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gcc version 8.3.0 (Debian 8.3.0-6) ../src/nvim/ex_docmd.c: In function ‘commands_array’: ../src/nvim/ex_docmd.c:10192:36: warning: ‘%ld’ directive output may be truncated writing between 1 and 19 bytes into a region of size 10 [-Wformat-truncation=] snprintf(str, sizeof(str), "%" PRId64, (int64_t)cmd->uc_def); ^~~ ../src/nvim/ex_docmd.c:10192:37: note: format string is defined here snprintf(str, sizeof(str), "%" PRId64, (int64_t)cmd->uc_def); ../src/nvim/ex_docmd.c:10192:36: note: directive argument in the range [0, 9223372036854775807] snprintf(str, sizeof(str), "%" PRId64, (int64_t)cmd->uc_def); ^~~ ../src/nvim/ex_docmd.c:10192:9: note: ‘snprintf’ output between 2 and 20 bytes into a destination of size 10 snprintf(str, sizeof(str), "%" PRId64, (int64_t)cmd->uc_def); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../src/nvim/ex_docmd.c:10205:36: warning: ‘%ld’ directive output may be truncated writing between 1 and 19 bytes into a region of size 10 [-Wformat-truncation=] snprintf(str, sizeof(str), "%" PRId64, (int64_t)cmd->uc_def); ^~~ ../src/nvim/ex_docmd.c:10205:37: note: format string is defined here snprintf(str, sizeof(str), "%" PRId64, (int64_t)cmd->uc_def); ../src/nvim/ex_docmd.c:10205:36: note: directive argument in the range [0, 9223372036854775807] snprintf(str, sizeof(str), "%" PRId64, (int64_t)cmd->uc_def); ^~~ ../src/nvim/ex_docmd.c:10205:9: note: ‘snprintf’ output between 2 and 20 bytes into a destination of size 10 snprintf(str, sizeof(str), "%" PRId64, (int64_t)cmd->uc_def); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../src/nvim/spell.c: In function ‘did_set_spelllang’: ../src/nvim/spell.c:1631:61: warning: ‘%s’ directive output may be truncated writing up to 254 bytes into a region of size 84 [-Wformat-truncation=] "autocmd VimEnter * call spellfile#LoadFile('%s')|set spell", ^~ ../src/nvim/spell.c:2063:25: spell_load_lang(lang); ~~~~ ../src/nvim/spell.c:1630:7: note: ‘snprintf’ output between 57 and 311 bytes into a destination of size 128 snprintf(autocmd_buf, sizeof(autocmd_buf), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ "autocmd VimEnter * call spellfile#LoadFile('%s')|set spell", ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ lang); ~~~~~ ../src/nvim/window.c: In function ‘win_rotate’: ../src/nvim/window.c:1780:22: warning: ‘wp2’ may be used uninitialized in this function [-Wmaybe-uninitialized] wp2->w_pos_changed = true; ^ ../src/nvim/window.c:1779:22: warning: ‘wp1’ may be used uninitialized in this function [-Wmaybe-uninitialized] wp1->w_pos_changed = true;