequisite: Have cmake 3.15.5 nstalled
1. Download LLVM-project 8.0.1
2. Open terminal, and create a build folder in the LLVM project source directory
3. Enter that build folder, and using cmake, create Unix Makefiles, via this
command, "cmake -DLLVM_BUILD_INSTRUMENTED=IR -DLLVM_BUILD_RUNTIME=No
-DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ -DCMAKE_BUILD_TYPE=Release -G
"Unix Makefiles" ../llvm"
4. Type "make -j8 all CFLAGS='-flto -O3 -fprofile-arcs -ftest-coverage
-fbranch-probabilities -fprofile-abs-path' CXXFLAGS='-flto -O3 -fprofile-arcs
-ftest-coverage -fbranch-probabilities -fprofile-abs-path" and press Enter
When the build reaches 100%, notice how the machine freezes and forces
the user to restart
Expected Results:
gcc compiles the tests and product files without issue.
Actual Results:
GCC freezes and causes the entire computer to freeze up.
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: g++ 4:9.2.1-3.1ubuntu1
ProcVersionSignature: Ubuntu 5.3.0-23.25-generic 5.3.7
Uname: Linux 5.3.0-23-generic x86_64
ApportVersion: 2.20.11-0ubuntu8.2
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Nov 24 15:06:10 2019
InstallationDate: Installed on 2019-11-20 (4 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: gcc-defaults
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gcc-defaults (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug eoan
** Attachment added: "log messages"
https://bugs.launchpad.net/bugs/1853771/+attachment/5307550/+files/log%20messages
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https://bugs.launchpad.net/bugs/1853771
Title:
GCC Building LLVM causes the entire computer to freeze, forcing me to
reboot.
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