diff -Nurd gmt-6.1.1.orig/src/gmt_common_sighandler.c gmt-6.1.1/src/gmt_common_sighandler.c
--- gmt-6.1.1.orig/src/gmt_common_sighandler.c	2020-09-01 21:29:44
+++ gmt-6.1.1/src/gmt_common_sighandler.c	2023-07-23 18:37:08
@@ -58,6 +58,8 @@
 # if __DARWIN_UNIX03
 #  ifdef __x86_64__
 #   define UC_IP(uc) ((void *) (uc)->uc_mcontext->__ss.__rip)
+#  elif __arm64__	/* Apple Silicon, e.g. M1 */
+#   define UC_IP(uc) ((void *) (uc)->uc_mcontext->__ss.__pc)
 #  else
 #   define UC_IP(uc) ((void *) (uc)->uc_mcontext->__ss.__eip)
 #  endif