tree 59492583ba5142db27838d26c1f19d4c0e91c32e
parent 05077ad52f0f255cc5d64b15874d483fbed08775
author Thierry FOURNIER <tfournier@exceliance.fr> 1416824082 +0100
committer Willy Tarreau <w@1wt.eu> 1416840142 +0100
encoding latin1

BUG/MEDIUM: pattern: don't load more than once a pattern list.

A memory optimization can use the same pattern expression for many
equal pattern list (same parse method, index method and index_smp
method).

The pattern expression is returned by "pattern_new_expr", but this
function dont indicate if the returned pattern is already in use.

So, the caller function reload the list of patterns in addition with
the existing patterns. This behavior is not a problem with tree indexed
pattern, but it grows the lists indexed patterns.

This fix add a "reuse" flag in return of the function "pattern_new_expr".
If the flag is set, I suppose that the patterns are already loaded.

This fix must be backported into 1.5.
(cherry picked from commit 315ec4217f912f6cc8fcf98624d852f9cd8399f9)