running with valgrind and without memcheck segfaults on moving window

Running in shell valgrind ./wayst &> segfault_withvalgrind2.txt yields

```txt ==353346== Memcheck, a memory error detector ==353346== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al. ==353346== Using Valgrind-3.17.0 and LibVEX; rerun with -h for copyright info ==353346== Command: ./wayst ==353346== [[33mwarning[m] '/home/misterspoon/.config/wayst/config' - No such file or directory ==353346== Invalid read of size 4 ==353346== at 0x49E99E6: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E16: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5ae0580 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E16: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E16: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Invalid read of size 4 ==353346== at 0x49E99EC: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E16: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5ae0580 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E16: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E16: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Invalid read of size 4 ==353346== at 0x49E99E6: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E42: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5b01e70 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E42: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E42: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Invalid read of size 4 ==353346== at 0x49E99EC: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E42: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5b01e70 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E42: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E42: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Invalid read of size 4 ==353346== at 0x49E99E6: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E70: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5b23780 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E70: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E70: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Invalid read of size 4 ==353346== at 0x49E99EC: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E70: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5b23780 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E70: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E70: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Invalid read of size 4 ==353346== at 0x49E99E6: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E9E: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5b450b0 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E9E: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E9E: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Invalid read of size 4 ==353346== at 0x49E99EC: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E9E: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5b450b0 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E9E: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119E9E: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Invalid read of size 4 ==353346== at 0x49E99E6: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119F87: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5b648d0 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119F87: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119F87: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Invalid read of size 4 ==353346== at 0x49E99EC: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119F87: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5b648d0 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119F87: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119F87: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Invalid read of size 4 ==353346== at 0x49E99E6: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119FBD: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5b84010 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119FBD: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119FBD: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Invalid read of size 4 ==353346== at 0x49E99EC: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119FBD: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5b84010 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119FBD: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x119FBD: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Invalid read of size 4 ==353346== at 0x49E99E6: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x11A080: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5ba3770 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x11A080: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x11A080: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Invalid read of size 4 ==353346== at 0x49E99EC: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x11A080: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5ba3770 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x11A080: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x11A080: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Invalid read of size 4 ==353346== at 0x49E99E6: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x11A120: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5bc2ef0 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x11A120: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x11A120: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Invalid read of size 4 ==353346== at 0x49E99EC: FcPatternDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49DA4F8: FcFontSetDestroy (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115DE9: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x11A120: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x5bc2ef0 is 16 bytes inside a block of size 24 free'd ==353346== at 0x484118B: free (vg_replace_malloc.c:755) ==353346== by 0x115DDC: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x11A120: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Block was alloc'd at ==353346== at 0x48435FF: calloc (vg_replace_malloc.c:1117) ==353346== by 0x49EDFD2: FcFontRenderPrepare (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x49EEB9D: FcFontMatch (in /usr/lib/libfontconfig.so.1.12.0) ==353346== by 0x115CDD: FontconfigContext_get_file (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x11A120: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== ==353346== Warning: noted but unhandled ioctl 0x5441 with no size/direction hints. ==353346== This could cause spurious value errors to appear. ==353346== See README_MISSING_SYSCALL_OR_IOCTL for guidance on writing a proper wrapper. ==353346== Invalid read of size 1 ==353346== at 0x48447B2: strlen (vg_replace_strmem.c:469) ==353346== by 0x4E1B342: strdup (in /usr/lib/libc-2.33.so) ==353346== by 0x16DAB2: wl_surface_handle_leave.lto_priv.0 (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x522FD49: ??? (in /usr/lib/libffi.so.8.1.0) ==353346== by 0x522F266: ??? (in /usr/lib/libffi.so.8.1.0) ==353346== by 0x4D17FF2: ??? (in /usr/lib/libwayland-client.so.0.3.0) ==353346== by 0x4D14562: ??? (in /usr/lib/libwayland-client.so.0.3.0) ==353346== by 0x4D15C8B: wl_display_dispatch_queue_pending (in /usr/lib/libwayland-client.so.0.3.0) ==353346== by 0x16EFC9: WindowWl_events.lto_priv.0 (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x14EF28: App_run.lto_priv.0 (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x1190E2: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== Address 0x0 is not stack'd, malloc'd or (recently) free'd ==353346== ==353346== ==353346== Process terminating with default action of signal 11 (SIGSEGV): dumping core ==353346== Access not within mapped region at address 0x0 ==353346== at 0x48447B2: strlen (vg_replace_strmem.c:469) ==353346== by 0x4E1B342: strdup (in /usr/lib/libc-2.33.so) ==353346== by 0x16DAB2: wl_surface_handle_leave.lto_priv.0 (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x522FD49: ??? (in /usr/lib/libffi.so.8.1.0) ==353346== by 0x522F266: ??? (in /usr/lib/libffi.so.8.1.0) ==353346== by 0x4D17FF2: ??? (in /usr/lib/libwayland-client.so.0.3.0) ==353346== by 0x4D14562: ??? (in /usr/lib/libwayland-client.so.0.3.0) ==353346== by 0x4D15C8B: wl_display_dispatch_queue_pending (in /usr/lib/libwayland-client.so.0.3.0) ==353346== by 0x16EFC9: WindowWl_events.lto_priv.0 (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x14EF28: App_run.lto_priv.0 (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== by 0x1190E2: main (in /home/misterspoon/dev/git/c/wayst/wayst) ==353346== If you believe this happened as a result of a stack ==353346== overflow in your program's main thread (unlikely but ==353346== possible), you can try to increase the size of the ==353346== main thread stack using the --main-stacksize= flag. ==353346== The main thread stack size used in this run was 8388608. ==353346== ==353346== HEAP SUMMARY: ==353346== in use at exit: 7,566,804 bytes in 47,747 blocks ==353346== total heap usage: 105,830 allocs, 58,083 frees, 25,461,490 bytes allocated ==353346== ==353346== LEAK SUMMARY: ==353346== definitely lost: 0 bytes in 0 blocks ==353346== indirectly lost: 0 bytes in 0 blocks ==353346== possibly lost: 5,550,886 bytes in 38,296 blocks ==353346== still reachable: 2,014,218 bytes in 9,450 blocks ==353346== suppressed: 1,700 bytes in 1 blocks ==353346== Rerun with --leak-check=full to see details of leaked memory ==353346== ==353346== For lists of detected and suppressed errors, rerun with: -s ==353346== ERROR SUMMARY: 33 errors from 17 contexts (suppressed: 0 from 0) ```

91861 / wayst

running with valgrind and without memcheck segfaults on moving window #100