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-rw-r--r--src/lib/entropy/unix_procs/unix_procs.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/lib/entropy/unix_procs/unix_procs.cpp b/src/lib/entropy/unix_procs/unix_procs.cpp
index 3c641da70..c6ad6a700 100644
--- a/src/lib/entropy/unix_procs/unix_procs.cpp
+++ b/src/lib/entropy/unix_procs/unix_procs.cpp
@@ -72,7 +72,9 @@ void UnixProcessInfo_EntropySource::poll(Entropy_Accumulator& accum)
accum.add(::getppid(), 0.0);
accum.add(::getuid(), 0.0);
accum.add(::getgid(), 0.0);
+#if defined(BOTAN_TARGET_OS_HAS_GETSID)
accum.add(::getsid(0), 0.0);
+#endif
accum.add(::getpgrp(), 0.0);
struct ::rusage usage;