Re: Patch for Bison 3.1 and VC2015

[Paul Eggert]

Akim Demaille wrote:
> why didn’t you use alloca?

It's common that alloca does not check for stack overflow, so alloca (N) is 
unwise if N is unbounded. I did consider using alloca if N is small, but even 
then it's a win to use malloc in the typical case where uniqstr_concat generates 
a new string, because in that case malloc needs to be called anyway and using 
alloca would mean an unnecessary copy.

> Joel’s trick for UNIQSTR_CONCAT was amazing :)

I was hoping you'd say that about *my* trick for UNIQSTR_CONCAT. Oh well :-)