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handle c99 flexible array members less hackily

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This commit is contained in:
Joe Soroka 2011-03-18 17:50:42 -07:00
parent 06a7c415a9
commit 17571298f3
1 changed files with 18 additions and 1 deletions
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19
tccgen.c
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@ -5044,6 +5044,17 @@ static void decl_initializer_alloc(CType *type, AttributeDef *ad, int r,
ParseState saved_parse_state = {0}; ParseState saved_parse_state = {0};
TokenString init_str; TokenString init_str;
Section *sec; Section *sec;
Sym *flexible_array;
flexible_array = NULL;
if ((type->t & VT_BTYPE) == VT_STRUCT) {
Sym *field;
field = type->ref;
while (field && field->next)
field = field->next;
if (field->type.t & VT_ARRAY && field->type.ref->c < 0)
flexible_array = field;
}
size = type_size(type, &align); size = type_size(type, &align);
/* If unknown size, we must evaluate it before /* If unknown size, we must evaluate it before
@ -5053,7 +5064,7 @@ static void decl_initializer_alloc(CType *type, AttributeDef *ad, int r,
literals). It also simplifies local literals). It also simplifies local
initializers handling */ initializers handling */
tok_str_new(&init_str); tok_str_new(&init_str);
if (size < 0) { if (size < 0 || flexible_array) {
if (!has_init) if (!has_init)
error("unknown type size"); error("unknown type size");
/* get all init string */ /* get all init string */
@ -5099,6 +5110,8 @@ static void decl_initializer_alloc(CType *type, AttributeDef *ad, int r,
if (size < 0) if (size < 0)
error("unknown type size"); error("unknown type size");
} }
if (flexible_array)
size += flexible_array->type.ref->c * pointed_size(&flexible_array->type);
/* take into account specified alignment if bigger */ /* take into account specified alignment if bigger */
if (ad->aligned) { if (ad->aligned) {
if (ad->aligned > align) if (ad->aligned > align)
@ -5250,6 +5263,10 @@ static void decl_initializer_alloc(CType *type, AttributeDef *ad, int r,
tok_str_free(init_str.str); tok_str_free(init_str.str);
restore_parse_state(&saved_parse_state); restore_parse_state(&saved_parse_state);
} }
/* patch flexible array member size back to -1, */
/* for possible subsequent similar declarations */
if (flexible_array)
flexible_array->type.ref->c = -1;
} }
no_alloc: ; no_alloc: ;
} }