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/freebsd-10.2-release/contrib/openpam/include/security/
H A Dpam_appl.hdiff 205441 Mon Mar 22 11:05:13 MDT 2010 des Merge upstream r432:

pam_end() already contains a NULL check, and it is not unreasonable to
call it with a NULL pamh in a cleanup / error-handling situation. Remove
OPENPAM_NONNULL, which may cause gcc to optimize away the NULL check.

This fixes a potential NULL pointer dereference in error-handling code
in passwd(1).

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