From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Fri, 16 Jun 2000 14:57:39 -0400
From: Ish Rattan <ishwar@pali.cps.cmich.edu>
Message-Id: <200006161857.OAA11131@pali.cps.cmich.edu>
To: 9fans@cse.psu.edu
Subject: [9fans] C-program error..
Topicbox-Message-UUID: c1d9c924-eac8-11e9-9e20-41e7f4b1d025

Hello,

Just tried translation of an old alef program. The program
aborts with run time error. Source and output given below.

Any pointers?
- ishwar
----
/* First C program, uses channel and procs..
	dies horribly..
*/

#include <u.h>
#include <libc.h>
#include <thread.h>

#define STACKSIZE (2*2048)

void recvit(void *arg)
{
   char *s;
   Channel *in = arg;

   recv(in, s);
   print("%s\n", s);
}

void threadmain(int argc, char *argv[])
{
   char m[32];
   Channel *sch;

   sch = chancreate(sizeof(m), 0);
   strcpy(m, "hello world!");
   print("main: %s\n", m);
   proccreate(recvit, (void *)sch, STACKSIZE);

   send(sch, m);

   print("done\n");
   exits(nil);
}
---
main: hello world!
 done
hello world!
panic: D2B called on non-block 510a8
8.out 513: suicide: sys: trap: fault read addr=0x0 pc=0x00003fd1
---