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bug#19874: 25.0.50; encode-time not working as expected
From: |
Wolfgang Jenkner |
Subject: |
bug#19874: 25.0.50; encode-time not working as expected |
Date: |
Fri, 27 Feb 2015 18:33:47 +0100 |
User-agent: |
Gnus/5.130012 (Ma Gnus v0.12) Emacs/25.0.50 (berkeley-unix) |
On Thu, Feb 26 2015, Paul Eggert wrote:
> Emacs's putenv implementation should be portable to any POSIX
> platform, but FreeBSD 10.1 getenv+setenv has a bug. The attached
> program should work on any POSIX platform, and it does work on
> GNU/Linux and on Solaris, but it doesn't work on FreeBSD 10.1. Emacs
> has similar code, which apparently also runs afoul of the FreeBSD bug.
>
> #include <stdio.h>
> #include <stdlib.h>
> extern char **environ;
> char env1[] = "abc=def";
> char *small_environ[] = { env1, 0 };
> int
> main (void)
> {
> environ = small_environ;
> if (setenv ("mno", "pqr", 0) != 0)
> return perror ("setenv"), 1;
> env1[0] = 'x';
> if (! getenv ("xbc"))
> return fprintf (stderr, "getenv failed\n"), 1;
> return 0;
> }
IIUC, the standard explicitly permits the FreeBSD behaviour, so the
program above does not seem to be conforming:
http://pubs.opengroup.org/onlinepubs/9699919799/functions/getenv.html
If the application switches to a complete new environment by
assigning a new value to environ, this can be detected by
getenv(), setenv(), unsetenv(), or putenv() and the
implementation can at that point reinitialize based on the new
environment. (This may include copying the environment strings
into a new array and assigning environ to point to it.)
- bug#19874: 25.0.50; encode-time not working as expected, (continued)
- bug#19874: 25.0.50; encode-time not working as expected, Ashish SHUKLA, 2015/02/26
- bug#19874: 25.0.50; encode-time not working as expected, Wolfgang Jenkner, 2015/02/26
- bug#19874: 25.0.50; encode-time not working as expected, Wolfgang Jenkner, 2015/02/26
- bug#19874: 25.0.50; encode-time not working as expected, Ashish SHUKLA, 2015/02/27
- bug#19874: 25.0.50; encode-time not working as expected, Paul Eggert, 2015/02/27
- bug#19874: 25.0.50; encode-time not working as expected, Paul Eggert, 2015/02/27
- bug#19874: 25.0.50; encode-time not working as expected, Ashish SHUKLA, 2015/02/27
bug#19874: 25.0.50; encode-time not working as expected, Paul Eggert, 2015/02/27
bug#19874: 25.0.50; encode-time not working as expected, Ashish SHUKLA, 2015/02/27
bug#19874: 25.0.50; encode-time not working as expected,
Wolfgang Jenkner <=