netbsd 1.4Y (-current) Alpha (ELF library system)
apache 1.3.12
php 3.0.16

apachectl start (w/o php directives) works fine
w/ php loadmodules etc. core dumps:

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This GDB was configured as "alpha--netbsd"...
Core was generated by `httpd'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/libexec/ld.elf_so...done.
Reading symbols from /usr/lib/libcrypt.so.0...done.
Reading symbols from /usr/lib/libc.so.12...done.
Reading symbols from /usr/pkg/lib/httpd/mod_php3.so...done.
Reading symbols from /usr/lib/libz.so.0...done.
#0  0x160105ab4 in _rtld_unref_dag ()
(gdb) bt
#0  0x160105ab4 in _rtld_unref_dag ()
warning: Hit heuristic-fence-post without finding
warning: enclosing function for address 0x1ffffd558
This warning occurs if you are debugging a function without any symbols
(for example, in a stripped executable).  In that case, you may wish to
increase the size of the search with the `set heuristic-fence-post' command.

Otherwise, you told GDB there was a function where there isn't one, or
(more likely) you have encountered a bug in GDB.
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