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[qfcc] Catch several useless specifier expressions
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597890dda1
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1 changed files with 26 additions and 1 deletions
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@ -285,6 +285,13 @@ is_anonymous_struct (specifier_t spec)
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return 1;
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}
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static int
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is_null_spec (specifier_t spec)
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{
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static specifier_t null_spec;
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return memcmp (&spec, &null_spec, sizeof (spec)) == 0;
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}
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%}
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%expect 0
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@ -333,7 +340,25 @@ external_def_list
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external_def
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: optional_specifiers external_decl_list ';' { }
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| optional_specifiers ';' { }
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| optional_specifiers ';'
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{
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if (!is_null_spec ($1)) {
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if (!$1.type && !$1.sym) {
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warning (0, "useless specifiers");
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} else if ($1.type && !$1.sym) {
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if (is_anonymous_struct ($1)){
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warning (0, "unnamed struct/union that defines "
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"no instances");
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} else {
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warning (0, "useless type name in empty declaration");
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}
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} else if (!$1.type && $1.sym) {
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bug (0, "wha? %p %p", $1.type, $1.sym);
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} else {
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bug (0, "wha? %p %p", $1.type, $1.sym);
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}
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}
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}
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| optional_specifiers qc_func_params
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{
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type_t **type;
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