--- sbcl-2.6.2/src/runtime/Config.x86-64-sunos.orig	2026-02-27 19:08:09.000000000 +0100
+++ sbcl-2.6.2/src/runtime/Config.x86-64-sunos	2026-03-07 10:26:11.545580250 +0100
@@ -1,5 +1,5 @@
 CC=gcc
-CFLAGS += -m64 -g -Wall -std=gnu89 -D__EXTENSIONS__ -DSVR4 -D_REENTRANT -fno-omit-frame-pointer -D_POSIX_PTHREAD_SEMANTICS
+CFLAGS += -m64 -g -Wall -std=gnu11 -D__EXTENSIONS__ -DSVR4 -D_REENTRANT -fno-omit-frame-pointer -D_POSIX_PTHREAD_SEMANTICS
 LINKFLAGS = -m64 -g
 ASFLAGS = -m64 -Wall
 GREP = ggrep