SECONDEXPANSION segmentation fault with make 3.82.90

[Martin d'Anjou]

Hello,

I have found a segmentation fault executing make. This makefile makes
little sense, but it reproduces the segfault:

.SECONDEXPANSION:
sim_base_rgg := just_a_name
sim_base_src := a
sim_base_f := a a a

sim_%.f: $${sim_$$*_f}
        echo $@

sim_%.src: $${sim_$$*_src}
        echo $@

sim_%: \
        $$(if $$(sim_$$*_src),sim_%.src) \
  $$(if $$(sim_$$*_f),sim_%.f) \
  $$(if $$(sim_$$*_rgg),$$(sim_$$*_rgg).s)
        echo $@

To reproduce:
$ touch a
$ make sim_base
*** glibc detected *** /home/martin/Downloads/make/make: free(): invalid
pointer: 0x000000000092a540 ***

The backtrace in gdb looks like this:
#0  0x00007ffff7645425 in __GI_raise (sig=<optimized out>) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1  0x00007ffff7648b8b in __GI_abort () at abort.c:91
#2  0x00007ffff768339e in __libc_message (do_abort=2, fmt=0x7ffff778d008
"*** glibc detected *** %s: %s: 0x%s ***\n")
    at ../sysdeps/unix/sysv/linux/libc_fatal.c:201
#3  0x00007ffff768db96 in malloc_printerr (action=3, str=0x7ffff7789913
"free(): invalid pointer", ptr=<optimized out>)
    at malloc.c:5018
#4  0x0000000000411457 in pattern_search (file=<optimized out>,
archive=<optimized out>, depth=1, recursions=0)
    at implicit.c:974
#5  0x000000000041229f in try_implicit_rule (file=0x656af0, depth=1) at
implicit.c:45
#6  0x000000000041f98b in update_file_1 (depth=<optimized out>,
file=0x656af0) at remake.c:491
#7  update_file (file=0x656af0, depth=0) at remake.c:315
#8  0x000000000041ff77 in update_goal_chain (goals=0x6624b0) at remake.c:155
#9  0x0000000000407334 in main (argc=4, argv=0x7fffffffea68,
envp=<optimized out>) at main.c:2516



This segfault was reproduced on RHEL 6.3 and on an up-to-date linux mint 13
host.

Is this a bug? If so, can someone post a patch please?

Thanks,
Martin