Add check_open(sock) to _sockname (#41000)

Not checking could lead to a segfault on closed TCPSockets in getpeername Fixes #40993
JuliaLang · May 31, 2021 · 28e30a3 · 28e30a3
1 parent 0b16e8f
commit 28e30a3
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/stdlib/Sockets/src/Sockets.jl b/stdlib/Sockets/src/Sockets.jl
@@ -806,6 +806,7 @@ socket is connected to. Valid only for connected TCP sockets.
 getpeername(sock::TCPSocket) = _sockname(sock, false)
 
 function _sockname(sock, self=true)
+    sock.status == StatusInit || check_open(sock)
     rport = Ref{Cushort}(0)
     raddress = zeros(UInt8, 16)
     rfamily = Ref{Cuint}(0)