--- graphviz-2.46.1/lib/vmalloc/Makefile.am.orig	2021-02-18 17:44:23.990163756 +0100
+++ graphviz-2.46.1/lib/vmalloc/Makefile.am	2021-02-18 17:46:38.615438829 +0100
@@ -9,4 +9,5 @@
 	vmopen.c \
 	vmstrdup.c
 
+libvmalloc_C_la_CFLAGS = -fno-strict-aliasing
 EXTRA_DIST = vmalloc.vcxproj*