[ts-7000] Re: segmentation fault at the end main function

["Damir Dzemidzic" <>]

Donal, I suppose you are quite right I should return value even at the end of main(). But it was not the cause of the problem. The optimization is not cause either as Jim recommended to check. I had the optimization set to NULL. Jim, thanks for suggestion of  using sleep(1) but did not gimme an insight either.  So here is the strace output

write(1, "Creating com port\n", 18Creating com port
)     = 18
write(1, "Created port OK\n", 16Created port OK
)       = 16
open("/dev/ttyS1", O_RDWR|O_NONBLOCK|O_NOCTTY) = 3
fcntl64(3, F_SETFL, O_RDONLY)           = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGCHLD, NULL, {SIG_DFL}, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
nanosleep({1, 0}, {1, 0})               = 0
write(1, "COM2 port has been sucessfully o"..., 74COM2 port has been sucessfully
 opened. Descriptor is: 3Opened com port OK
) = 74
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {B115200 -opost -isig -icanon -echo ...}
) = 0
ioctl(3, TCFLSH, 0)                     = 0ioctl(3, SNDCTL_TMR_START or TCSETS, {B115200 -opost -isig -icanon -echo ...}) =
 0
write(3, "Testing", 7)                  = 7
close(3)                                = 0
write(1, "Closed com port\n", 16Closed com port
)       = 16
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++

Looks not much to me.

One thing left is that I have't commented out the getty process on ttyS1 in the /etc/inittab. Perhaps closing fd,   may interfere with it. But actual terminal ttyS1 has no problems of working with user.

 

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