add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/scripts/kconfig/preprocess.c
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@@ -2,6 +2,7 @@
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 //
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 // Copyright (C) 2018 Masahiro Yamada <yamada.masahiro@socionext.com>
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+#include <ctype.h>
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 #include <stdarg.h>
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 #include <stdbool.h>
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 #include <stdio.h>
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@@ -9,10 +10,12 @@
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 #include <string.h>
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 #include "list.h"
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+#include "lkc.h"
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 #define ARRAY_SIZE(arr)		(sizeof(arr) / sizeof((arr)[0]))
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 static char *expand_string_with_args(const char *in, int argc, char *argv[]);
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+static char *expand_string(const char *in);
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 static void __attribute__((noreturn)) pperror(const char *format, ...)
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 {
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@@ -393,6 +396,9 @@
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 		p++;
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 	}
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+
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+	if (new_argc >= FUNCTION_MAX_ARGS)
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+		pperror("too many function arguments");
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 	new_argv[new_argc++] = prev;
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 	/*
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@@ -548,15 +554,14 @@
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 	return __expand_string(&in, is_end_of_str, argc, argv);
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 }
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-char *expand_string(const char *in)
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+static char *expand_string(const char *in)
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 {
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 	return expand_string_with_args(in, 0, NULL);
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 }
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 static bool is_end_of_token(char c)
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 {
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-	/* Why are '.' and '/' valid characters for symbols? */
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-	return !(isalnum(c) || c == '_' || c == '-' || c == '.' || c == '/');
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+	return !(isalnum(c) || c == '_' || c == '-');
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 }
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 /*