[glibc] nptl: Handle NULL abstime [BZ #26394]

[glibc] nptl: Handle NULL abstime [BZ #26394]

[H.J. Lu]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cb7e7a5ca1d6d25d59bc038bdc09630e507c41e5

commit cb7e7a5ca1d6d25d59bc038bdc09630e507c41e5
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Sat Aug 15 11:06:35 2020 -0700

    nptl: Handle NULL abstime [BZ #26394]
    
    Since abstime passed to pthread_{clock|timed}join_np may be NULL, convert
    to 64 bit abstime only if abstime isn't NULL.

Diff:
---
 nptl/pthread_clockjoin.c | 12 +++++++++---
 nptl/pthread_timedjoin.c | 10 +++++++---
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/nptl/pthread_clockjoin.c b/nptl/pthread_clockjoin.c
index 3cd780f688..0baba1e83d 100644
--- a/nptl/pthread_clockjoin.c
+++ b/nptl/pthread_clockjoin.c
@@ -34,9 +34,15 @@ int
 __pthread_clockjoin_np (pthread_t threadid, void **thread_return,
                         clockid_t clockid, const struct timespec *abstime)
 {
-  struct __timespec64 ts64 = valid_timespec_to_timespec64 (*abstime);
-
-  return __pthread_clockjoin_np64 (threadid, thread_return, clockid, &ts64);
+  if (abstime != NULL)
+    {
+      struct __timespec64 ts64 = valid_timespec_to_timespec64 (*abstime);
+      return __pthread_clockjoin_np64 (threadid, thread_return, clockid,
+				       &ts64);
+    }
+  else
+      return __pthread_clockjoin_np64 (threadid, thread_return, clockid,
+				       NULL);
 }
 #endif
 weak_alias (__pthread_clockjoin_np, pthread_clockjoin_np)
diff --git a/nptl/pthread_timedjoin.c b/nptl/pthread_timedjoin.c
index 6164ae7060..6ade58853c 100644
--- a/nptl/pthread_timedjoin.c
+++ b/nptl/pthread_timedjoin.c
@@ -34,9 +34,13 @@ int
 __pthread_timedjoin_np (pthread_t threadid, void **thread_return,
                         const struct timespec *abstime)
 {
-  struct __timespec64 ts64 = valid_timespec_to_timespec64 (*abstime);
-
-  return __pthread_timedjoin_np64 (threadid, thread_return, &ts64);
+  if (abstime != NULL)
+    {
+      struct __timespec64 ts64 = valid_timespec_to_timespec64 (*abstime);
+      return __pthread_timedjoin_np64 (threadid, thread_return, &ts64);
+    }
+  else
+    return __pthread_timedjoin_np64 (threadid, thread_return, NULL);
 }
 #endif
 weak_alias (__pthread_timedjoin_np, pthread_timedjoin_np)