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Re: realpath(path,NULL)
From: |
Jim Meyering |
Subject: |
Re: realpath(path,NULL) |
Date: |
Wed, 11 May 2011 19:35:51 +0200 |
Bruno Haible wrote:
> It was reported in <https://savannah.gnu.org/bugs/?33273> that the test
> program
> of canonicalize.m4 leads to a crash and a dialog box while running 'configure'
> on MacOS X 10.4.
>
> Actually I reproduce it also on MacOS X 10.5, FreeBSD 6.4, OpenBSD 4.4 with
> this small test program:
> ==============================================================
> #include <stdlib.h>
> int
> main ()
> {
> char *name1 = realpath ("conftest.a", NULL);
> char *name2 = realpath ("conftest.b/../conftest.a", NULL);
> char *name3 = realpath ("conftest.a/", NULL);
> return !(name1 && *name1 == '/' && !name2 && !name3);
> }
> ===============================================================
>
> Here is a proposed fix:
>
> 2011-05-11 Bruno Haible <address@hidden>
>
> canonicalize, canonicalize-lgpl: Avoid crash dialog on MacOS X.
> * m4/canonicalize.m4 (gl_FUNC_REALPATH_WORKS): Add GL_NOCRASH code.
> * modules/canonicalize (Depends-on): Add 'nocrash'.
> * modules/canonicalize-lgpl (Depends-on): Likewise.
> * doc/posix-functions/realpath.texi: Update platforms list.
> Reported by Ryan Schmidt <address@hidden>.
Nice work. Thanks!
I was pleasantly surprised to see how concise the change is.