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(scm_drain_input): Bug fix: only access the port after checking that

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it indeed is one.
This commit is contained in:
Marius Vollmer 2003-11-21 17:13:25 +00:00
parent dd6f4cff17
commit 331bacec19
1 changed files with 3 additions and 2 deletions
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5
libguile/ports.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001 Free Software Foundation, Inc.
/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -327,10 +327,11 @@ SCM_DEFINE (scm_drain_input, "drain-input", 1, 0, 0,
#define FUNC_NAME s_scm_drain_input
{
SCM result;
scm_t_port *pt = SCM_PTAB_ENTRY (port);
scm_t_port *pt;
long count;
SCM_VALIDATE_OPINPORT (1,port);
pt = SCM_PTAB_ENTRY (port);
count = pt->read_end - pt->read_pos;
if (pt->read_buf == pt->putback_buf)