[Bug libc/16429] New: strptime truncate 64bit pointer to 32bit

[Bug libc/16429] New: strptime truncate 64bit pointer to 32bit

[hxnhxn at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=16429

            Bug ID: 16429
           Summary: strptime truncate 64bit pointer to 32bit
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: hxnhxn at gmail dot com
                CC: drepper.fsp at gmail dot com

under 64-bit enviroment, when input an 64-bit pointer as arg1 to strptime, e.g,
a char[] array, it will return a pointer with higher 4 bytes set to zero. 
for example:

char timestr[655] = "2011-11-27T23:06:23qi/ning";
struct tm t;
char * ret = strptime(timestr, "%FT%H:%M:%S", &t);
printf("%llx %llx\n", ret, timestr);
printf("%c\n", *ret);

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[Bug libc/16429] strptime truncate 64bit pointer to 32bit

[neleai at seznam dot cz]

https://sourceware.org/bugzilla/show_bug.cgi?id=16429

Ondrej Bilka <neleai at seznam dot cz> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |neleai at seznam dot cz
         Resolution|---                         |INVALID

--- Comment #1 from Ondrej Bilka <neleai at seznam dot cz> ---
Cannot replicate on x86-64.

Test program returns:

7fffffffe633 7fffffffe620
q

which has upper bytes nonzero.

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[Bug libc/16429] strptime truncate 64bit pointer to 32bit

[bugdal at aerifal dot cx]

https://sourceware.org/bugzilla/show_bug.cgi?id=16429

Rich Felker <bugdal at aerifal dot cx> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugdal at aerifal dot cx

--- Comment #2 from Rich Felker <bugdal at aerifal dot cx> ---
Next time try compiling with -Werror=implicit-function-declaration. You may
also want to file a bug report with GCC requesting that this be made default,
since use of implicit function declarations is always an error and is a
constraint violation.

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[Bug libc/16429] strptime truncate 64bit pointer to 32bit

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=16429

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |security-

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