[LCP]Regex Questions

[ianezz at sodalia.it]

Chuck Martin, aggrappandosi alla tastiera per non cadere, ha scritto:

 > That makes it sound like preg in the above synopsis is allocated by
 > regcomp. 


AFAIK:

1) you have to allocate struc preg (either via malloc() or on stack).

2) regcomp() allocates other ancillary structures (for the compiled
   version of the regexp), and stores their pointer in some fields of
   the preg structure you passed.

3) regfree() should deallocate such ancillary structures.

4) then you can free() struct preg, if you used malloc().

freeing preg without a regfree() first should result in a leak.

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