QMK Firmware 0.6.436
Making gergo with keymap buttery

avr-gcc (GCC) 9.2.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiling: keyboards/gergo/matrix.c                                                                 [OK]
Compiling: keyboards/gergo/gergo.c                                                                  [OK]
Compiling: keyboards/gergo/keymaps/buttery/keymap.c                                                keyboards/gergo/keymaps/buttery/keymap.c: In function 'process_ready_chords':
keyboards/gergo/keymaps/buttery/keymap.c:3570:9: error: 'chord_storage.keycodes_hash' may be used uninitialized in this function [-Werror=maybe-uninitialized]
 3570 |         silence_keycode_hash_array(chord->keycodes_hash);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
 [ERRORS]
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make[1]: *** [tmk_core/rules.mk:380: .build/obj_gergo_buttery/keyboards/gergo/keymaps/buttery/keymap.o] Error 1
Make finished with errors
make: *** [Makefile:560: gergo:buttery] Error 1