PR/58206 CVS commit: [netbsd-10] src

[gnats-admin%netbsd.org@localhost]

The following reply was made to PR lib/58206; it has been noted by GNATS.

From: "Martin Husemann" <martin%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/58206 CVS commit: [netbsd-10] src
Date: Fri, 23 Aug 2024 18:28:10 +0000

 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.