db3acfa547
* c-common.def (COMPOUND_LITERAL_EXPR): New. * c-common.c (c_expand_expr): Handle COMPOUND_LITERAL_EXPR. (c_staticp): New function. * c-common.h (COMPOUND_LITERAL_EXPR_DECL): New. (c_staticp): Declare. * c-typeck.c (default_function_array_conversion, build_unary_op): Don't handle CONSTRUCTOR specially. (lvalue_p, mark_addressable): Handle COMPOUND_LITERAL_EXPR. * c-decl.c (build_compound_literal): New function. * c-tree.h (build_compound_literal): Declare. * c-parse.in (primary): Use build_compound_literal. * c-lang.c (LANG_HOOKS_STATICP): Define. * objc/objc-lang.c (LANG_HOOKS_STATICP): Likewise. * doc/c-tree.texi: Document COMPOUND_LITERAL_EXPR. * doc/extend.texi: Update documentation of compound literals. Fixes PR c/4787. testsuite: * gcc.c-torture/execute/20000722-1.x, gcc.c-torture/execute/20010123-1.x: Remove. * gcc.c-torture/compile/init-3.c: Don't use a compound literal. * gcc.dg/c90-complit-1.c, gcc.dg/c99-complit-1.c, gcc.dg/c99-complit-2.c: New tests. From-SVN: r47629
69 lines
3.1 KiB
C
69 lines
3.1 KiB
C
/* Test for compound literals: in C99 only. Test for invalid uses. */
|
|
/* Origin: Joseph Myers <jsm28@cam.ac.uk> */
|
|
/* { dg-do compile } */
|
|
/* { dg-options "-std=iso9899:1999 -pedantic-errors" } */
|
|
|
|
struct s { int a; int b; };
|
|
union u { int c; int d; };
|
|
|
|
struct si;
|
|
union ui;
|
|
|
|
void
|
|
foo (int a)
|
|
{
|
|
/* The type name must not be incomplete (apart from arrays of unknown
|
|
size), or a function type, or a VLA type. */
|
|
(void) { 1 }; /* { dg-bogus "warning" "warning in place of error" } */
|
|
/* { dg-error "init" "void type" { target *-*-* } 17 } */
|
|
&(struct si) { 1 }; /* { dg-bogus "warning" "warning in place of error" } */
|
|
/* { dg-error "init" "incomplete struct type" { target *-*-* } 19 } */
|
|
&(union ui) { 1 }; /* { dg-bogus "warning" "warning in place of error" } */
|
|
/* { dg-error "init" "incomplete union type" { target *-*-* } 21 } */
|
|
(void (void)) { 0 }; /* { dg-bogus "warning" "warning in place of error" } */
|
|
/* { dg-error "init" "function type" { target *-*-* } 23 } */
|
|
(int [a]) { 1 }; /* { dg-bogus "warning" "warning in place of error" } */
|
|
/* { dg-error "init|variable" "VLA type" { target *-*-* } 25 } */
|
|
/* Initializers must not attempt to initialize outside the object
|
|
declared. */
|
|
(int [1]) { [1] = 2 }; /* { dg-bogus "warning" "warning in place of error" } */
|
|
/* { dg-error "init" "value outside array" { target *-*-* } 29 } */
|
|
(int [1]) { [-1] = 2 }; /* { dg-bogus "warning" "warning in place of error" } */
|
|
/* { dg-error "init" "value outside array" { target *-*-* } 31 } */
|
|
(int [1]) { 0, 1 }; /* { dg-bogus "warning" "warning in place of error" } */
|
|
/* { dg-error "init" "value outside array" { target *-*-* } 33 } */
|
|
}
|
|
|
|
int z;
|
|
|
|
/* Outside a function, initializers must be constant. */
|
|
struct s *s0 = &(struct s) { 0, z }; /* { dg-bogus "warning" "warning in place of error" } */
|
|
/* { dg-error "init" "non-const" { target *-*-* } 40 } */
|
|
int sz = sizeof((struct s) { 0, z }); /* { dg-bogus "warning" "warning in place of error" } */
|
|
/* { dg-error "init" "non-const" { target *-*-* } 42 } */
|
|
|
|
/* Compound literals aren't themselves constant expressions. */
|
|
int x = (int) { 0 }; /* { dg-bogus "warning" "warning in place of error" } */
|
|
/* { dg-error "init" "non-const" { target *-*-* } 46 } */
|
|
|
|
/* Nor are they suitable structure or union initializers
|
|
outside a function. */
|
|
struct s s1 = (struct s) { 0, 1 }; /* { dg-bogus "warning" "warning in place of error" } */
|
|
/* { dg-error "init" "struct bad init" { target *-*-* } 51 } */
|
|
union u u1 = (union u) { 0 }; /* { dg-bogus "warning" "warning in place of error" } */
|
|
/* { dg-error "init" "union bad init" { target *-*-* } 53 } */
|
|
|
|
/* They aren't suitable for array initializers, either inside or outside
|
|
a function. */
|
|
int y[2] = (int [2]) { 0, 1 }; /* { dg-bogus "warning" "warning in place of error" } */
|
|
/* { dg-error "init" "array bad init" { target *-*-* } 58 } */
|
|
|
|
void
|
|
bar (void)
|
|
{
|
|
struct s s2 = (struct s) { 0, 1 };
|
|
union u u2 = (union u) { 0 };
|
|
int z[2] = (int [2]) { 0, 1 }; /* { dg-bogus "warning" "warning in place of error" } */
|
|
/* { dg-error "init" "array bad init" { target *-*-* } 66 } */
|
|
}
|