[dmd-internals] What should I do to reduce this for a bugzilla entry?

[Jason House]

Am I correct in assuming the easiest way to find out what's causing this
issue is to make a custom build of dmd with -DLOG go GFLAGS in
linux.mak?

$ dmd | head -n 1
Digital Mars D Compiler v2.046

$ dmd -c *.d -offoo
dmd: interpret.c:190: Expression*
FuncDeclaration::interpret(InterState*, Expressions*, Expression*):
Assertion `istate' failed.
Aborted

$ dmd -v -c *.d -offoo
binary    dmd
version   v2.046
config    /usr/local/bin/dmd.conf
parse     board
parse     color
parse     fast_map
parse     fast_random
parse     fast_stack
parse     hash
parse     move
parse     player
parse     testing
parse     utils
parse     vertex
importall board
import    object	(/usr/local/bin/../include/druntime/import/object.di)
import    std.date	(/usr/local/bin/../include/phobos/std/date.d)
import    std.stdio	(/usr/local/bin/../include/phobos/std/stdio.d)
import    core.stdc.stdio
(/usr/local/bin/../include/druntime/import/core/stdc/stdio.d)
import    core.stdc.config
(/usr/local/bin/../include/druntime/import/core/stdc/config.d)
import    core.stdc.stddef
(/usr/local/bin/../include/druntime/import/core/stdc/stddef.d)
import    core.stdc.stdarg
(/usr/local/bin/../include/druntime/import/core/stdc/stdarg.d)
import    std.stdiobase
(/usr/local/bin/../include/phobos/std/stdiobase.d)
import    core.memory
(/usr/local/bin/../include/druntime/import/core/memory.di)
import    core.stdc.errno
(/usr/local/bin/../include/druntime/import/core/stdc/errno.d)
import    core.stdc.stdlib
(/usr/local/bin/../include/druntime/import/core/stdc/stdlib.d)
import    core.stdc.string
(/usr/local/bin/../include/druntime/import/core/stdc/string.d)
import    core.stdc.wchar_
(/usr/local/bin/../include/druntime/import/core/stdc/wchar_.d)
import    core.stdc.time
(/usr/local/bin/../include/druntime/import/core/stdc/time.d)
import    core.stdc.stdint
(/usr/local/bin/../include/druntime/import/core/stdc/stdint.d)
import    core.stdc.signal
(/usr/local/bin/../include/druntime/import/core/stdc/signal.d)
import    std.algorithm
(/usr/local/bin/../include/phobos/std/algorithm.d)
import    std.c.string	(/usr/local/bin/../include/phobos/std/c/string.d)
import    std.array	(/usr/local/bin/../include/phobos/std/array.d)
import    std.c.stdio	(/usr/local/bin/../include/phobos/std/c/stdio.d)
import    std.contracts
(/usr/local/bin/../include/phobos/std/contracts.d)
import    std.conv	(/usr/local/bin/../include/phobos/std/conv.d)
import    std.ctype	(/usr/local/bin/../include/phobos/std/ctype.d)
import    std.math	(/usr/local/bin/../include/phobos/std/math.d)
import    core.stdc.math
(/usr/local/bin/../include/druntime/import/core/stdc/math.d)
import    std.range	(/usr/local/bin/../include/phobos/std/range.d)
import    std.traits	(/usr/local/bin/../include/phobos/std/traits.d)
import    std.typetuple
(/usr/local/bin/../include/phobos/std/typetuple.d)
import    std.typecons	(/usr/local/bin/../include/phobos/std/typecons.d)
import    std.metastrings
(/usr/local/bin/../include/phobos/std/metastrings.d)
import    std.functional
(/usr/local/bin/../include/phobos/std/functional.d)
import    std.string	(/usr/local/bin/../include/phobos/std/string.d)
import    core.exception
(/usr/local/bin/../include/druntime/import/core/exception.di)
import    core.sys.posix.unistd
(/usr/local/bin/../include/druntime/import/core/sys/posix/unistd.d)
import    core.sys.posix.config
(/usr/local/bin/../include/druntime/import/core/sys/posix/config.d)
import    core.sys.posix.inttypes
(/usr/local/bin/../include/druntime/import/core/sys/posix/inttypes.d)
import    core.stdc.inttypes
(/usr/local/bin/../include/druntime/import/core/stdc/inttypes.d)
import    core.sys.posix.sys.types
(/usr/local/bin/../include/druntime/import/core/sys/posix/sys/types.d)
