re PR c++/12909 (ambiguity in mangling vector types)

	PR c++/12909
	* mangle.c (write_type) [VECTOR_TYPE]: Change mangling.

From-SVN: r156481

3 files changed, 73 insertions, 5 deletions

diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index fcbef26..d4a43ec 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,3 +1,9 @@
+2010-02-03  Jason Merrill  <jason@redhat.com>
+
+	PR c++/12909
+	* cp-demangle.c (d_number_component, d_vector_type): New.
+	(cplus_demangle_type, d_print_comp, d_print_mod): Handle vectors.
+
 2010-01-25  Ian Lance Taylor  <iant@google.com>
 
 	* cp-demangle.c (cplus_demangle_type): Check for invalid type
diff --git a/libiberty/cp-demangle.c b/libiberty/cp-demangle.c
index 2f4d0cc..75706b3 100644
--- a/libiberty/cp-demangle.c
+++ b/libiberty/cp-demangle.c
@@ -389,6 +389,8 @@ d_class_enum_type (struct d_info *);
 
 static struct demangle_component *d_array_type (struct d_info *);
 
+static struct demangle_component *d_vector_type (struct d_info *);
+
 static struct demangle_component *
 d_pointer_to_member_type (struct d_info *);
 
@@ -796,6 +798,7 @@ d_make_comp (struct d_info *di, enum demangle_component_type type,
     case DEMANGLE_COMPONENT_LITERAL:
     case DEMANGLE_COMPONENT_LITERAL_NEG:
     case DEMANGLE_COMPONENT_COMPOUND_NAME:
+    case DEMANGLE_COMPONENT_VECTOR_TYPE:
       if (left == NULL || right == NULL)
 	return NULL;
       break;
@@ -1442,6 +1445,20 @@ d_number (struct d_info *di)
     }
 }
 
+/* Like d_number, but returns a demangle_component.  */
+
+static struct demangle_component *
+d_number_component (struct d_info *di)
+{
+  struct demangle_component *ret = d_make_empty (di);
+  if (ret)
+    {
+      ret->type = DEMANGLE_COMPONENT_NUMBER;
+      ret->u.s_number.number = d_number (di);
+    }
+  return ret;
+}
+
 /* identifier ::= <(unqualified source code identifier)>  */
 
 static struct demangle_component *
@@ -2200,6 +2217,10 @@ cplus_demangle_type (struct d_info *di)
 	  ret->u.s_fixed.sat = (peek == 's');
 	  break;
 
+	case 'v':
+	  ret = d_vector_type (di);
+	  break;
+
 	default:
 	  return NULL;
 	}
@@ -2418,6 +2439,34 @@ d_array_type (struct d_info *di)
 		      cplus_demangle_type (di));
 }
 
+/* <vector-type> ::= Dv <number> _ <type>
+                 ::= Dv _ <expression> _ <type> */
+
+static struct demangle_component *
+d_vector_type (struct d_info *di)
+{
+  char peek;
+  struct demangle_component *dim;
+
+  peek = d_peek_char (di);
+  if (peek == '_')
+    {
+      d_advance (di, 1);
+      dim = d_expression (di);
+    }
+  else
+    dim = d_number_component (di);
+
+  if (dim == NULL)
+    return NULL;
+
+  if (! d_check_char (di, '_'))
+    return NULL;
+
+  return d_make_comp (di, DEMANGLE_COMPONENT_VECTOR_TYPE, dim,
+		      cplus_demangle_type (di));
+}
+
 /* <pointer-to-member-type> ::= M <(class) type> <(member) type>  */
 
 static struct demangle_component *
@@ -3930,6 +3979,7 @@ d_print_comp (struct d_print_info *dpi,
       }
 
     case DEMANGLE_COMPONENT_PTRMEM_TYPE:
+    case DEMANGLE_COMPONENT_VECTOR_TYPE:
       {
 	struct d_print_mod dpm;
 
@@ -3944,11 +3994,7 @@ d_print_comp (struct d_print_info *dpi,
 	/* If the modifier didn't get printed by the type, print it
 	   now.  */
 	if (! dpm.printed)
-	  {
-	    d_append_char (dpi, ' ');
-	    d_print_comp (dpi, d_left (dc));
-	    d_append_string (dpi, "::*");
-	  }
+	  d_print_mod (dpi, dc);
 
 	dpi->modifiers = dpm.next;
 
@@ -4168,6 +4214,10 @@ d_print_comp (struct d_print_info *dpi,
       }
       return;
 
+    case DEMANGLE_COMPONENT_NUMBER:
+      d_append_num (dpi, dc->u.s_number.number);
+      return;
+
     case DEMANGLE_COMPONENT_JAVA_RESOURCE:
       d_append_string (dpi, "java resource ");
       d_print_comp (dpi, d_left (dc));
@@ -4440,6 +4490,12 @@ d_print_mod (struct d_print_info *dpi,
     case DEMANGLE_COMPONENT_TYPED_NAME:
       d_print_comp (dpi, d_left (mod));
       return;
+    case DEMANGLE_COMPONENT_VECTOR_TYPE:
+      d_append_string (dpi, " vector[");
+      d_print_comp (dpi, d_left (mod));
+      d_append_char (dpi, ']');
+      return;
+
     default:
       /* Otherwise, we have something that won't go back on the
 	 modifier stack, so we can just print it.  */
diff --git a/libiberty/testsuite/demangle-expected b/libiberty/testsuite/demangle-expected
index eaa7ca9..3662f16 100644
--- a/libiberty/testsuite/demangle-expected
+++ b/libiberty/testsuite/demangle-expected
@@ -3926,6 +3926,12 @@ S<int>::x::{lambda()#3}::operator()() const
 --format=gnu-v3
 _Z1fN1SUt_E
 f(S::{unnamed type#1})
+--format=gnu-v3
+_Z1fDv32_f
+f(float vector[32])
+--format=gnu-v3
+_Z1fIfLi4EEvDv_T0__T_
+void f<float, 4>(float vector[4])
 #
 # Ada (GNAT) tests.
 #