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[Bug libstdc++/79820] std::ifstream sets errno to zero
- From: "redi at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 04 Sep 2017 16:53:02 +0000
- Subject: [Bug libstdc++/79820] std::ifstream sets errno to zero
- Auto-submitted: auto-generated
- References: <bug-79820-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79820
--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Mon Sep 4 16:52:30 2017
New Revision: 251676
URL: https://gcc.gnu.org/viewcvs?rev=251676&root=gcc&view=rev
Log:
PR libstdc++/81751 don't call fflush(NULL)
Backport from mainline
2017-08-09 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/79820
PR libstdc++/81751
* config/io/basic_file_stdio.cc (sys_open(FILE*, ios_base::openmode)):
Call fflush on the stream instead of calling sync() while _M_cfile is
null. Restore original value of errno.
* testsuite/ext/stdio_filebuf/char/79820.cc: New.
* testsuite/ext/stdio_filebuf/char/81751.cc: New.
Added:
branches/gcc-6-branch/libstdc++-v3/testsuite/ext/stdio_filebuf/char/79820.cc
branches/gcc-6-branch/libstdc++-v3/testsuite/ext/stdio_filebuf/char/81751.cc
Modified:
branches/gcc-6-branch/libstdc++-v3/ChangeLog
branches/gcc-6-branch/libstdc++-v3/config/io/basic_file_stdio.cc