Re: [Boost-users] more info-boost install with gentoo issue?

From: dave_at_[hidden]
Date: 2004-10-05 07:00:37

OK, awake again and looking into the beolow problem more...
my program pulls a message off of a UDP datagram socket with

  int s = socket(AF_INET, SOCK_DGRAM, 0);
  int iVal;
  struct sockaddr_in oFromAddr;
  char msg[1024];
  int iMsgLen;
  socklen_t iFromLen;

  oMyAddr.sin_family = AF_INET;
  oMyAddr.sin_addr.s_addr = htonl(INADDR_ANY);
  oMyAddr.sin_port = htons(5060);
  iVal = bind(s, (struct sockaddr *) &oMyAddr, sizeof (oMyAddr));

  int iVal = recvfrom(s, (void *)&msg, iMsgLen, 0, (struct sockaddr *)
&oFromAddr, &iFromLen);

When I link to libboost_regex and i get past this last line, the msg
buffer is still filled with null characters and the return value of
recvfrom is 0-it didnt get anything off of the socket. All I am doing is
linking the lib, im not calling on headers or the lib in any way.  Taking
-lboost_regex out fo the linker flags fixes that issue.  Also, when i
create char msg[1024], the contents of msg are trash, not repeating null
characters(as they are when boost_regex is linked to).  What is boost
doing, im pretty new to it..
thanks, dave

> Well, more likely my mistake, ive been up awhile..
> I installed the boost libs onto my gentoo machine with emerge.
>
> I then added -lboost_regex to my linker flags..thats it.  When I run my
> app, it hangs, I think when waiting on pulling data of off a UDP socket.
> Though I cant tell, I'm about to crash and its been one of those days.
> But I do know everything is back to normal when I take -lboost_regex out
> of the flags again.
>
> I know I'm awfully vague due to lazy/tiredness, but does this ring a bell
> with anyone?  I've installed boost the traditional way (bjam) on other
> linux distros before without any issue, but ive never tried emerge before.
>  I dont know if this has something to do with it, or i am somehow missing
> something really obvious..
>
> Thanks for bearing with me,
> Dave
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