diff options
| author | Andreas Ruprecht <andreas.ruprecht@fau.de> | 2015-07-12 09:41:50 +0200 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.com> | 2015-08-19 17:05:39 +0200 |
| commit | c2264564df3d70723c6d6eb96c18b99698c112fd (patch) | |
| tree | 92846df16c80a4b8f85666bbfb953ed959ca75fc /scripts/kconfig | |
| parent | 35ffd08d9bc92b5d56f6536406c379d82a757e7a (diff) | |
| download | linux-c2264564df3d70723c6d6eb96c18b99698c112fd.tar.gz | |
kconfig: warn of unhandled characters in Kconfig commands
In Kconfig, definitions of options take the following form:
"<COMMAND> <PARAM> <PARAM> ...". COMMANDs and PARAMs are treated
slightly different by the underlying parser.
While commit 2e0d737fc76f ("kconfig: don't silently ignore unhandled
characters") introduced a warning for unsupported characters around
PARAMs, it does not cover situations where a COMMAND has additional
characters before it.
This change makes Kconfig emit a warning if superfluous characters
are found before COMMANDs. As the 'help' statement sometimes is
written as '---help---', the '-' character would now also be regarded
as unhandled and generate a warning. To avoid that, '-' is added to
the list of allowed characters, and the token '---help---' is included
in the zconf.gperf file.
Reported-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Andreas Ruprecht <andreas.ruprecht@fau.de>
Reviewed-by: Ulf Magnusson <ulfalizer@gmail.com>
Tested-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
Diffstat (limited to 'scripts/kconfig')
| -rw-r--r-- | scripts/kconfig/zconf.gperf | 1 | ||||
| -rw-r--r-- | scripts/kconfig/zconf.l | 20 |
2 files changed, 12 insertions, 9 deletions
diff --git a/scripts/kconfig/zconf.gperf b/scripts/kconfig/zconf.gperf index b6ac02d604f1..ac498f01b449 100644 --- a/scripts/kconfig/zconf.gperf +++ b/scripts/kconfig/zconf.gperf @@ -22,6 +22,7 @@ comment, T_COMMENT, TF_COMMAND config, T_CONFIG, TF_COMMAND menuconfig, T_MENUCONFIG, TF_COMMAND help, T_HELP, TF_COMMAND +---help---, T_HELP, TF_COMMAND if, T_IF, TF_COMMAND|TF_PARAM endif, T_ENDIF, TF_COMMAND depends, T_DEPENDS, TF_COMMAND diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l index 200a3fe30091..c410d257da06 100644 --- a/scripts/kconfig/zconf.l +++ b/scripts/kconfig/zconf.l @@ -66,9 +66,16 @@ static void alloc_string(const char *str, int size) memcpy(text, str, size); text[size] = 0; } + +static void warn_ignored_character(char chr) +{ + fprintf(stderr, + "%s:%d:warning: ignoring unsupported character '%c'\n", + zconf_curname(), zconf_lineno(), chr); +} %} -n [A-Za-z0-9_] +n [A-Za-z0-9_-] %% int str = 0; @@ -106,7 +113,7 @@ n [A-Za-z0-9_] zconflval.string = text; return T_WORD; } - . + . warn_ignored_character(*yytext); \n { BEGIN(INITIAL); current_file->lineno++; @@ -132,8 +139,7 @@ n [A-Za-z0-9_] BEGIN(STRING); } \n BEGIN(INITIAL); current_file->lineno++; return T_EOL; - --- /* ignore */ - ({n}|[-/.])+ { + ({n}|[/.])+ { const struct kconf_id *id = kconf_id_lookup(yytext, yyleng); if (id && id->flags & TF_PARAM) { zconflval.id = id; @@ -146,11 +152,7 @@ n [A-Za-z0-9_] #.* /* comment */ \\\n current_file->lineno++; [[:blank:]]+ - . { - fprintf(stderr, - "%s:%d:warning: ignoring unsupported character '%c'\n", - zconf_curname(), zconf_lineno(), *yytext); - } + . warn_ignored_character(*yytext); <<EOF>> { BEGIN(INITIAL); } |