updated for version 7.4.497
Problem: With some regexp patterns the NFA engine uses many states and
becomes very slow. To the user it looks like Vim freezes.
Solution: When the number of states reaches a limit fall back to the old
engine. (Christian Brabandt)
diff --git a/src/testdir/bench_re_freeze.in b/src/testdir/bench_re_freeze.in
new file mode 100644
index 0000000..7b1bfa3
--- /dev/null
+++ b/src/testdir/bench_re_freeze.in
@@ -0,0 +1,13 @@
+Test for Benchmarking RE engine
+
+STARTTEST
+:so small.vim
+:if !has("reltime") | qa! | endif
+:set nocp cpo&vim
+:so bench_re_freeze.vim
+:call Measure('samples/re.freeze.txt', '\s\+\%#\@<!$', '+5')
+:/^" Benchmark/,$w! benchmark.out
+:qa!
+ENDTEST
+
+" Benchmark_results: