gmake hanging on Solaris 2.7

[tom_honermann]

I'm running into a problem with two gmake processes hanging (parent/child)
on a Sun Sparc running Solaris 2.7 using gmake 3.79.1.

I'm just starting to debug this now, I'm wondering if anyone has seen this
or has some hints for me.  Here's the stack traces:

Parent:
   (/opt/SUNWspro/bin/../WS6U1/bin/sparcv9/dbx) where
   current thread: address@hidden
   =>[1] _vfork(0x191e, 0x0, 0xff2b7658, 0x0, 0x77636f6e, 0x2f62696e), at
   0xff297f34
     [2] 0x22adc(0x10be80, 0x0, 0xffbee52c, 0x10be80, 0x1, 0x1ab129), at
   0x22adb
     [3] reap_children(0x1, 0x0, 0xffffffff, 0x10be80, 0x0, 0x1919), at
   0x22008
     [4] new_job(0x6ca68, 0xffbee535, 0x2f1a, 0x4, 0x10be80, 0x69a98), at
   0x23498
     [5] execute_file_commands(0x6ca68, 0x6, 0x0, 0x0, 0x1f49f8, 0x6c911),
   at 0x169d8
     [6] 0x328dc(0x6ca68, 0x1f49f8, 0xe6f7dbd, 0x40000003, 0xffbee72c,
   0x6e), at 0x328db
     [7] 0x316f4(0x6ca68, 0x0, 0x116140, 0x0, 0x0, 0x1), at 0x316f3
     [8] 0x301a0(0x6ca68, 0x4, 0xeb6bab6, 0xd566d9f3, 0x6ca68, 0x0), at
   0x3019f
     [9] 0x31e20(0x28000000, 0x6ca68, 0x0, 0x1, 0xffbee8e4, 0x6d), at
   0x31e1f
     [10] 0x30a40(0x1f2690, 0x0, 0x64a80, 0x64ab0, 0x0, 0x1), at 0x30a3f
     [11] 0x301a0(0x1f2690, 0x2, 0x0, 0x3, 0x1f2690, 0x0), at 0x3019f
     [12] 0x31e20(0x28000000, 0x1f2690, 0x0, 0x1, 0xffbeea9c, 0x0), at
   0x31e1f
     [13] 0x30a40(0x62db0, 0x0, 0x0, 0x63a58, 0x0, 0x1), at 0x30a3f
     [14] 0x301a0(0x62db0, 0x0, 0xffbeeb61, 0x5bb78, 0x62db0, 0x0), at
   0x3019f
     [15] update_goal_chain(0x61220, 0x0, 0xeb6b6a0, 0x80000003, 0x0,
   0x61220), at 0x2fb14
     [16] main(0x5cd88, 0x0, 0xffbef8d0, 0xffbeffb7, 0x1c, 0x0), at 0x26bb4

Child:
   (/opt/SUNWspro/bin/../WS6U1/bin/sparcv9/dbx) where
   current thread: address@hidden
   =>[1] ___lwp_mutex_lock(0xff2f0c58, 0x0, 0x0, 0x0, 0x0, 0x0), at
   0xff2979f8
     [2] _sched_lock(0xff2ec55c, 0x1ba78, 0x0, 0x0, 0x0, 0x0), at
   0xff2cd984
     [3] thr_sigsetmask(0x3, 0xffbee408, 0x0, 0xff2ec55c, 0x0, 0x57f5c), at
   0xff2d0b50
     [4] _sigprocmask(0x3, 0xffbee408, 0x0, 0x0, 0x0, 0x0), at 0xff2d92e4
     [5] unblock_sigs(0x0, 0x1, 0xff2b7658, 0x0, 0x77636f6e, 0x2f62696e),
   at 0x22450
     [6] 0x22b04(0x10be80, 0x0, 0xffbee52c, 0x10be80, 0x1, 0x1ab129), at
   0x22b03
     [7] reap_children(0x1, 0x0, 0xffffffff, 0x10be80, 0x0, 0x1919), at
   0x22008
     [8] new_job(0x6ca68, 0xffbee535, 0x2f1a, 0x4, 0x10be80, 0x69a98), at
   0x23498
     [9] execute_file_commands(0x6ca68, 0x6, 0x0, 0x0, 0x1f49f8, 0x6c911),
   at 0x169d8
     [10] 0x328dc(0x6ca68, 0x1f49f8, 0xe6f7dbd, 0x40000003, 0xffbee72c,
   0x6e), at 0x328db
     [11] 0x316f4(0x6ca68, 0x0, 0x116140, 0x0, 0x0, 0x1), at 0x316f3
     [12] 0x301a0(0x6ca68, 0x4, 0xeb6bab6, 0xd566d9f3, 0x6ca68, 0x0), at
   0x3019f
     [13] 0x31e20(0x28000000, 0x6ca68, 0x0, 0x1, 0xffbee8e4, 0x6d), at
   0x31e1f
     [14] 0x30a40(0x1f2690, 0x0, 0x64a80, 0x64ab0, 0x0, 0x1), at 0x30a3f
     [15] 0x301a0(0x1f2690, 0x2, 0x0, 0x3, 0x1f2690, 0x0), at 0x3019f
     [16] 0x31e20(0x28000000, 0x1f2690, 0x0, 0x1, 0xffbeea9c, 0x0), at
   0x31e1f
     [17] 0x30a40(0x62db0, 0x0, 0x0, 0x63a58, 0x0, 0x1), at 0x30a3f
     [18] 0x301a0(0x62db0, 0x0, 0xffbeeb61, 0x5bb78, 0x62db0, 0x0), at
   0x3019f
     [19] update_goal_chain(0x61220, 0x0, 0xeb6b6a0, 0x80000003, 0x0,
   0x61220), at 0x2fb14
     [20] main(0x5cd88, 0x0, 0xffbef8d0, 0xffbeffb7, 0x1c, 0x0), at 0x26bb4

Tom.