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I was wondering if there is a way of finding which function called the current function (at runtime) in C.
I know you could use __FUNCTION__ in gcc, but is there a way without using the C preprocessor?
Probably not.
Cheers
No, there isn’t. C isn’t a particularly introspective language – things like the name of a function (or pieces of your call stack) simply aren’t available at runtime in any sane fashion.
If, for some reason, you are looking for a lot of work for very little benefit, then you can build your programs with debug symbols, and you can write stack-walking and debug symbol lookup code. Then you might be able to find this out on the fly. But be careful, because the symbols you’ll see in the debug info will be decorated with type info if you’ve got any C++ involved.
You’ve tagged this post gcc, so the relevant details ARE available, however this falls into the ‘not recommended’ and ‘not guaranteed to be the same between compiler versions’ territory.