Hello, My server daemon works fine on most machines however on one I am getting: malloc.c:3074: sYSMALLOc: Assertion `(old_top == (((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size) >= (unsigned long)((((__builtin_offsetof (struct mall...
Take the following snippet: 1 #include <stdio.h> 2 #include <stdlib.h> 3 int foo(char [6]); 4 5 int main(void) { 6 char* bar="hello"; 7 return foo(bar); 8 } 9 10 int foo(char f[6]) { 11 return EXIT_SUCCESS; 12 } 13 What is the right technical term for "char [6]" on line 3? I call it "type and...
Which library should I use to parse C/C++ source code file? I need to parse source file, calculate how much useful strings inside, how much 'for' blocks, 'if' blocks, how much comments inside. I also may need to insert a comment or small piece of code after each 'for' block. Is there any libraries? May be any library included in Micros...
Hey all im building this application in which i have a client represented by a thread, running in loop (until it receives the instruction to terminate) trying to access a critical section of data in the server. When the first client connects to the server, he owns the lock to that mutex. all the subsequent connections are put to a hold...
In our application (older parts) we alter calls to malloc (and realloc) and free so our own implementations are called instead of the standard runtime ones, e.g. #define malloc(s) OurMalloc(s) #define free(p) OurFree(p) This works quite good (for newer C++ code we simply implement global new and delete operators, so the C++ solution...
I have this: #if sizeof(int) #error Can't use sizeof in a #if #endif I get this compiler error: missing binary operator before token "(" Why can't I use the sizeof operator here? ...
Possible Duplicates: printf(%d %d %d\n,++a, a++,a) output problem Parameter evaluation order before a function calling in C #include<stdio.h> main() { int a=10; printf("\n %d %d", a, a++); //11 10 a=10; printf("\n %d %d", a++, a); //10 11 a=10; printf("\n %d %d %d ", a, a++,++a); //12 11 12 } after ...
I have been using ! (logical negation) in C and in other languages, I am curious does anyone know how to make your own ! function? or have a creative way of making one? ...
Hey, I am simply trying to merge a .reg file into my registry using a very basic c++ program. The code is as follows: #include <iostream> #include <iomanip> #include <string> #include <fstream> #include <stdlib.h> #include <cstdlib> #include <stdio.h> #include <windows.h> using namespace std; int main() { string file = "regedit.e...
Can I make a function int bitParity(int x) that returns 1 if x contains an odd number of 0's using only these operators? ! ~ & ^ | + << >> ...
[Edit] Note: These projects are projects that I have copied and renamed. Not sure if that would have anything to do with it. I am using the directx sdk and just playing around with it. I was trying to blit a image on to the screen by loading a external file. For some reason it does not work when I build it and run in debug. But If I go ...
Hello, I read this piece of macro(C code) and was confused in decoding it to know what it defines. What does it define? #define sram (*((unsigned char (*)[1]) 0)) -AD ...
Hi! I know this won'T work because the variable x gets destroyed when the function returns: int* myFunction() { int x = 4; return &x; } so how do I correctly return a pointer to something I create within the function, and what do I have to take care with? How do I avoid memory leaks? I've also used malloc: int* myFunction2() { ...
Here's a simple C file: #include <stdio.h> #include <stdlib.h> int main() { printf("hi there!\n"); return 0; } Compiling with gcc -ansi -pedantic -pedantic-errors gives this: In file included from /usr/include/i386/_structs.h:38, from /usr/include/machine/_structs.h:31, from /usr/include/sys/_struct...
Could someone please point me to an opensource H264 encoding library (written with C/C++) that is not licensed under GPL? It is for not commercial app creation of cource. I just do not want to open its sources. ...
When I was first introduced to C I was told to always declare my variables at the top of the function. Now that I have a strong grasp of the language I am focusing my efforts on coding style, particularly limiting the scope of my variables. I have read this SO question on the benefits to limiting the scope and I came across an interesti...
Forgive me if this comes across as a trivial question - I'm usually a control systems guy (plc's and automation) but have found myself involved in some embedded micro-controller and PC projects lately. Let's say I have a function that accepts a pointer to an array of 'command bytes', typically 5 or 10 bytes in length, like so: char...
Hi I am working on small parser and "equation solver" in C, part of this process is to do arithmetical operations on tokens. Each token contains void* pointer to numerical data, and enum, which defines type of data. This is example of the function, which creates new token by adding two others tokens. In order to do so, I need to che...
Hi there, does anybody know a website or a paper where the sizes of C data types were compared on different machines? I'm interested in values of some 'big' machines like a System z or the like. And: Is there an upper bound of bytes that the biggest native datatype on any machine can have and is it always of the type complex long double...
I am trying to implement an eqivilent version of perl's chomp() function in C and I have come across a corner case where a string literal passed as the argument will cause a segmentation fault (rightfully so). Example chomp("some literal string\n"); Is there a defined way in C99 to detect wether or not my function was passed a string ...