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When destroying swaynag from within wl_display_dispatch, we cannot
disconnect the display as that will free the queue's event_list.
Free it after running the loop instead.
Fixes this use-after-free:
==7312==ERROR: AddressSanitizer: heap-use-after-free on address 0x612000000110 at pc 0x000000412a9f bp 0x7ffd4e811760 sp 0x7ffd4e811750
READ of size 8 at 0x612000000110 thread T0
#0 0x412a9e in wl_list_empty ../common/list.c:206
#1 0x7f5b58f0d42f in dispatch_queue src/wayland-client.c:1572
#2 0x7f5b58f0d42f in wl_display_dispatch_queue_pending src/wayland-client.c:1815
#3 0x40f465 in swaynag_run ../swaynag/swaynag.c:390
#4 0x407576 in main ../swaynag/main.c:123
#5 0x7f5b58bb9412 in __libc_start_main ../csu/libc-start.c:308
#6 0x404a3d in _start (/opt/wayland/bin/swaynag+0x404a3d)
0x612000000110 is located 208 bytes inside of 320-byte region [0x612000000040,0x612000000180)
freed by thread T0 here:
#0 0x7f5b594ab480 in free (/lib64/libasan.so.5+0xef480)
#1 0x40faff in swaynag_destroy ../swaynag/swaynag.c:454
#2 0x40cbb4 in layer_surface_closed ../swaynag/swaynag.c:82
#3 0x7f5b583e1acd in ffi_call_unix64 (/lib64/libffi.so.6+0x6acd)
previously allocated by thread T0 here:
#0 0x7f5b594aba50 in __interceptor_calloc (/lib64/libasan.so.5+0xefa50)
#1 0x7f5b58f0c902 in wl_display_connect_to_fd src/wayland-private.h:236
(you need a wayland compiled with asan, my wl_list hack, or running
with valgrind to see this trace)
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- Some platforms don't expose kill() unless _POSIX_C_SOURCE is defined.
- fork(), execl(), and setsid() need unistd.h on some platforms.
Basically, this fixes some platform-specific build errors.
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Fixes segfauls for any case where swaynag->outputs was not inititalized
including -h/--help, -v/--version, and invalid arguments.
Sets sane defaults for colors not given. Any color not given will
fallback to the default color values for type error.
Adds support for a hidpi cursor
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