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c-decl.c (grokdeclarator): Reject extern redeclarations of static variables.

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* c-decl.c (grokdeclarator): Reject extern redeclarations of
	static variables.

	* gcc.c-torture/execute/scope-2.c: Move to ...
	* gcc.dg/noncompile/scope.c: .... here.

From-SVN: r65615
This commit is contained in:
Mark Mitchell 2003-04-15 01:37:03 +00:00 committed by Mark Mitchell
parent e623703138
commit f4e929877c
4 changed files with 27 additions and 2 deletions
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5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2003-04-14 Mark Mitchell <mark@codesourcery.com>
* c-decl.c (grokdeclarator): Reject extern redeclarations of
static variables.
2003-04-14 Janis Johnson <janis287@us.ibm.com>
* config/rs6000/rs6000.md (define_constants): Define constants for

15
gcc/c-decl.c
View File

@ -4376,6 +4376,21 @@ grokdeclarator (declarator, declspecs, decl_context, initialized)
else if (type_quals)
type = c_build_qualified_type (type, type_quals);
/* It is invalid to create an `extern' declaration for a
variable if there is a global declaration that is
`static'. */
if (extern_ref && current_binding_level != global_binding_level)
{
tree global_decl;
global_decl = identifier_global_value (declarator);
if (global_decl
&& TREE_CODE (global_decl) == VAR_DECL
&& !TREE_PUBLIC (global_decl))
error ("variable previously declared `static' redeclared "
"`extern'");
}
decl = build_decl (VAR_DECL, declarator, type);
if (size_varies)
C_DECL_VARIABLE_SIZE (decl) = 1;

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2003-04-14 Mark Mitchell <mark@codesourcery.com>
* gcc.c-torture/execute/scope-2.c: Move to ...
* gcc.dg/noncompile/scope.c: .... here.
2003-04-14 Roger Sayle <roger@eyesopen.com>
* gcc.dg/20030414-2.c: New test case.

2
gcc/testsuite/gcc.c-torture/execute/scope-2.c → gcc/testsuite/gcc.dg/noncompile/scope.c
View File

@ -4,7 +4,7 @@ f ()
{
int v = 4;
{
extern int v;
extern int v; /* { dg-error "static" } */
if (v != 3)
abort ();
}