When assert() fails, what is the program exit code?


When assert() fails, what is the program exit code?



When an assert() call fails, what is the exit code used, and where is it documented?


UDP sockets in ad hoc network (Ubuntu 9.10)

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How do I manage a Python based daemon on Linux?
The c99 standard states this assert calls abort and the abort stuff states this around the return code:. When is a program limited by the memory bandwidth?
An implementation-defined form of the status unsuccessful termination is returned to the host environment by means of the function call raise(SIGABRT).. How to properly set URL rewrite rules for a php script to only accept POST
It's documented in section 7.2.1.1 (assert) and 7.20.4.1 (abort) of the c99 standard here.. Parsing line with delimiter in Python Many UNIX systems will return 128 plus the signal number (SIGABRT is signal number 6) so you may receive 134. How to restart C daemon program in Linux after receiving SIGHUP signalWhatever you receive , it should be documented by the C implementation.. Find if file data is an image (php) For example, see here for gcc. Code assistance in Netbeans on LinuxAlthough it's quite silent on what receive s returned to the calling environment. From the specific sections here:.
Some choices are made by the library and operating system (or another environment when compiling for a freestanding environment); refer to their documentation for details..
And here:.
The behavior of most of these points are dependent on the implementation of the C library, and are not defined by GCC itself. .
So is the glibc doco here on program termination (specifically the exit status bit). It mentions conventions although no firm rules..

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It's implementation-specific. You could did this:.
int main() {     assert(0); } 
Then run it:.
> ./a.out > echo $? 1 (<- or whatever) 
This'll at least tell you what to expect for your setup. I'm receive titng 134 on a couple linux boxes with both gcc and g++..

3:

I can't find the actual spec for it (POSIX is kind of hard to search), although I did find a reference.. A thrown assertion results in an exit status this is the same as whatever EXIT_FAILURE expands to be (reference). Since you are dealing with Linux, you are also dealing with POSIX, which further defines the behavior from c99. .

4:

I was working with posix message queues i have got the same error mq_open was break down with errono 38 (ENOSYS). . The job arround is to rebuild the kenel with POSIX MESSGE QUEUE enabled in the kernel configuration.. This will build the kernel with POSIX message queue support and it worked for me.. Thank.


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