From: Nathan Sidwell <nathan@codesourcery.com>
Date: Thu, 14 Jun 2001 10:48:20 +0000 (+0000)
Subject: class.c (dfs_accumulate_vtbl_inits): For case 2 & 3...
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=87326ba8886677de714e2e764adb248e3f8bfe9f;p=gcc.git

class.c (dfs_accumulate_vtbl_inits): For case 2 & 3...

cp:
	* class.c (dfs_accumulate_vtbl_inits): For case 2 & 3, make sure
	we've not emerged from the hierarchy of RTTI_BINFO on reaching
	a non-virtual base.
testsuite:
	* g++.old-deja/g++.abi/vbase8-9.C: New test.

From-SVN: r43368
---

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index ee62669ae6c..f02f7fa8ced 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,9 @@
+2001-06-14  Nathan Sidwell  <nathan@codesourcery.com>
+
+	* class.c (dfs_accumulate_vtbl_inits): For case 2 & 3, make sure
+	we've not emerged from the hierarchy of RTTI_BINFO on reaching
+	a non-virtual base.
+
 2001-06-13  Mark Mitchell  <mark@codesourcery.com>
 
 	* NEWS: Update release number.
diff --git a/gcc/cp/class.c b/gcc/cp/class.c
index c1347b3cb33..1fbf8d04e68 100644
--- a/gcc/cp/class.c
+++ b/gcc/cp/class.c
@@ -7564,7 +7564,7 @@ accumulate_vtbl_inits (binfo, orig_binfo, rtti_binfo, t, inits)
 				   BINFO_TYPE (orig_binfo)),
 		      20000517);
 
-  /* If it doesn't have a vpte, we don't do anything. */
+  /* If it doesn't have a vptr, we don't do anything. */
   if (!TYPE_CONTAINS_VPTR_P (BINFO_TYPE (binfo)))
     return;
   
@@ -7675,14 +7675,32 @@ dfs_accumulate_vtbl_inits (binfo, orig_binfo, rtti_binfo, t, l)
 	         still be primary to something within a lost primary
 	         virtual base of RTTI_BINFO.  */
 	      tree b;
-	      tree last, orig_last;
+	      tree last = binfo;
+	      tree orig_last = orig_binfo;
 
 	      /* First, look through the bases we are primary to for a
 	     	 virtual base.  */
-	      for (b = BINFO_PRIMARY_BASE_OF (binfo), orig_last = orig_binfo;
+	      for (b = BINFO_PRIMARY_BASE_OF (binfo);
 		   b;
 		   b = BINFO_PRIMARY_BASE_OF (b))
 		{
+		  if (!TREE_VIA_VIRTUAL (b))
+		    {
+		      /* See if B is still within the hierarchy starting
+			 at RTTI_BINFO. */
+		      tree probe;
+
+		      for (probe = b; probe;
+			   probe = BINFO_INHERITANCE_CHAIN (probe))
+			if (probe == rtti_binfo)
+			  break;
+		      if (!probe)
+			{
+			  b = NULL_TREE;
+			  break;
+			}
+		    }
+		  
 		  last = b;
 		  if (orig_last)
 		    orig_last = BINFO_PRIMARY_BASE_OF (orig_last);
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 017ab7dec1e..8a767a52f3a 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2001-06-14  Nathan Sidwell  <nathan@codesourcery.com>
+
+	* g++.old-deja/g++.abi/vbase8-9.C: New test.
+
 2001-06-13  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>
 
 	* lib/objc.exp (objc_target_compile): Add ${rootme} to ld_library_path
diff --git a/gcc/testsuite/g++.old-deja/g++.abi/vbase8-9.C b/gcc/testsuite/g++.old-deja/g++.abi/vbase8-9.C
new file mode 100644
index 00000000000..43bd86a968c
--- /dev/null
+++ b/gcc/testsuite/g++.old-deja/g++.abi/vbase8-9.C
@@ -0,0 +1,76 @@
+// Special g++ Options: -ansi -pedantic-errors -w
+
+// Copyright (C) 2001 Free Software Foundation, Inc.
+// Contributed by Nathan Sidwell 14 Jun 2001 <nathan@codesourcery.com>
+
+// Bug 3145, generated by script provided by stefan@space.twc.de
+// This is case number 9
+
+class C0
+{};
+class C1
+ :  public C0
+{};
+class C2
+ :  public C1
+ ,  public C0
+{};
+class C3
+ :  virtual public C0
+ ,  public C2
+ ,  virtual public C1
+{};
+class C4
+ :  virtual public C2
+ ,  public C0
+ ,  virtual public C3
+ ,  public C1
+{};
+class C5
+ :  public C0
+ ,  public C1
+ ,  public C4
+ ,  virtual public C2
+ ,  public C3
+{};
+class C6
+ :  public C1
+ ,  public C3
+ ,  virtual public C5
+ ,  virtual public C2
+ ,  public C0
+ ,  virtual public C4
+{};
+class C7
+ :  virtual public C1
+ ,  virtual public C0
+ ,  public C6
+ ,  virtual public C2
+ ,  public C5
+{};
+class C8
+ :  virtual public C1
+ ,  virtual public C4
+ ,  public C0
+ ,  virtual public C7
+ ,  virtual public C2
+{};
+class C9
+ :  virtual public C1
+ ,  virtual public C6
+ ,  public C8
+ ,  virtual public C2
+ ,  public C0
+{};
+int main() {
+  C0 c0;
+  C1 c1;
+  C2 c2;
+  C3 c3;
+  C4 c4;
+  C5 c5;
+  C6 c6;
+  C7 c7;
+  C8 c8;
+  C9 c9;
+}