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New Development Library Testing

Development libraries perform differently in each system. Never assume a library performs the same in your system as what's on the developer's website or what's in their documentation. Always verify the specific features of a library by debugging your own small test programs.

1. Make a new source file "test.c" for verifying a function of a library then compile it using the command "gcc -Wall test.c -o test":
#include    <header file>
int main(int argc, char **argv)
{
    int   foo;    /* return value */
    if (argc != 3)
    {
        printf("usage: test <function value 1> <function value 2>");
        return -1;
    }
    foo = function(argv[1], argv[2]);
    ...
    printf(" ", foo);
    return 0;
}

2. Run the command strace to see how the function performs its operations:
strace -C -f -i -tt -T -v test;
strace -C -f -i -tt -T -p <running process pid> -u <username> -v;

Do you have a suggestion about how to improve this blog? Let's talk about it. Contact me at David.Brenner.Jr@Gmail.com or 720-584-5229.

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