Wrong cyclomatic complexity calculation?

[ryoqun]

Hi,

Well, just a quick question. Divergent from the header comment, P is missing in the code: https://github.com/ephox-gcc-plugins/cyclomatic_complexity/blob/master/cyc_complexity_plugin.c#L36

As far as my vague understanding, any return statements in C should be counted as exit nodes from the function, shouldn't are?

Is this intentional?

Ref: torvalds/linux@0dae776

[ryoqun]

Hmm, my understanding for basic blocks seems wrong.. https://en.wikipedia.org/wiki/Basic_block

If GCC's basic block is implemented as the wikipedia page says, there should always be a single and one block for exit; thus P always is 1.

Sorry for bothering you; maybe just a explicit comment about that might be helpful. :)