Module Name: src
Committed By: martin
Date: Fri Aug 23 18:28:10 UTC 2024
Modified Files:
src/distrib/sets/lists/debug [netbsd-10]: mi
src/distrib/sets/lists/tests [netbsd-10]: mi
src/etc/mtree [netbsd-10]: NetBSD.dist.tests
src/external/gpl3/gcc/dist/libstdc++-v3/config/io [netbsd-10]:
basic_file_stdio.cc
Added Files:
src/tests/lib/libstdc++ [netbsd-10]: Makefile h_cin_nosync.cc
t_sync_with_stdio.sh
Log Message:
Pull up following revision(s) (requested by riastradh in ticket #801):
tests/lib/libstdc++/h_cin_nosync.cc: revision 1.1
tests/lib/libstdc++/t_sync_with_stdio.sh: revision 1.1
tests/lib/libstdc++/t_sync_with_stdio.sh: revision 1.2
etc/mtree/NetBSD.dist.tests: revision 1.204
distrib/sets/lists/tests/mi: revision 1.1313
tests/lib/libstdc++/Makefile: revision 1.1
distrib/sets/lists/debug/mi: revision 1.433
external/gpl3/gcc/dist/libstdc++-v3/config/io/basic_file_stdio.cc: revision 1.2
libstdc++: Add test for PR lib/58206, sync_with_stdio busted.
libstdc++: Don't try to fflush stdin.
It doesn't work. It's undefined behaviour. On NetBSD, it will fail
with EBADF, if fd 0 isn't open for write, or if fd 0 is open for
write, it will write heap garbage to fd 0.
If stream points to an output stream or an update stream in which
the most recent operation was not input, the fflush function causes
any unwritten data for that stream to be delivered to the host
environment to be written to the file; otherwise, the behavior is
undefined.
(ISO C11 and ISO C17, Sec. 7.21.5.2 `The fflush function')
PR lib/58206
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114879
To generate a diff of this commit:
cvs rdiff -u -r1.394.2.7 -r1.394.2.8 src/distrib/sets/lists/debug/mi
cvs rdiff -u -r1.1238.2.7 -r1.1238.2.8 src/distrib/sets/lists/tests/mi
cvs rdiff -u -r1.197.2.1 -r1.197.2.2 src/etc/mtree/NetBSD.dist.tests
cvs rdiff -u -r1.1.1.12 -r1.1.1.12.6.1 \
src/external/gpl3/gcc/dist/libstdc++-v3/config/io/basic_file_stdio.cc
cvs rdiff -u -r0 -r1.1.4.2 src/tests/lib/libstdc++/Makefile \
src/tests/lib/libstdc++/h_cin_nosync.cc
cvs rdiff -u -r0 -r1.2.4.2 src/tests/lib/libstdc++/t_sync_with_stdio.sh
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.