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Fix crash when marking closed custom bytevector port
* libguile/r6rs-ports.c (cbp_mark): A closed port will have had its stream destroyed, so don't dereference the stream in that case. Patch by Mike Gran.
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1 changed files with 4 additions and 1 deletions
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@ -211,7 +211,10 @@ static SCM
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cbp_mark (SCM port)
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{
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/* Mark the underlying method and object vector. */
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return (SCM_PACK (SCM_STREAM (port)));
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if (SCM_OPENP (port))
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return SCM_PACK (SCM_STREAM (port));
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else
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return SCM_BOOL_F;
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}
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static off_t
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