Compiling with -mt produces value error in run-time code

Bugzilla Link	1115
Created on	Feb 20, 2014 19:02
Version	svn
OS	Linux
Architecture	PC
Attachments	crud.sac

Extended Description

Created an attachment (id=1003)
source code to reproduce fault
sac2c -V
sac2c v1.00-beta (Haggis And Apple)
 developer rev 18429 linux-gnu_x86_64
 (Thu Feb 20 12:56:46 EST 2014 by sac)
sac2c crud.sac -v1 -mt -d cccall -d syscall
a.out.c: In function ‘SACf__MAIN_CL_ST__main’:
a.out.c:1026: warning: ‘SACp_pinl_1728__flat_59’ may be used uninitialized in this function
The same compilation without -mt issues no warnings.
The variable is an argument to this macro: SAC_MT_SEND_PARAM_in.