weird error with nmh

Ian FREISLICH ianf at
Mon Jun 25 06:09:09 UTC 2007

Gary Jennejohn wrote:
> I'm using exmh with nmh on a freshly installed AMD64-current:
> 	7.0-CURRENT FreeBSD 7.0-CURRENT #4: Sat Jun 23 19:29:01 CEST
> 2007
> nmh uses its own version of strcasecmp() because in many cases it
> passes NULL pointers to it and must check for that.
> However, somehow the version in libc gets used rather than the version
> from nmh and calling e.g. repl results in a SIGSEGV because the NULL
> pointer is dereferenced.
> I was forced to rename the routine to nmhstrcasecmp() all over the
> place. After that repl works.
> My question - why isn't the version in nmh overriding the version in
> libc? Am I misunderstanding something here?

I traced this problem to the recent gcc import and then ran out of
time to debug further.  Glad that you've got furter than I did.

It seems that strcasemp is defined in the repl binary:
08061abb T strcasecmp
         U strcat@@FBSD_1.0
         U strchr@@FBSD_1.0
         U strcmp@@FBSD_1.0
         U strcpy@@FBSD_1.0
         U strdup@@FBSD_1.0
         U strerror@@FBSD_1.0

So I'm really not sure why the linker is choosing libc's version
over this one.


Ian Freislich

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