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[qfcc] Allow redefined typedefs if the same type 

This fixes typeredef1, and will allow typeredef2 to pass once the
grammar is sorted out.
This commit is contained in:
Bill Currie 2023-02-04 16:44:48 +09:00
parent e974e9d758
commit 5f22a322df
1 changed files with 10 additions and 2 deletions
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12
tools/qfcc/source/qc-parse.y
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@ -399,7 +399,14 @@ use_type_name (specifier_t spec)
spec.sym = new_symbol (spec.sym->name);
spec.sym->type = spec.type;
spec.sym->sy_type = sy_var;
symtab_addsymbol (current_symtab, spec.sym);
symbol_t *s = symtab_addsymbol (current_symtab, spec.sym);
// a different symbol being returned means that this is a redefinition
// of that symbol in the same scope. However, typedefs to the same type
// are allowed.
if (s != spec.sym && spec.is_typedef && s->sy_type == sy_type
&& type_same (s->type, spec.type)) {
spec.sym = s;
}
return !!spec.sym->table;
}
@ -420,7 +427,8 @@ check_specifiers (specifier_t spec)
bug (0, "wha? %p %p", spec.type, spec.sym);
} else {
// a type name (id, typedef, etc) was used as a variable name.
// this is allowed in C, so long as it's in a different scope
// this is allowed in C, so long as it's in a different scope,
// or the types are the same
if (!use_type_name (spec)) {
error (0, "%s redeclared as different kind of symbol",
spec.sym->name);