Tpcall return 1 when service call time's out (Tuxedo 8.1 on AIX 5.3TL6)

Question

Hello,
I have an unexpected return code from tpcall !!??
The code is simple :
if (rc = tpcall ( (char *) service.c_str(), idata, ilen, odata, olen ,flags ) < 0 ) {
printf ( "Returned %d\n", rc ) ;
When the called service is timeout (SVCTIMEOUT) rc's value is 1 !!??
Has anybody some explanation for this unexpected return code.
Is this a bug or an undocumented valid return value for tpcall ?

Answer 1

Herbert,
The < operator is of higher precedence than the = operator in C++ and C.
Your program is evaluating the expression tpcall ( (char *) service.c_str(),
idata, ilen, odata, olen ,flags ) < 0.
When the service fails, this expression is true, so 1 is assigned to rc.
Parentheses will fix this problem:
if ((rc = tpcall ( (char *) service.c_str(), idata, ilen, odata, olen
,flags) ) < 0 ) {
Ed
<herbert koelman> wrote in message news:[email protected]..
Hello,
I have an unexpected return code from tpcall !!??
The code is simple :
if (rc = tpcall ( (char *) service.c_str(), idata, ilen, odata, olen
,flags ) < 0 ) {
printf ( "Returned %d\n", rc ) ;
When the called service is timeout (SVCTIMEOUT) rc's value is 1 !!??
Has anybody some explanation for this unexpected return code.
Is this a bug or an undocumented valid return value for tpcall ?