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Example in https://github.com/i3/i3/actions/runs/18260895234/job/51988635887?pr=6502 `i3-log-for-124-move.t`: ``` ../libi3/font.c:332:9: runtime error: signed integer overflow: 2147483641 + 11 cannot be represented in type 'int' #0 0x5611ce962d65 in draw_text_xcb ../libi3/font.c:332 #1 0x5611ce962d65 in draw_text ../libi3/font.c:376 #2 0x5611ce95de20 in draw_util_text ../libi3/draw_util.c:219 #3 0x5611ce947e7a in x_draw_decoration ../src/x.c:751 #4 0x5611ce94f93a in x_push_node ../src/x.c:1097 #5 0x5611ce94e9d8 in x_push_node ../src/x.c:1204 #6 0x5611ce94e9d8 in x_push_node ../src/x.c:1204 #7 0x5611ce94e9d8 in x_push_node ../src/x.c:1204 #8 0x5611ce952e9b in x_push_changes ../src/x.c:1373 #9 0x5611ce922d1f in tree_render ../src/tree.c:468 #10 0x5611ce8d1bbb in handle_run_command ../src/ipc.c:220 #11 0x5611ce8c87fe in ipc_receive_message ../src/ipc.c:1481 #12 0x7effc262b64a in ev_invoke_pending (/lib/x86_64-linux-gnu/libev.so.4+0x564a) (BuildId: cfcffb10ff16734dcc7d31d002a90940abff0323) #13 0x7effc262f22e in ev_run (/lib/x86_64-linux-gnu/libev.so.4+0x922e) (BuildId: cfcffb10ff16734dcc7d31d002a90940abff0323) #14 0x5611ce809d48 in ev_loop /usr/include/ev.h:841 #15 0x5611ce809d48 in main ../src/main.c:1229 #16 0x7effc1e41ca7 (/lib/x86_64-linux-gnu/libc.so.6+0x29ca7) (BuildId: def5460e3cee00bfee25b429c97bcc4853e5b3a8) #17 0x7effc1e41d64 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29d64) (BuildId: def5460e3cee00bfee25b429c97bcc4853e5b3a8) #18 0x5611ce80e770 in _start (/usr/src/i3/build/i3+0x230770) (BuildId: 181abde9a3dd28a8a4be68b90b9b710c8e280633) SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior ../libi3/font.c:332:9 ``` Unrelated but I fixed the build fails in `next` because of a false-positive: ``` In file included from ../include/all.h:40, from ../src/commands.c:10: ../src/commands.c: In function ‘cmd_floating’: ../include/log.h:30:33: error: ‘%s’ directive argument is null [-Werror=format-overflow=] 30 | #define DLOG(fmt, ...) debuglog("%s:%s:%d - " fmt, __FILE__, __FUNCTION__, __LINE__, ##__VA_ARGS__) | ^~~~~~~~~~~~~ ../src/commands.c:1193:13: note: in expansion of macro ‘DLOG’ 1193 | DLOG("should switch mode to %s\n", floating_mode); | ^~~~ cc1: all warnings being treated as errors ninja: build stopped: subcommand failed. ```