From: Martin Vermeer <martin.vermeer@hut.fi>
Date: Wed, 4 Feb 2004 12:24:01 +0000 (+0000)
Subject: Workaround for gcc 2.95 pointer compare bug
X-Git-Tag: 1.6.10~15530
X-Git-Url: https://git.lyx.org/gitweb/?a=commitdiff_plain;h=302a00b035d825ac038970d7bf768ada9d278be9;p=features.git

Workaround for gcc 2.95 pointer compare bug


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8402 a592a061-630c-0410-9148-cb99ea01b6c8
---

diff --git a/src/ChangeLog b/src/ChangeLog
index c00d227cfc..c56c9595e5 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,4 +1,8 @@
 
+2004-02-04  Martin Vermeer  <martin.vermeer@hut.fi>
+
+	* cursor.[Ch]: workaround gcc 2.95 pointer comparison bug
+
 2004-02-04  André Pönitz  <poenitz@gmx.net>
 
 	* BufferView.[Ch] (insertInset):
diff --git a/src/cursor.C b/src/cursor.C
index 244329093a..02c83938ac 100644
--- a/src/cursor.C
+++ b/src/cursor.C
@@ -860,7 +860,7 @@ bool LCursor::openable(MathAtom const & t)
 	// we can't move into anything new during selection
 	if (depth() == anchor_.size())
 		return false;
-	if (t.nucleus() != anchor_[depth()].inset())
+	if (!ptr_cmp(t.nucleus(), anchor_[depth()].inset()))
 		return false;
 
 	return true;
diff --git a/src/cursor.h b/src/cursor.h
index 0951333da9..baff406852 100644
--- a/src/cursor.h
+++ b/src/cursor.h
@@ -33,6 +33,17 @@ class PainterInfo;
 class MathUnknownInset;
 class MathGridInset;
 
+
+// only needed for gcc 2.95, remove when support terminated
+
+
+template <typename A, typename B>
+bool ptr_cmp(A const * a, B const * b)
+{
+return a == b;
+}
+
+
 // this is used for traversing math insets
 typedef std::vector<CursorSlice> CursorBase;
 /// move on one step
diff --git a/src/mathed/ChangeLog b/src/mathed/ChangeLog
index 9192fa70fd..f8619979ab 100644
--- a/src/mathed/ChangeLog
+++ b/src/mathed/ChangeLog
@@ -1,3 +1,8 @@
+2004-02-04  Martin Vermeer  <martin.vermeer@hut.fi>
+
+	* math_nestinset.C: workaround gcc 2.95 pointer comparison bug,
+	reverse below
+
 2004-02-03  Martin Vermeer  <martin.vermeer@hut.fi>
 
 	* math_nestinset.C: use const_cast to get to compile for stlport
diff --git a/src/mathed/math_nestinset.C b/src/mathed/math_nestinset.C
index ac815f1d68..f5096870ad 100644
--- a/src/mathed/math_nestinset.C
+++ b/src/mathed/math_nestinset.C
@@ -72,7 +72,7 @@ MathArray const & MathNestInset::cell(idx_type i) const
 void MathNestInset::getCursorPos(CursorSlice const & cur,
 	int & x, int & y) const
 {
-	BOOST_ASSERT(cur.inset() == const_cast<MathNestInset *>(this));
+	BOOST_ASSERT(ptr_cmp(cur.inset(), this));
 	MathArray const & ar = cur.cell();
 	x = ar.xo() + ar.pos2x(cur.pos());
 	y = ar.yo();
@@ -99,7 +99,7 @@ void MathNestInset::metrics(MetricsInfo const & mi) const
 
 bool MathNestInset::idxNext(LCursor & cur) const
 {
-	BOOST_ASSERT(cur.inset() == const_cast<MathNestInset *>(this));
+	BOOST_ASSERT(ptr_cmp(cur.inset(), this));
 	if (cur.idx() == cur.lastidx())
 		return false;
 	++cur.idx();
@@ -116,7 +116,7 @@ bool MathNestInset::idxRight(LCursor & cur) const
 
 bool MathNestInset::idxPrev(LCursor & cur) const
 {
-	BOOST_ASSERT(cur.inset() == const_cast<MathNestInset *>(this));
+	BOOST_ASSERT(ptr_cmp(cur.inset(), this));
 	if (cur.idx() == 0)
 		return false;
 	--cur.idx();
@@ -133,7 +133,7 @@ bool MathNestInset::idxLeft(LCursor & cur) const
 
 bool MathNestInset::idxFirst(LCursor & cur) const
 {
-	BOOST_ASSERT(cur.inset() == const_cast<MathNestInset *>(this));
+	BOOST_ASSERT(ptr_cmp(cur.inset(), this));
 	if (nargs() == 0)
 		return false;
 	cur.idx() = 0;
@@ -144,7 +144,7 @@ bool MathNestInset::idxFirst(LCursor & cur) const
 
 bool MathNestInset::idxLast(LCursor & cur) const
 {
-	BOOST_ASSERT(cur.inset() == const_cast<MathNestInset *>(this));
+	BOOST_ASSERT(ptr_cmp(cur.inset(), this));
 	if (nargs() == 0)
 		return false;
 	cur.idx() = cur.lastidx();
@@ -155,7 +155,7 @@ bool MathNestInset::idxLast(LCursor & cur) const
 
 bool MathNestInset::idxHome(LCursor & cur) const
 {
-	BOOST_ASSERT(cur.inset() ==  const_cast<MathNestInset *>(this));
+	BOOST_ASSERT(ptr_cmp(cur.inset(), this));
 	if (cur.pos() == 0)
 		return false;
 	cur.pos() = 0;
@@ -165,7 +165,7 @@ bool MathNestInset::idxHome(LCursor & cur) const
 
 bool MathNestInset::idxEnd(LCursor & cur) const
 {
-	BOOST_ASSERT(cur.inset() ==  const_cast<MathNestInset *>(this));
+	BOOST_ASSERT(ptr_cmp(cur.inset(), this));
 	if (cur.lastpos() == cur.lastpos())
 		return false;
 	cur.pos() = cur.lastpos();
@@ -202,7 +202,7 @@ void MathNestInset::drawSelection(PainterInfo & pi, int x, int y) const
 	LCursor & cur = pi.base.bv->cursor();
 	if (!cur.selection())
 		return;
-	if (cur.inset() != const_cast<MathNestInset *>(this))
+	if (!ptr_cmp(cur.inset(), this))
 		return;
 	CursorSlice & s1 = cur.selBegin();
 	CursorSlice & s2 = cur.selEnd();