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Fix type parsing

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the check on incomplete struct/union/enum types was too early,
disallowing mixed specifiers and qualifiers.  Simply rely on
the size (->c) field for that.  See testcases.
This commit is contained in:
Michael Matz 2016-03-24 15:44:01 +01:00
parent aa1ed616eb
commit f85db99ff0
4 changed files with 19 additions and 7 deletions
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15
tccgen.c
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@ -2200,7 +2200,7 @@ ST_FUNC int type_size(CType *type, int *a)
*a = 8;
#endif
return 8;
} else if (bt == VT_INT || bt == VT_ENUM || bt == VT_FLOAT) {
} else if (bt == VT_INT || bt == VT_FLOAT) {
*a = 4;
return 4;
} else if (bt == VT_SHORT) {
@ -2209,6 +2209,10 @@ ST_FUNC int type_size(CType *type, int *a)
} else if (bt == VT_QLONG || bt == VT_QFLOAT) {
*a = 8;
return 16;
} else if (bt == VT_ENUM) {
*a = 4;
/* Enums might be incomplete, so don't just return '4' here. */
return type->ref->c;
} else {
/* char, void, function, _Bool */
*a = 1;
@ -2902,7 +2906,7 @@ static void parse_attribute(AttributeDef *ad)
}
/* enum/struct/union declaration. u is either VT_ENUM or VT_STRUCT */
static void struct_decl(CType *type, int u, int tdef)
static void struct_decl(CType *type, int u)
{
int a, v, size, align, maxalign, c, offset, flexible;
int bit_size, bit_pos, bsize, bt, lbit_pos, prevbt;
@ -2923,8 +2927,7 @@ static void struct_decl(CType *type, int u, int tdef)
if (s->type.t != a)
tcc_error("invalid type");
goto do_decl;
} else if (tok >= TOK_IDENT && !tdef)
tcc_error("unknown struct/union/enum");
}
} else {
v = anon_sym++;
}
@ -3229,14 +3232,14 @@ static int parse_btype(CType *type, AttributeDef *ad)
}
break;
case TOK_ENUM:
struct_decl(&type1, VT_ENUM, t & (VT_TYPEDEF | VT_EXTERN));
struct_decl(&type1, VT_ENUM);
basic_type2:
u = type1.t;
type->ref = type1.ref;
goto basic_type1;
case TOK_STRUCT:
case TOK_UNION:
struct_decl(&type1, VT_STRUCT, t & (VT_TYPEDEF | VT_EXTERN));
struct_decl(&type1, VT_STRUCT);
goto basic_type2;
/* type modifiers */

2
tests/tests2/61_undefined_enum.expect
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@ -1 +1 @@
61_undefined_enum.c:1: error: unknown struct/union/enum
61_undefined_enum.c:1: error: unknown type size

9
tests/tests2/81_types.c Normal file
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@ -0,0 +1,9 @@
/* The following are all valid decls, even though some subtypes
are incomplete. */
enum E *e;
const enum E *e1;
enum E const *e2;
struct S *s;
const struct S *s1;
struct S const *s2;
int main () { return 0; }

0
tests/tests2/81_types.expect Normal file
View File