[PATCH 1/3] dfa: count the number of states reset

[Norihiro Tanaka]

Hi,

I propose three patches intended to be applied to Gawk for dfa.

First, it counts reset of dfa states.  If the dfa state is reset many
times, an enormous number of dfa states are considered necessary for the
pattern, and it causes slowdown.  Especially Gawk tends to be specified
with complicated patterns as a case exemplified in
http://lists.gnu.org/archive/html/bug-gawk/2017-07/msg00002.html.  I
intend dfa is invalidated dynamically for such pattern.

Second, take dfacopysyntax() which only exists dfa in Gawk into
dfa in gnulib.

Third, suppress warning by compiler.

Thanks,
Norihiro

0001-dfa-count-the-number-of-states-reset.patch
Description: Text document

0002-dfa-clearly-copy-the-members-of-struct-DFA.patch
Description: Text document

0003-dfa-removal-of-unused-function.patch
Description: Text document