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gxxint.texi: G++ now implements namespaces.

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* gxxint.texi: G++ now implements namespaces.

	* decl.c (pop_label): Don't warn about unused labels more than
	once.
	* semantics.c (finish_goto_stmt): Always marked used labels as
	used.

From-SVN: r29505
This commit is contained in:
Mark Mitchell 1999-09-19 00:33:09 +00:00
parent 57b524174e
commit 88848bdeab
5 changed files with 43 additions and 8 deletions
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9
gcc/cp/ChangeLog
View File

@ -1,5 +1,14 @@
1999-09-18 Paul Burchard <burchard@pobox.com>
* gxxint.texi: G++ now implements namespaces.
1999-09-18 Mark Mitchell <mark@codesourcery.com>
* decl.c (pop_label): Don't warn about unused labels more than
once.
* semantics.c (finish_goto_stmt): Always marked used labels as
used.
* decl.c (layout_var_decl): Change prototype. Call layout_decl
even when the declaration is external.
(cp_finish_decl): Adjust call to layout_var_decl.

15
gcc/cp/decl.c
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@ -1125,14 +1125,17 @@ pop_label (link)
{
tree label = TREE_VALUE (link);
if (DECL_INITIAL (label) == NULL_TREE)
if (!processing_template_decl && doing_semantic_analysis_p ())
{
cp_error_at ("label `%D' used but not defined", label);
/* Avoid crashing later. */
define_label (input_filename, 1, DECL_NAME (label));
if (DECL_INITIAL (label) == NULL_TREE)
{
cp_error_at ("label `%D' used but not defined", label);
/* Avoid crashing later. */
define_label (input_filename, 1, DECL_NAME (label));
}
else if (warn_unused && !TREE_USED (label))
cp_warning_at ("label `%D' defined but not used", label);
}
else if (warn_unused && !TREE_USED (label))
cp_warning_at ("label `%D' defined but not used", label);
SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label), TREE_PURPOSE (link));
}

2
gcc/cp/gxxint.texi
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@ -1602,7 +1602,7 @@ The int parameter is a basic type, and does not receive a B encoding...
@subsection Qualified names
Both C++ and Java allow a class to be lexically nested inside another
class. C++ also supports namespaces (not yet implemented by G++).
class. C++ also supports namespaces.
Java also supports packages.
These are all mangled the same way: First the letter @samp{Q}

6
gcc/cp/semantics.c
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@ -642,6 +642,11 @@ finish_goto_stmt (destination)
if (TREE_CODE (destination) == IDENTIFIER_NODE)
destination = lookup_label (destination);
/* We warn about unused labels with -Wunused. That means we have to
mark the used labels as used. */
if (TREE_CODE (destination) == LABEL_DECL)
TREE_USED (destination) = 1;
if (building_stmt_tree ())
add_tree (build_min_nt (GOTO_STMT, destination));
else
@ -650,7 +655,6 @@ finish_goto_stmt (destination)
if (TREE_CODE (destination) == LABEL_DECL)
{
TREE_USED (destination) = 1;
label_rtx (destination);
expand_goto (destination);
}

19
gcc/testsuite/g++.old-deja/g++.pt/warn2.C Normal file
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@ -0,0 +1,19 @@
// Build don't link:
// Special g++ Options: -Wall
// Origin: Jeroen@MMR.be
template <typename T>
void f()
{
for(;;)
for(;;)
goto a;
a:
;
}
void g()
{
f<long>();
}