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Subject: Aliasing violation causes erroneous output in GCC 4.4.4
Origin, upstream, http://code.google.com/p/nvidia-texture-tools/source/detail?r=1167
Bug: http://code.google.com/p/nvidia-texture-tools/issues/detail?id=139
Index: src/src/nvmath/Vector.h
===================================================================
--- src/src/nvmath/Vector.h (revision 8311)
+++ src/src/nvmath/Vector.h (working copy)
@@ -68,7 +68,7 @@
scalar y() const;
scalar z() const;
- const Vector2 & xy() const;
+ Vector2 xy() const;
scalar component(uint idx) const;
@@ -111,8 +111,8 @@
scalar z() const;
scalar w() const;
- const Vector2 & xy() const;
- const Vector3 & xyz() const;
+ Vector2 xy() const;
+ Vector3 xyz() const;
scalar component(uint idx) const;
@@ -231,9 +231,9 @@
inline scalar Vector3::y() const { return m_y; }
inline scalar Vector3::z() const { return m_z; }
-inline const Vector2 & Vector3::xy() const
+inline Vector2 Vector3::xy() const
{
- return *(Vector2 *)this;
+ return Vector2(m_x, m_y);
}
inline scalar Vector3::component(uint idx) const
@@ -332,14 +332,14 @@
inline scalar Vector4::z() const { return m_z; }
inline scalar Vector4::w() const { return m_w; }
-inline const Vector2 & Vector4::xy() const
+inline Vector2 Vector4::xy() const
{
- return *(Vector2 *)this;
+ return Vector2(m_x, m_y);
}
-inline const Vector3 & Vector4::xyz() const
+inline Vector3 Vector4::xyz() const
{
- return *(Vector3 *)this;
+ return Vector3(m_x, m_y, m_z);
}
inline scalar Vector4::component(uint idx) const
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