/* { dg-do compile } */
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/* { dg-do compile } */
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/* { dg-options "-O -Wall" } */
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/* { dg-options "-O -Wall" } */
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|
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/* C99 6.5.2.3 Structure and union members.
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/* C99 6.5.2.3 Structure and union members.
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If the first expression has qualified type, the result has the so-qualified
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If the first expression has qualified type, the result has the so-qualified
|
version of the type of the designated member. */
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version of the type of the designated member. */
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|
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struct s {_Decimal32 d32; const _Decimal64 d64;};
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struct s {_Decimal32 d32; const _Decimal64 d64;};
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struct sv { volatile _Decimal32 d32; volatile _Decimal64 d64; };
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struct sv { volatile _Decimal32 d32; volatile _Decimal64 d64; };
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union u
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union u
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{
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{
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const _Decimal64 d64;
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const _Decimal64 d64;
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_Decimal32 d32;
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_Decimal32 d32;
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const struct s cs;
|
const struct s cs;
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};
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};
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|
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struct s s;
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struct s s;
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struct sv sv;
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struct sv sv;
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const struct s cs;
|
const struct s cs;
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|
|
union u u;
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union u u;
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const union u cu;
|
const union u cu;
|
|
|
struct s g (struct s s)
|
struct s g (struct s s)
|
{
|
{
|
return s;
|
return s;
|
}
|
}
|
|
|
union u h (union u u)
|
union u h (union u u)
|
{
|
{
|
return u;
|
return u;
|
}
|
}
|
|
|
void f()
|
void f()
|
{
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{
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cs.d32 = 1.23dd; /* { dg-error "assignment of read-only variable" } */
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cs.d32 = 1.23dd; /* { dg-error "assignment of read-only variable" } */
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cs.d64 = 1.23df; /* { dg-error "assignment of read-only variable" } */
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cs.d64 = 1.23df; /* { dg-error "assignment of read-only variable" } */
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s.d64 = 1.23df; /* { dg-error "assignment of read-only member" } */
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s.d64 = 1.23df; /* { dg-error "assignment of read-only member" } */
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|
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s.d32 = 1.23dd;
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s.d32 = 1.23dd;
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u.d32 = 1.23dd;
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u.d32 = 1.23dd;
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|
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u.d64 = 1.23df; /* { dg-error "assignment of read-only member" } */
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u.d64 = 1.23df; /* { dg-error "assignment of read-only member" } */
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u.cs.d32 = 1.23dd; /* { dg-error "assignment of read-only member" } */
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u.cs.d32 = 1.23dd; /* { dg-error "assignment of read-only member" } */
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u.cs.d64 = 1.23df; /* { dg-error "assignment of read-only member" } */
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u.cs.d64 = 1.23df; /* { dg-error "assignment of read-only member" } */
|
|
|
cu.d32 = 1.23dd; /* { dg-error "assignment of read-only variable" } */
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cu.d32 = 1.23dd; /* { dg-error "assignment of read-only variable" } */
|
|
|
cu.d64 = 1.23df; /* { dg-error "assignment of read-only variable" } */
|
cu.d64 = 1.23df; /* { dg-error "assignment of read-only variable" } */
|
cu.cs.d32 = 1.23dd; /* { dg-error "assignment of read-only variable" } */
|
cu.cs.d32 = 1.23dd; /* { dg-error "assignment of read-only variable" } */
|
cu.cs.d64 = 1.23df; /* { dg-error "assignment of read-only variable" } */
|
cu.cs.d64 = 1.23df; /* { dg-error "assignment of read-only variable" } */
|
|
|
/* f().x is a valid postfix expression but is not an lvalue if
|
/* f().x is a valid postfix expression but is not an lvalue if
|
function f() returning a structure or union. */
|
function f() returning a structure or union. */
|
g(s).d32 = 1.23dd; /* { dg-error "lvalue required" } */
|
g(s).d32 = 1.23dd; /* { dg-error "lvalue required" } */
|
h(u).d64 = 1.23df; /* { dg-error "lvalue required" } */
|
h(u).d64 = 1.23df; /* { dg-error "lvalue required" } */
|
|
|
/* Test assignment to volatile structure members. */
|
/* Test assignment to volatile structure members. */
|
sv.d32 = 1.1df;
|
sv.d32 = 1.1df;
|
sv.d64 = 1.1dd;
|
sv.d64 = 1.1dd;
|
}
|
}
|
|
|
|
|
