Fix clang errors in makefile

Author: RossSmyth

test/Makefile

@@ -12,6 +12,8 @@ ifeq ($(findstring clang, $(CC)), clang)
 E = -Weverything
 CFLAGS += $E -Wno-unknown-warning-option -Wno-missing-prototypes
 CFLAGS += -Wno-unused-macros -Wno-padded -Wno-missing-noreturn
+CFLAGS += -Wno-unsafe-buffer-usage -Wno-reserved-identifier
+CFLAGS += -Wno-extra-semi-stmt
 endif
 CFLAGS += -std=c99 -pedantic -Wall -Wextra -Werror
 #CFLAGS += -Wconversion #disabled because if falsely complains about the isinf and isnan macros