[Cryptography] GOTO Considered Harmful

[Phillip Hallam-Baker]

I don't write code in C. I have my own personal language that is
implemented as C macros

#typedef int PUBLIC_ENTRY;
#define PRIVATE_ENTRY static int

#define BEGIN  << stuff >>
#define END  return 0; _fail:  << stuff >> return -1;

#define CHECK_STATUS(x) if (x != 0) goto _fail;

So all my functions look like

PUBLIC_ENTRY function () {
BEGIN;

CHECK_STATUS (some_function);

END
}


If I had other people coding I would check their stuff with a preprocessor
that rejects any code that has the string goto in as a code smell.

(thats not the actual code, from memory as i don't take any source with me
when crossing national boundaries but you get the idea).

I don't trust ||= either...


The reason for PUBLIC_ENTRY is because I have a tool that looks for that
string to generate the function declaration headers from it.

Exception handling in C....
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