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Re: C++ and read redefinition
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From: |
Bruno Haible |
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Subject: |
Re: C++ and read redefinition |
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Date: |
Sun, 06 Dec 2020 16:48:53 +0100 |
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User-agent: |
KMail/5.1.3 (Linux/4.4.0-193-generic; KDE/5.18.0; x86_64; ; ) |
Daniel R. Hurtmans wrote:
> undefined reference to `std::basic_ifstream<char, std::char_traits<char>
> >::_close()'
Oh, so the OpenMP #pragma is not the only problem. It potentially affects
all of the symbols that are #defined.
I'm committing the attached two patches. The idea is to not use #defines
for redirecting functions in C++ mode, when GNULIB_NAMESPACE is defined.
With these patches, you should be able to revert the workaround that I
suggested earlier. But you need to define GNULIB_NAMESPACE.
2020-12-06 Bruno Haible <bruno@clisp.org>
Do the Windows oldnames workaround through the C++ GNULIB_NAMESPACE.
Reported by Daniel R. Hurtmans <Daniel.Hurtmans@ulb.ac.be> in
<https://lists.gnu.org/archive/html/bug-gnulib/2020-12/msg00029.html>.
* lib/c++defs.h (_GL_CXXALIAS_MDA_CAST): New macro.
* lib/fcntl.in.h (creat, open): In C++ mode, when GNULIB_NAMESPACE is
defined: 1. Define a symbol in this namespace. 2. Don't redirect using
a preprocessor #define.
* lib/math.in.h (j0, j1, jn, y0, y1, yn): Likewise.
* lib/search.in.h (lfind, lsearch): Likewise.
* lib/stdio.in.h (fcloseall, fdopen, fileno, getw, putw, tempnam):
Likewise.
* lib/stdlib.in.h (ecvt, fcvt, gcvt, mktemp, putenv): Likewise.
* lib/string.in.h (memccpy, strdup): Likewise.
* lib/sys_stat.in.h (chmod, umask): Likewise.
* lib/time.in.h (tzset): Likewise.
* lib/unistd.in.h (access, chdir, close, dup, dup2, execl, execle,
execlp, execv, execve, execvp, execvpe, getcwd, getpid, isatty, lseek,
read, rmdir, swab, unlink, write): Likewise.
* lib/utime.in.h (utime): Likewise.
* lib/wchar.in.h (wcsdup): Likewise.
* m4/stdio_h.m4 (gl_STDIO_H_DEFAULTS): Initialize HAVE_DECL_FCLOSEALL.
(gl_STDIO_H): Set HAVE_DECL_FCLOSEALL.
* modules/stdio (Makefile.am): Substitute HAVE_DECL_FCLOSEALL.
* m4/stdlib_h.m4 (gl_STDLIB_H_DEFAULTS): Initialize HAVE_DECL_ECVT,
HAVE_DECL_FCVT, HAVE_DECL_GCVT.
(gl_STDLIB_H): Set HAVE_DECL_ECVT, HAVE_DECL_FCVT, HAVE_DECL_GCVT.
* modules/stdlib (Makefile.am): Substitute HAVE_DECL_ECVT,
HAVE_DECL_FCVT, HAVE_DECL_GCVT.
* m4/unistd_h.m4 (gl_UNISTD_H_DEFAULTS): Initialize HAVE_DECL_EXECVPE.
(gl_UNISTD_H): Set HAVE_DECL_EXECVPE.
* modules/unistd (Makefile.am): Substitute HAVE_DECL_EXECVPE.
* m4/wchar_h.m4 (gl_WCHAR_H_DEFAULTS): Initialize HAVE_DECL_WCSDUP.
(gl_WCHAR_H): Set HAVE_DECL_WCSDUP.
* modules/wchar (Makefile.am): Substitute HAVE_DECL_WCSDUP.
2020-12-06 Bruno Haible <bruno@clisp.org>
doc: Mention some missing function declarations.
* doc/glibc-functions/execvpe.texi: Mention the missing declaration on
AIX.
* doc/glibc-functions/fcloseall.texi: Mention the missing declaration on
FreeBSD.
* doc/pastposix-functions/ecvt.texi: Mention the missing declaration on
Cygwin.
* doc/pastposix-functions/fcvt.texi: Likewise.
* doc/pastposix-functions/gcvt.texi: Likewise.
0001-doc-Mention-some-missing-function-declarations.patch
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0002-Do-the-Windows-oldnames-workaround-through-the-C-GNU.patch
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