https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106162
Bug ID: 106162
Summary: libstdc++v3: bits/largefile-config.h.tmp: No such file
or directory race condition
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: slyfox at gcc dot gnu.org
CC: jwakely.gcc at gmail dot com
Target Milestone: ---
There is a race condition when (I speculate) libstdcv++v3 is built in parallel
from different 'make' processes. Perhaps for c++98 | c++11 | x++17 instances?
>From libstdc++-v3/include/Makefile.am:
# This header is not installed, it's only used to build libstdc++ itself.
${host_builddir}/largefile-config.h: ${CONFIG_HEADER}
@rm -f $@.tmp
@-grep 'define _DARWIN_USE_64_BIT_INODE' ${CONFIG_HEADER} >> $@.tmp
@-grep 'define _FILE_OFFSET_BITS' ${CONFIG_HEADER} >> $@.tmp
@-grep 'define _LARGE_FILES' ${CONFIG_HEADER} >> $@.tmp
@mv $@.tmp $@
As a result 'bits/largefile-config.h' rule gets executed in parallel and
clobbers temporary file on this week's gcc-13 snapshot:
...
make[3]: Entering directory '/build/build/x86_64-w64-mingw32/libstdc++-v3'
Making all in include
make[4]: Entering directory
'/build/build/x86_64-w64-mingw32/libstdc++-v3/include'
echo 1 > stamp-dual-abi
echo 1 > stamp-allocator-new
echo timestamp > stamp-pb
echo 1 > stamp-cxx11-abi
echo 0 > stamp-visibility
echo 1 > stamp-extern-template
echo 0 > stamp-namespace-version
echo 'define _GLIBCXX_USE_FLOAT128 1' > stamp-float128
/nix/store/xsq6y0yn5mbmyazn51c86kz9zkr357xj-bash-5.1-p16/bin/bash: line 1:
x86_64-w64-mingw32/bits/largefile-config.h.tmp: No such file or directory
make[4]: [Makefile:1785: x86_64-w64-mingw32/bits/largefile-config.h] Error 1
(ignored) shuffle=1656692854
/nix/store/xsq6y0yn5mbmyazn51c86kz9zkr357xj-bash-5.1-p16/bin/bash: line 1:
x86_64-w64-mingw32/bits/largefile-config.h.tmp: No such file or directory
make[4]: [Makefile:1786: x86_64-w64-mingw32/bits/largefile-config.h] Error 1
(ignored) shuffle=1656692854
/nix/store/xsq6y0yn5mbmyazn51c86kz9zkr357xj-bash-5.1-p16/bin/bash: line 1:
x86_64-w64-mingw32/bits/largefile-config.h.tmp: No such file or directory
make[4]: [Makefile:1787: x86_64-w64-mingw32/bits/largefile-config.h] Error 1
(ignored) shuffle=1656692854
mv: cannot stat 'x86_64-w64-mingw32/bits/largefile-config.h.tmp': No such file
or directory
make[4]: *** [Makefile:1788: x86_64-w64-mingw32/bits/largefile-config.h] Error
1 shuffle=1656692854
make[4]: *** Waiting for unfinished jobs....
make[4]: Leaving directory
'/build/build/x86_64-w64-mingw32/libstdc++-v3/include'
make[3]: *** [Makefile:576: all-recursive] Error 1 shuffle=1656692854
make[3]: Leaving directory '/build/build/x86_64-w64-mingw32/libstdc++-v3'
make[2]: *** [Makefile:501: all] Error 2 shuffle=1656692854
make[2]: Leaving directory '/build/build/x86_64-w64-mingw32/libstdc++-v3'
make[1]: *** [Makefile:12287: all-target-libstdc++-v3] Error 2
shuffle=1656692854
make[1]: Leaving directory '/build/build'
make: *** [Makefile:1031: all] Error 2 shuffle=1656692854
Note how 'largefile-config.h.tmp: No such file or directory' is reported 3
times.
Will attach full build.log in case it makes the error cause clearer.
