CODEWITHSUNDEEP
c
Anil Pandey
Anil Pandey

Reputation: 29

How to rename a C function name in its definition at runtime

Can anyone please solve the following problem for me:

Problem: Let say there are two functions foo() and bar() defined as

void bar()
{
    printf("bar\n");
}

void foo()
{
    printf("foo\n");
    bar();
}

So, here I want to change the function name bar to bar_test in its definition but not in calling. This should be runtime and the source code should not be modified.

The expected output is as below:

void bar_test()
{
    printf("bar\n");
}

void foo()
{
    printf("foo\n");
    bar();
}

Thanks

Upvotes: 2

Views: 8408

Answers (1)

Gopi
Gopi

Reputation: 19864

One way would be to have a macro like

#define bar() bar_test()

Now calling bar() by the macro calls bar_test()

The function which is defined should be called as per the standard. There is no option to change the function name during runtime and it doesn't make sense also.

Upvotes: 5

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