Bug #82035 bits/string3.h:82: warning: memset used with constant zero length parameter

• Submitted: 28 Jun 2016 16:13
• Modified: 21 Aug 2016 19:36
• Reporter: Peter VARGA
• Status: Can't repeat
• Category: Connector / C
• Severity: S3 (Non-critical)
• Version: 6.1.6
• OS: SUSE
• CPU Architecture: Any
• Tags: memset, Parameter, zero

[28 Jun 2016 16:13] Peter VARGA

Description:
See description on Stackoverflow.com

http://stackoverflow.com/questions/38075241/bits-string3-h82-warning-memset-used-with-cons...

How to repeat:
compile and link this sample with gcc 4.9.3

#include <string.>
#include <my_global.h>
#include <mysql.h>

int main()
{
    mysql_init( NULL );
}

[28 Jun 2016 16:16] Peter VARGA

This is the correct sample source:

#include <my_global.h>
#include <mysql.h>

int main()
{
    mysql_init( NULL );
}

[10 Aug 2016 12:37] Chiranjeevi Battula

Hello Peter VARGA,

Thank you for the bug report.
I tried to reproduce the issue at my end using MySQL Connector / C 6.1.6, GCC 5.3.1 but not seeing any warnings while compiling code.
If you can provide more information, feel free to add it to this bug and change the status back to 'Open'.

Thank you for your interest in MySQL.

Thanks,
Chiranjeevi.

[21 Aug 2016 19:36] Peter VARGA

No, I did not say that compiling fails! The warning appears while linking the test case:

g++ -std=c++11 `mysql_config --include` mysqlBug.cpp -c
No warning!

g++ mysqlBug.o `mysql_config --libs`
The warning:
/usr/lib64/mysql/libmysqlclient.a(ssl.cpp.o): In function `memset':
/usr/include/bits/string3.h:82: warning: memset used with constant zero length parameter; this could be due to transposed parameters