// { dg-do assemble }
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// { dg-do assemble }
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// g++ 1.37.1 bug 900322_01
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// g++ 1.37.1 bug 900322_01
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// ** Old, obsolete commentary:
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// ** Old, obsolete commentary:
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// **************************************************************************
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// **************************************************************************
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// The ANSI C standard, in section 3.1.2.5 (first paragraph) differentiates
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// The ANSI C standard, in section 3.1.2.5 (first paragraph) differentiates
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// types into three disjoint sets, i.e object types, function types, and
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// types into three disjoint sets, i.e object types, function types, and
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// incomplete types.
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// incomplete types.
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// Also in 3.1.2.5 (page 24) the standard says that the element type of
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// Also in 3.1.2.5 (page 24) the standard says that the element type of
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// an array type is an object type.
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// an array type is an object type.
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// Later in that same section the standard also notes that array types with
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// Later in that same section the standard also notes that array types with
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// unknown size are considered incomplete types (page 25). (Struct & union
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// unknown size are considered incomplete types (page 25). (Struct & union
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// types which have only been "forward declared" are also incomplete types.)
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// types which have only been "forward declared" are also incomplete types.)
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// Some experts infer this to mean that it is not legal to specify or to
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// Some experts infer this to mean that it is not legal to specify or to
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// construct an array *type* whose element type is an incomplete type.
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// construct an array *type* whose element type is an incomplete type.
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// This interpretation suggests that the statements indicated below contain
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// This interpretation suggests that the statements indicated below contain
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// errors.
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// errors.
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// g++ fails to flag all of the indicated statements with errors (even when
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// g++ fails to flag all of the indicated statements with errors (even when
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// the -pedantic option is used).
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// the -pedantic option is used).
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// **************************************************************************
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// **************************************************************************
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// The above commentary is wrong. (jason 1998/11/13)
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// The above commentary is wrong. (jason 1998/11/13)
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// In fact, the lines marked OK are well-formed; the prohibition is only
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// In fact, the lines marked OK are well-formed; the prohibition is only
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// against forming array types with multiple unknown bounds. This prohibition
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// against forming array types with multiple unknown bounds. This prohibition
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// is found in 8.3.4 [dcl.array].
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// is found in 8.3.4 [dcl.array].
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// It is also ill-formed to create an object of incomplete type.
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// It is also ill-formed to create an object of incomplete type.
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// keywords: incomplete types, arrays, element types
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// keywords: incomplete types, arrays, element types
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extern int extern_two_d [] []; // { dg-error "" } invalid declaration
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extern int extern_two_d [] []; // { dg-error "" } invalid declaration
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int tenative_two_d [] []; // { dg-error "" } caught by g++
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int tenative_two_d [] []; // { dg-error "" } caught by g++
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static int static_two_d [] []; // { dg-error "" } caught by g++
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static int static_two_d [] []; // { dg-error "" } caught by g++
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int (*pointer_to_two_d)[][]; // { dg-error "" } invalid declaration
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int (*pointer_to_two_d)[][]; // { dg-error "" } invalid declaration
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void function_0 (int arg [] []) { // { dg-error "" } invalid declaration
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void function_0 (int arg [] []) { // { dg-error "" } invalid declaration
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}
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}
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typedef int int_one_d_type [];
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typedef int int_one_d_type [];
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typedef int_one_d_type int_two_d_type[];// { dg-error "" } invalid declaration
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typedef int_one_d_type int_two_d_type[];// { dg-error "" } invalid declaration
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struct s;
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struct s;
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extern struct s extern_s_array [10]; // OK
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extern struct s extern_s_array [10]; // OK
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struct s tenative_s_array [10]; // { dg-error "" } object with incomplete type
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struct s tenative_s_array [10]; // { dg-error "" } object with incomplete type
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static struct s static_s_array [10]; // { dg-error "" } object with incomplete type
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static struct s static_s_array [10]; // { dg-error "" } object with incomplete type
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struct s (*pointer_to_s_array) []; // OK
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struct s (*pointer_to_s_array) []; // OK
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void function_1 (struct s arg []) { // OK
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void function_1 (struct s arg []) { // OK
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}
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}
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typedef struct s s_type;
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typedef struct s s_type;
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typedef s_type s_one_d_type [10]; // OK
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typedef s_type s_one_d_type [10]; // OK
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int main () { return 0; }
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int main () { return 0; }
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