make/3.80 dumps core using '-t' with more than 1 target

[Richard H. Broberg]

platform is sparc-sun-solaris/2.8
make built with gcc/3.2.2

here is the backtrace:

skunk :make-3.80 % gdb ./make /system/tmp/core
GNU gdb 5.3
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This GDB was configured as "sparc-sun-solaris2.8"...
Core was generated by `make -I/system/build/head/buildsvc/03030710.34/include 
VERSION=03030710.34 PACK'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/lib/libkstat.so.1...done.
Loaded symbols for /usr/lib/libkstat.so.1
Reading symbols from /usr/lib/librt.so.1...done.
Loaded symbols for /usr/lib/librt.so.1
Reading symbols from /usr/lib/libnsl.so.1...done.
Loaded symbols for /usr/lib/libnsl.so.1
Reading symbols from /usr/lib/libsocket.so.1...done.
Loaded symbols for /usr/lib/libsocket.so.1
Reading symbols from /usr/lib/libc.so.1...done.
Loaded symbols for /usr/lib/libc.so.1
Reading symbols from /usr/lib/libaio.so.1...done.
Loaded symbols for /usr/lib/libaio.so.1
Reading symbols from /usr/lib/libdl.so.1...done.
Loaded symbols for /usr/lib/libdl.so.1
Reading symbols from /usr/lib/libmp.so.2...done.
Loaded symbols for /usr/lib/libmp.so.2
Reading symbols from /usr/platform/SUNW,Ultra-60/lib/libc_psr.so.1...done.
Loaded symbols for /usr/platform/SUNW,Ultra-60/lib/libc_psr.so.1
#0  0x00027e34 in notice_finished_file (file=0x73618) at remake.c:790
790               for (i = file->cmds->ncommand_lines; i > 0; --i)
(gdb) where
#0  0x00027e34 in notice_finished_file (file=0x73618) at remake.c:790
#1  0x00028658 in remake_file (file=0x73618) at remake.c:1061
#2  0x00027b78 in update_file_1 (file=0x73618, depth=3) at remake.c:690
#3  0x00026d34 in update_file (file=0x51c00, depth=2) at remake.c:310
#4  0x00027fe4 in check_dep (file=0x73618, depth=2, this_mtime=1, 
    must_make_ptr=0xffbed9a4) at remake.c:857
#5  0x000272c8 in update_file_1 (file=0x586b8, depth=1) at remake.c:463
#6  0x00026d34 in update_file (file=0x51c00, depth=0) at remake.c:310
#7  0x0002698c in update_goal_chain (goals=0x681a0, makefiles=0)
    at remake.c:157
#8  0x0002091c in main (argc=10, argv=0xffbee89c, envp=0x8) at main.c:1946
(gdb) 

----

the problem is that 'file->cmds' is NULL, on the second iteration through
this loop.

here is how I ran it:

make -t

here is my makefile:

------------------------------------------------------------
all:    a

a:
        echo $@

------------------------------------------------------------

the problem doesn't happen if I just do 'make a'; it has to
be a target which causes a dependency to be created.

(strictly speaking my stack trace above is from when I ran it on a
_real_ makefile, but I didn't recapture the output (it was the same)
after I created the much smaller test makefile and targets above)