cp-demangle.c (d_print_comp): Don't push more than one of the same CV-qualifier on the top of the stack.

* cp-demangle.c (d_print_comp) [RESTRICT, VOLATILE, CONST]: Don't
	push more than one of the same CV-qualifier on the top of the
	stack.
	(d_print_comp) [ARRAY_TYPE]: If the array itself is CV-qualified,
	move the CV-qualifiers to apply to the element type instead.
	(d_print_array_type): When checking the modifiers, keep looking
	past ones which have been printed already.
	* testsuite/demangle-expected: Add three test cases.

From-SVN: r78354

libiberty/ChangeLog

@@ -1,3 +1,14 @@
+2004-02-24  Ian Lance Taylor  <ian@wasabisystems.com>
+
+	* cp-demangle.c (d_print_comp) [RESTRICT, VOLATILE, CONST]: Don't
+	push more than one of the same CV-qualifier on the top of the
+	stack.
+	(d_print_comp) [ARRAY_TYPE]: If the array itself is CV-qualified,
+	move the CV-qualifiers to apply to the element type instead.
+	(d_print_array_type): When checking the modifiers, keep looking
+	past ones which have been printed already.
+	* testsuite/demangle-expected: Add three test cases.
+
 2004-02-23  Ian Lance Taylor  <ian@wasabisystems.com>
 
 	* cp-demangle.c (__cxa_demangle): Adjust last patch to handle

libiberty/cp-demangle.c

@@ -3050,6 +3050,30 @@ d_print_comp (dpi, dc)
     case DEMANGLE_COMPONENT_RESTRICT:
     case DEMANGLE_COMPONENT_VOLATILE:
     case DEMANGLE_COMPONENT_CONST:
+      {
+	struct d_print_mod *pdpm;
+
+	/* When printing arrays, it's possible to have cases where the
+	   same CV-qualifier gets pushed on the stack multiple times.
+	   We only need to print it once.  */
+
+	for (pdpm = dpi->modifiers; pdpm != NULL; pdpm = pdpm->next)
+	  {
+	    if (! pdpm->printed)
+	      {
+		if (pdpm->mod->type != DEMANGLE_COMPONENT_RESTRICT
+		    && pdpm->mod->type != DEMANGLE_COMPONENT_VOLATILE
+		    && pdpm->mod->type != DEMANGLE_COMPONENT_CONST)
+		  break;
+		if (pdpm->mod->type == dc->type)
+		  {
+		    d_print_comp (dpi, d_left (dc));
+		    return;
+		  }
+	      }
+	  }
+      }
+      /* Fall through.  */
     case DEMANGLE_COMPONENT_RESTRICT_THIS:
     case DEMANGLE_COMPONENT_VOLATILE_THIS:
     case DEMANGLE_COMPONENT_CONST_THIS:
@@ -3125,24 +3149,65 @@ d_print_comp (dpi, dc)
 
     case DEMANGLE_COMPONENT_ARRAY_TYPE:
       {
-	struct d_print_mod dpm;
+	struct d_print_mod *hold_modifiers;
+	struct d_print_mod adpm[4];
+	unsigned int i;
+	struct d_print_mod *pdpm;
 
 	/* We must pass this type down as a modifier in order to print
-	   multi-dimensional arrays correctly.  */
+	   multi-dimensional arrays correctly.  If the array itself is
+	   CV-qualified, we act as though the element type were
+	   CV-qualified.  We do this by copying the modifiers down
+	   rather than fiddling pointers, so that we don't wind up
+	   with a d_print_mod higher on the stack pointing into our
+	   stack frame after we return.  */
 
-	dpm.next = dpi->modifiers;
-	dpi->modifiers = &dpm;
-	dpm.mod = dc;
-	dpm.printed = 0;
-	dpm.templates = dpi->templates;
+	hold_modifiers = dpi->modifiers;
+
+	adpm[0].next = hold_modifiers;
+	dpi->modifiers = &adpm[0];
+	adpm[0].mod = dc;
+	adpm[0].printed = 0;
+	adpm[0].templates = dpi->templates;
+
+	i = 1;
+	pdpm = hold_modifiers;
+	while (pdpm != NULL
+	       && (pdpm->mod->type == DEMANGLE_COMPONENT_RESTRICT
+		   || pdpm->mod->type == DEMANGLE_COMPONENT_VOLATILE
+		   || pdpm->mod->type == DEMANGLE_COMPONENT_CONST))
+	  {
+	    if (! pdpm->printed)
+	      {
+		if (i >= sizeof adpm / sizeof adpm[0])
+		  {
+		    d_print_error (dpi);
+		    return;
+		  }
+
+		adpm[i] = *pdpm;
+		adpm[i].next = dpi->modifiers;
+		dpi->modifiers = &adpm[i];
+		pdpm->printed = 1;
+		++i;
+	      }
+
+	    pdpm = pdpm->next;
+	  }
 
 	d_print_comp (dpi, d_right (dc));
 
-	dpi->modifiers = dpm.next;
+	dpi->modifiers = hold_modifiers;
 
-	if (dpm.printed)
+	if (adpm[0].printed)
 	  return;
 
+	while (i > 1)
+	  {
+	    --i;
+	    d_print_mod (dpi, adpm[i].mod);
+	  }
+
 	d_print_array_type (dpi, dc, dpi->modifiers);
 
 	return;
@@ -3643,19 +3708,19 @@ d_print_array_type (dpi, dc, mods)
       need_paren = 0;
       for (p = mods; p != NULL; p = p->next)
 	{
-	  if (p->printed)
-	    break;
-
-	  if (p->mod->type == DEMANGLE_COMPONENT_ARRAY_TYPE)
+	  if (! p->printed)
 	    {
-	      need_space = 0;
-	      break;
-	    }
-	  else
-	    {
-	      need_paren = 1;
-	      need_space = 1;
-	      break;
+	      if (p->mod->type == DEMANGLE_COMPONENT_ARRAY_TYPE)
+		{
+		  need_space = 0;
+		  break;
+		}
+	      else
+		{
+		  need_paren = 1;
+		  need_space = 1;
+		  break;
+		}
 	    }
 	}
 

libiberty/testsuite/demangle-expected

@@ -3681,6 +3681,24 @@ _ZNK5boost6spirit5matchI13rcs_deltatextEcvMNS0_4impl5dummyEFvvEEv
 boost::spirit::match<rcs_deltatext>::operator void (boost::spirit::impl::dummy::*)()() const
 boost::spirit::match<rcs_deltatext>::operator void (boost::spirit::impl::dummy::*)()
 #
+# Multi-dimensional arrays with qualifiers on the inner dimensions.
+--format=gnu-v3 --no-params
+_Z3fooIA6_KiEvA9_KT_rVPrS4_
+void foo<int const [6]>(int const [9][6], int restrict const (* volatile restrict) [9][6])
+foo<int const [6]>
+#
+# From PR libstdc++/12736
+--format=gnu-v3 --no-params
+_Z3fooIA3_iEvRKT_
+void foo<int [3]>(int const (&) [3])
+foo<int [3]>
+#
+# Related to PR libstdc++/12736
+--format=gnu-v3 --no-params
+_Z3fooIPA3_iEvRKT_
+void foo<int (*) [3]>(int (* const&) [3])
+foo<int (*) [3]>
+#
 # Test GNU V3 constructor and destructor identification.
 # 0 means it is not a constructor/destructor.
 # Other integers correspond to enum gnu_v3_{c,d}tor_kinds in demangle.h.