import    std.encoding	(/usr/local/bin/../include/phobos/std/encoding.d)
import    std.format	(/usr/local/bin/../include/phobos/std/format.d)
import    std.bitmanip	(/usr/local/bin/../include/phobos/std/bitmanip.d)
import    std.intrinsic
(/usr/local/bin/../include/phobos/std/intrinsic.d)
import    std.stdarg	(/usr/local/bin/../include/phobos/std/stdarg.d)
import    std.utf	(/usr/local/bin/../include/phobos/std/utf.d)
import    std.system	(/usr/local/bin/../include/phobos/std/system.d)
import    std.regex	(/usr/local/bin/../include/phobos/std/regex.d)
import    std.outbuffer
(/usr/local/bin/../include/phobos/std/outbuffer.d)
import    std.c.stdlib	(/usr/local/bin/../include/phobos/std/c/stdlib.d)
import    std.c.stdarg	(/usr/local/bin/../include/phobos/std/c/stdarg.d)
import    std.uni	(/usr/local/bin/../include/phobos/std/uni.d)
import    std.file	(/usr/local/bin/../include/phobos/std/file.d)
import    std.path	(/usr/local/bin/../include/phobos/std/path.d)
import    std.process	(/usr/local/bin/../include/phobos/std/process.d)
import    std.c.process
(/usr/local/bin/../include/phobos/std/c/process.d)
import    std.c.stddef	(/usr/local/bin/../include/phobos/std/c/stddef.d)
import    core.sys.posix.sys.wait
(/usr/local/bin/../include/druntime/import/core/sys/posix/sys/wait.d)
import    core.sys.posix.signal
(/usr/local/bin/../include/druntime/import/core/sys/posix/signal.d)
import    core.sys.posix.pwd
(/usr/local/bin/../include/druntime/import/core/sys/posix/pwd.d)
import    std.regexp	(/usr/local/bin/../include/phobos/std/regexp.d)
import    core.sys.posix.dirent
(/usr/local/bin/../include/druntime/import/core/sys/posix/dirent.d)
import    core.sys.posix.fcntl
(/usr/local/bin/../include/druntime/import/core/sys/posix/fcntl.d)
import    core.sys.posix.sys.stat
(/usr/local/bin/../include/druntime/import/core/sys/posix/sys/stat.d)
import    core.sys.posix.time
(/usr/local/bin/../include/druntime/import/core/sys/posix/time.d)
import    core.sys.posix.sys.time
(/usr/local/bin/../include/druntime/import/core/sys/posix/sys/time.d)
import    core.sys.posix.sys.select
(/usr/local/bin/../include/druntime/import/core/sys/posix/sys/select.d)
import    core.sys.posix.utime
(/usr/local/bin/../include/druntime/import/core/sys/posix/utime.d)
import    core.sys.posix.stdio
(/usr/local/bin/../include/druntime/import/core/sys/posix/stdio.d)
import    std.dateparse
(/usr/local/bin/../include/phobos/std/dateparse.d)
import    std.cstream	(/usr/local/bin/../include/phobos/std/cstream.d)
import    std.stream	(/usr/local/bin/../include/phobos/std/stream.d)
import    std.mmfile	(/usr/local/bin/../include/phobos/std/mmfile.d)
import    core.sys.posix.sys.mman
(/usr/local/bin/../include/druntime/import/core/sys/posix/sys/mman.d)
import    std.random	(/usr/local/bin/../include/phobos/std/random.d)
import    std.c.time	(/usr/local/bin/../include/phobos/std/c/time.d)
import    std.numeric	(/usr/local/bin/../include/phobos/std/numeric.d)
import    core.thread
(/usr/local/bin/../include/druntime/import/core/thread.di)
import    core.sys.posix.semaphore
(/usr/local/bin/../include/druntime/import/core/sys/posix/semaphore.d)
import    core.sys.posix.pthread
(/usr/local/bin/../include/druntime/import/core/sys/posix/pthread.d)
import    core.sys.posix.sched
(/usr/local/bin/../include/druntime/import/core/sys/posix/sched.d)
import    core.sys.posix.stdlib
(/usr/local/bin/../include/druntime/import/core/sys/posix/stdlib.d)
importall color
importall fast_map
importall fast_random
importall fast_stack
importall hash
importall move
importall player
importall testing
importall utils
importall vertex
semantic  board
import    crc32	(/usr/local/bin/../include/phobos/crc32.d)
dmd: interpret.c:190: Expression*
FuncDeclaration::interpret(InterState*, Expressions*, Expression*):
Assertion `istate' failed.
Aborted