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* ports.c (scm_close_port): Make sure the port is open before

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trying to close it.
This commit is contained in:
Jim Blandy 1997-12-03 17:30:24 +00:00
parent a1a4b8ed86
commit 3c1750f377
1 changed files with 2 additions and 1 deletions
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3
libguile/ports.c
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@ -418,7 +418,8 @@ scm_close_port (port)
port = SCM_COERCE_OUTPORT (port);
SCM_ASSERT (SCM_NIMP (port) && SCM_PORTP (port), port, SCM_ARG1, s_close_port);
SCM_ASSERT (SCM_NIMP (port) && SCM_OPPORTP (port), port, SCM_ARG1,
s_close_port);
if (SCM_CLOSEDP (port))
return SCM_BOOL_F;
i = SCM_PTOBNUM (port);