But when I use the newly allocated stack, I get: Jump to the invalid address stated on the next line at 0x0: ??? Address 0x0 is not stack'd, malloc'd or (recently) free'd Process terminating with default action of signal 11 (SIGSEGV) Bad permissions for mapped region at address 0x0 at 0x0: ???

But when I use the newly allocated stack, I get: Jump to the invalid address stated on the next line at 0x0: ??? Address 0x0 is not stack'd, malloc'd or (recently) free'd Process terminating with default action of signal 11 (SIGSEGV) Bad permissions for mapped region at address 0x0 at 0x0: ???

May I know why do you consider it much better? I think it is more expensive as it always touches stack and clobbers registers that are not needed in most of the syscall cases. Is there a purpose behind this?

So you get NULL by the mmap?

no

It literally says that you call NULL

But when I use the newly allocated stack, I get: Jump to the invalid address stated on the next line at 0x0: ??? Address 0x0 is not stack'd, malloc'd or (recently) free'd Process terminating with default action of signal 11 (SIGSEGV) Bad permissions for mapped region at address 0x0 at 0x0: ???

It literally says that you call NULL

My code: char *newstack = (char *)mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0); if (newstack == MAP_FAILED) { return EXIT_FAILURE; } int res = clone(CLONE_FILES | CLONE_FS | CLONE_IO | CLONE_PTRACE | CLONE_VM, newstack, NULL, NULL, 0);

But when I use the newly allocated stack, I get: Jump to the invalid address stated on the next line at 0x0: ??? Address 0x0 is not stack'd, malloc'd or (recently) free'd Process terminating with default action of signal 11 (SIGSEGV) Bad permissions for mapped region at address 0x0 at 0x0: ???

Are you sure you got clone() args right?

Yeah I am using the low level system call instead of libc

I mean those two NULL's should be there?

Yes, these are just for TIDs

Well you never know whether the callee would check for null or not.

I just hope so

Don't hope. Read docs :P. Or test for a desperate measure.

There are no docs about the low level function

Well, there is probably second section of system man pages for that if you on Unix like system

Yeah

Hi can anyone help me? I made server + host for simple chat in rad studio with clientsocket and serversocket components but i feel it work not properly.. Now I even thinking to move to visual studio to find more examples. Can someone share good simple example of handling multiple clients in chat? Becouse my main problem i think in what i dont understand why client makes too many connections to server, i think it should be only one..

Can you send your clients code?

My code: char *newstack = (char *)mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0); if (newstack == MAP_FAILED) { return EXIT_FAILURE; } int res = clone(CLONE_FILES | CLONE_FS | CLONE_IO | CLONE_PTRACE | CLONE_VM, newstack, NULL, NULL, 0);

posting a picture... You should get warn

Show me the rule I should be warned for

yeah, you are right "* Long code snippets must be posted via a snippet website(links below), posting pictures of code and posting long snippets in the group is not allowed." And based on this "unreasonable rule", sending such pictures are allowed. (sadly, people get banned for what you decided to set as rule)

yeah, you are right "* Long code snippets must be posted via a snippet website(links below), posting pictures of code and posting long snippets in the group is not allowed." And based on this "unreasonable rule", sending such pictures are allowed. (sadly, people get banned for what you decided to set as rule)

Also * A little bit of programming related memes, jokes, shitposting are allowed.

accepted. The last other "picture" was hours ago.

yeah, you are right "* Long code snippets must be posted via a snippet website(links below), posting pictures of code and posting long snippets in the group is not allowed." And based on this "unreasonable rule", sending such pictures are allowed. (sadly, people get banned for what you decided to set as rule)

yeah, you are right "* Long code snippets must be posted via a snippet website(links below), posting pictures of code and posting long snippets in the group is not allowed." And based on this "unreasonable rule", sending such pictures are allowed. (sadly, people get banned for what you decided to set as rule)

can we develop a game using c programming "DINASOUR game"? any answer's?

Hey, can I ask here a simple c question that I'm struggling with mathematcly?

Let's give it a go. I told the people here about mathematics to the people here last weekend - it was funny.

I didn't understand the calculation that making to show how many equal numbers...

Online C Compiler https://www.programiz.com/c-programming/online-compiler/

I didn't understand the calculation that making to show how many equal numbers...

What exactly are you wanting to do count some things?

I didn't understand how mathematcly everything is happening... I understand what everything dose but not logecly with the order

You understand line 11 and 12?

I didn't understand the calculation that making to show how many equal numbers...

OK, but why do I calculate this in that specific order: evenDigitNum += evenDigitNumPos * digit; evenDigitNumPos *= 10; evenDigitCount++

You are counting even digit nums and making a number which has only even digits as individual numbers Like if a number is 1234 You'll have 42 as even even digit number

Yes, I understand what the code is doing.. I just missing the math logic behind that.. It's hard for me to write the math in the code Cuz I'm always cunfuse what to do

Do you have an exact question which is being solved by the code?

Write a program that picks up a number from the user and prints the amount of even digits. For example for the number 16537 the program will print 1, because only the digit 6 is even. emphasis: ⦁ Check various inputs including end cases such as: single number, 0 and negative number.