libssh2_error() will free the previous error message if needed, but
if the last error message needs to be freed, it is not being done
so. The following patches fix the problem for me. In scp.c I null
the error pointers after libssh2_error() to prevent double freeing.
Index: src/scp.c
===================================================================
RCS file: /cvsroot/libssh2/libssh2/src/scp.c,v
retrieving revision 1.16
diff -u -r1.16 scp.c
--- src/scp.c 5 Jul 2007 15:31:19 -0000 1.16
+++ src/scp.c 18 Jul 2007 18:00:48 -0000
@@ -188,6 +188,7 @@
}
libssh2_error(session,
LIBSSH2_ERROR_SCP_PROTOCOL, session-
>scpRecv_err_msg, 1);
+ session->scpRecv_err_msg = NULL;
goto scp_recv_error;
}
@@ -640,6 +641,7 @@
}
libssh2_error(session, LIBSSH2_ERROR_SCP_PROTOCOL,
session->scpSend
_err_msg, 1);
+ session->scpSend_err_msg = NULL;
goto scp_send_error;
}
}
Index: src/session.c
===================================================================
RCS file: /cvsroot/libssh2/libssh2/src/session.c,v
retrieving revision 1.47
diff -u -r1.47 session.c
--- src/session.c 22 Jun 2007 16:46:36 -0000 1.47
+++ src/session.c 18 Jul 2007 18:00:48 -0000
@@ -805,7 +805,18 @@
if (session->scpSend_command) {
LIBSSH2_FREE(session, session->scpSend_command);
}
+ if (session->scpRecv_err_msg) {
+ LIBSSH2_FREE(session, session->scpRecv_err_msg);
+ }
+ if (session->scpSend_err_msg) {
+ LIBSSH2_FREE(session, session->scpSend_err_msg);
+ }
+ /* Free the error message, if we ar supposed to */
+ if (session->err_msg && session->err_should_free) {
+ LIBSSH2_FREE(session, session->err_msg);
+ }
+
/* Cleanup any remaining packets */
while (session->packets.head) {
LIBSSH2_PACKET *tmp = session->packets.head;
--
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