#123 msg_hclass_offset() does not work correctly when sofia-sip has been built with gcc 4.9.x

[François Grisez]

Hello sofia-sip team.

I am working on a SIP server which use sofia-sip as SIP stack. I found that msg_dup does not completly copy SIP messages when sofia-sip has been built with gcc 4.9.2. After more investigations, I found that gcc's optimizations alterate the working of the msg_hclass_offset() function. More sepcificaly, gcc destroies the loop situated at line 2551.

The issue occures with version 4.9.x of gcc and the last release of sofia-sip (1.12.11).

I give you in attachement a programm that highlight the issue. It parse a SIP message located in a file, copy it with msg_dup() and print the source message and copied message by using msg_as_string().

Thank you in advance

François Grisez

[mjerris]

there is a patch in the freeswitch tree to fix this issue already. You can use that for now.

On Jan 9, 2015, at 9:45 AM, François Grisez fgrisez@users.sf.net wrote:

[bugs:#123] msg_hclass_offset() does not work correctly when sofia-sip has been built with gcc 4.9.x

Status: open
Group: SIPit17
Created: Fri Jan 09, 2015 02:45 PM UTC by François Grisez
Last Updated: Fri Jan 09, 2015 02:45 PM UTC
Owner: nobody

Hello sofia-sip team.

I am working on a SIP server which use sofia-sip as SIP stack. I found that msg_dup does not completly copy SIP messages when sofia-sip has been built with gcc 4.9.2. After more investigations, I found that gcc's optimizations alterate the working of the msg_hclass_offset() function. More sepcificaly, gcc destroies the loop situated at line 2551.

The issue occures with version 4.9.x of gcc and the last release of sofia-sip (1.12.11).

I give you in attachement a programm that highlight the issue. It parse a SIP message located in a file, copy it with msg_dup() and print the source message and copied message by using msg_as_string().

Thank you in advance

François Grisez

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[François Grisez]

The FreeSwitch patch works fine for me.
Thank you very much

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François Grisez