make RE engine threadsafe; -Dusethreads builds, tests on Solaris,

and runs regexes in 1000s of threads without crashing; also fixed
statcache not being thread-local

p4raw-id: //depot/perl@1448

1 files changed, 2 insertions, 0 deletions

diff --git a/ext/re/re.xs b/ext/re/re.xs
index 7b9fb379cd..2d0f18700a 100644
--- a/ext/re/re.xs
+++ b/ext/re/re.xs
@@ -14,6 +14,7 @@ static int oldfl;
 static void
 deinstall(void)
 {
+    dTHR;
     regexecp = &regexec_flags;
     regcompp = &pregcomp;
     if (!oldfl)
@@ -23,6 +24,7 @@ deinstall(void)
 static void
 install(void)
 {
+    dTHR;
     regexecp = &my_regexec;
     regcompp = &my_regcomp;
     oldfl = debug & R_DB;