6673277: Thread unsafe lazy initialization code in sun.security.provider.certpath.*Checker classes
Summary: make supportedExts variable non-static
Reviewed-by: vinnie
6ce5f4757bde08f7470cbb9f0b46da8f2f3d4f56 jdk7-b24
a3b3ba7d6034dc754b51ddc3d281399ac1cae5f1 jdk7-b25
da43cb85fac1646d6f97e4a35e510bbfdff97bdb jdk7-b26