Bug 133866 - Bogus THROW spec in /usr/include/utime.h
Bogus THROW spec in /usr/include/utime.h
Product: Fedora
Classification: Fedora
Component: glibc (Show other bugs)
All Linux
medium Severity low
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Assigned To: Jakub Jelinek
Brian Brock
Depends On:
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Reported: 2004-09-27 20:29 EDT by Tom Lane
Modified: 2013-07-02 23:02 EDT (History)
1 user (show)

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Doc Type: Bug Fix
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Last Closed: 2004-09-28 03:55:41 EDT
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Description Tom Lane 2004-09-27 20:29:55 EDT
Description of problem: gcc -Wall generates a warning "null argument
where non-null required" when the second argument of utime() is NULL.
A null second argument is legal per the man page, per the Single Unix
Spec, and per experiment, so the warning is bogus.  Accordingly, the
THROW spec in /usr/include/utime.h is wrong.

Version-Release number of selected component (if applicable):

How reproducible: Always.

Steps to Reproduce:
[tgl@rh1 ~]$ cat utimetest.c
#include <stdlib.h>
#include <sys/types.h>
#include <utime.h>

int main(int argc, char** argv)
  char * path = argv[1];

  utime(path, NULL);

  return 0;
[tgl@rh1 ~]$ gcc -Wall utimetest.c
utimetest.c: In function `main':
utimetest.c:9: warning: null argument where non-null required (arg 2)
[tgl@rh1 ~]$ ./a.out a.out
[tgl@rh1 ~]$ -- note lack of crash
Actual results:

Expected results: No warning.

Additional info:
Comment 1 Jakub Jelinek 2004-09-28 03:55:41 EDT
The problem was not in __THROW (which is something completely else),
but with __nonnull ((1, 2)) attribute on utime which ought to be
__nonnull ((1)).
Fixed in CVS, will make it into next rawhide rpms.

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