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diff --git a/src/3rdparty/angle/src/compiler/preprocessor/symbols.h b/src/3rdparty/angle/src/compiler/preprocessor/symbols.h
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+/****************************************************************************\
+Copyright (c) 2002, NVIDIA Corporation.
+
+NVIDIA Corporation("NVIDIA") supplies this software to you in
+consideration of your agreement to the following terms, and your use,
+installation, modification or redistribution of this NVIDIA software
+constitutes acceptance of these terms.  If you do not agree with these
+terms, please do not use, install, modify or redistribute this NVIDIA
+software.
+
+In consideration of your agreement to abide by the following terms, and
+subject to these terms, NVIDIA grants you a personal, non-exclusive
+license, under NVIDIA's copyrights in this original NVIDIA software (the
+"NVIDIA Software"), to use, reproduce, modify and redistribute the
+NVIDIA Software, with or without modifications, in source and/or binary
+forms; provided that if you redistribute the NVIDIA Software, you must
+retain the copyright notice of NVIDIA, this notice and the following
+text and disclaimers in all such redistributions of the NVIDIA Software.
+Neither the name, trademarks, service marks nor logos of NVIDIA
+Corporation may be used to endorse or promote products derived from the
+NVIDIA Software without specific prior written permission from NVIDIA.
+Except as expressly stated in this notice, no other rights or licenses
+express or implied, are granted by NVIDIA herein, including but not
+limited to any patent rights that may be infringed by your derivative
+works or by other works in which the NVIDIA Software may be
+incorporated. No hardware is licensed hereunder. 
+
+THE NVIDIA SOFTWARE IS BEING PROVIDED ON AN "AS IS" BASIS, WITHOUT
+WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED,
+INCLUDING WITHOUT LIMITATION, WARRANTIES OR CONDITIONS OF TITLE,
+NON-INFRINGEMENT, MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
+ITS USE AND OPERATION EITHER ALONE OR IN COMBINATION WITH OTHER
+PRODUCTS.
+
+IN NO EVENT SHALL NVIDIA BE LIABLE FOR ANY SPECIAL, INDIRECT,
+INCIDENTAL, EXEMPLARY, CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+TO, LOST PROFITS; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) OR ARISING IN ANY WAY
+OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE
+NVIDIA SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT,
+TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF
+NVIDIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+\****************************************************************************/
+//
+// symbols.h
+//
+
+#if !defined(__SYMBOLS_H)
+#define __SYMBOLS_H 1
+
+#include "compiler/preprocessor/memory.h"
+
+typedef enum symbolkind {
+   MACRO_S
+} symbolkind;
+
+// Typedefs for things defined here in "symbols.h":
+
+typedef struct Scope_Rec Scope;
+typedef struct Symbol_Rec Symbol;
+
+typedef struct SymbolList_Rec {
+    struct SymbolList_Rec *next;
+    Symbol *symb;
+} SymbolList;
+
+struct Scope_Rec {
+    Scope *next, *prev;     // doubly-linked list of all scopes
+    Scope *parent;
+    Scope *funScope;        // Points to base scope of enclosing function
+    MemoryPool *pool;       // pool used for allocation in this scope
+    Symbol *symbols;
+    
+	int level;              // 0 = super globals, 1 = globals, etc.
+
+    // Only used at global scope (level 1):
+    SymbolList *programs;   // List of programs for this compilation.
+};
+
+
+// Symbol table is a simple binary tree.
+
+#include "compiler/preprocessor/cpp.h"        // to get MacroSymbol def
+
+struct Symbol_Rec {
+    Symbol *left, *right;
+    Symbol *next;
+    int name;       // Name atom
+    SourceLoc loc;
+    symbolkind kind;
+    union {
+        MacroSymbol mac;
+    } details;
+};
+
+extern Scope *CurrentScope;
+extern Scope *GlobalScope;
+extern Scope *ScopeList;
+
+Scope *NewScopeInPool(MemoryPool *);
+#define NewScope()      NewScopeInPool(CurrentScope->pool)
+void PushScope(Scope *fScope);
+Scope *PopScope(void);
+Symbol *NewSymbol(SourceLoc *loc, Scope *fScope, int name, symbolkind kind);
+Symbol *AddSymbol(SourceLoc *loc, Scope *fScope, int atom, symbolkind kind);
+Symbol *LookUpLocalSymbol(Scope *fScope, int atom);
+Symbol *LookUpSymbol(Scope *fScope, int atom);
+
+
+#endif // !defined(__SYMBOLS_H)
+