Well, I managed to get a little more output by also changing -g to -g3 in my
app.
```
[ 6.852191] [00006703] libusbx: debug [handle_events] poll() returned 1
[ 6.852199] [00006703] libusbx: debug [op_handle_events] checking fd 7 with
revents = 0
nf is disconnected ? ;)
[ 6.852203] [00006703] libusbx: debug [op_handle_events] checking fd 9 with
revents = 0
[ 6.852206] [00006703] libusbx: debug [op_handle_events] checking fd 14 with
revents = 1
Recycling
[ 6.852212] [00006703] libusbx: debug [darwin_handle_callback] handling
interrupt completion with kernel status -536870165
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000000
[Switching to process 59188 thread 0x6703]
0x00000001001ea7b8 in usbi_handle_transfer_completion (itransfer=0x1021eaf80,
status=LIBUSB_TRANSFER_CANCELLED) at libusbi.h:128
128 entry->next->prev = entry->prev;
(gdb) where
#0 0x00000001001ea7b8 in usbi_handle_transfer_completion
(itransfer=0x1021eaf80, status=LIBUSB_TRANSFER_CANCELLED) at libusbi.h:128
#1 0x00000001001ed60b in op_handle_events (ctx=0x102137ba8, fds=0x105228d60,
nfds=86150496, num_ready=86150496) at darwin_usb.c:1799
#2 0x00000001001ea5e3 in handle_events (ctx=0x102137a90, tv=<value temporarily
unavailable, due to optimizations>) at io.c:2042
Previous frame inner to this frame (gdb could not unwind past this frame)
Current language: auto; currently c
(gdb)
```
---
Reply to this email directly or view it on GitHub:
https://github.com/libusbx/libusbx/issues/121#issuecomment-21095818
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