Bugs #407805, was updated on 2001-03-11 18:25
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Category: run-time
Group: None
Status: Open
Priority: 1
Submitted By: Brian D. Carlstrom
Assigned to: Brian D. Carlstrom
Summary: dynload.c and bsd/waitcodes.scm
Initial Comment:
From: Alan Bawden <Alan@LCS.MIT.EDU>
Sender: Alan@LCS.MIT.EDU
To: scsh-bugs@martigny.ai.mit.edu
Subject: dynload.c and bsd/waitcodes.scm
Date: Wed, 8 Jan 1997 01:38:28 -0500
Two problems to report in scsh 0.4.4:
------- #1
scsh-0.4.4/dynload.c contains the following code:
newhandle=dlopen(pathname, S48_DLOPEN_MODE);
#if defined(__NetBSD__) || defined(__FreeBSD__)
if (newhandle == -1) {
fprintf(stderr, " dynamic_load of %s can't
dlopen %s",
sharedobjname, pathname);
return -1;
};
#else
if (!newhandle) {
fprintf(stderr, " dynamic_load of %s can't
dlopen %s: %s ",
sharedobjname, pathname, dlerror());
return -1;
};
#endif
First off, the manual page for dlopen() on FreeBSD
version 2.1.0
claims that dlopen returns a null pointer if it
fails. That manual page
also claims that dlerror() is supported. I do seem to
recall that previous
versions of FreeBSD had some undocumented dynamic
loading support, so
perhaps this code is a hold-over from those old days.
Probably autoconf
should be figuring this out for you somehow...
Second off, this code generates a compile-time warning
because of the
comparison between newhandle and -1. Since this is
the -only- warning I
got when installing scsh, you might want to achieve
perfection by replacing
that "-1" with "(void *) -1"!
------- #2
In scsh-0.4.4/scsh/bsd/waitcodes.scm the line:
(not (=
#x7F)) ; Not suspended.
should probably read:
(not (= #x7F
termsig)) ; Not suspended.
------- EOM
----------------------------------------------------------------------
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