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diff --git a/src/mesa/shader/slang/slang_error.h b/src/mesa/shader/slang/slang_error.h
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+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5.2
+ *
+ * Copyright (C) 2005-2006 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SLANG_ERROR_H
+#define SLANG_ERROR_H
+
+
+extern void
+_slang_reset_error(void);
+
+
+extern void
+_slang_record_error(const char *msg1, const char *msg2,
+ GLint pos, const char *file, int line);
+
+
+extern const char *
+_slang_error_text(void);
+
+
+/**
+ * Record a compilation error, single string message.
+ */
+#define RETURN_ERROR(MSG, POS) \
+do { \
+ _slang_record_error(MSG, "", POS, __FILE__, __LINE__); \
+ return GL_FALSE; \
+} while (0)
+
+
+/**
+ * Record a compilation error, two-string message.
+ */
+#define RETURN_ERROR2(MSG1, MSG2, POS) \
+do { \
+ _slang_record_error(MSG1, MSG2, POS, __FILE__, __LINE__); \
+ return GL_FALSE; \
+} while (0)
+
+
+/**
+ * Record a nil error. Either a real error message or out of memory should
+ * have already been recorded.
+ */
+#define RETURN_NIL() \
+do { \
+ _slang_record_error("unknown", "", -1, __FILE__, __LINE__); \
+ return GL_FALSE; \
+} while (0)
+
+
+/**
+ * Used to report an out of memory condition.
+ */
+#define RETURN_OUT_OF_MEMORY() \
+do { \
+ _slang_record_error("Out of memory", "", -1, __FILE__, __LINE__); \
+ return GL_FALSE; \
+} while (0)
+
+
+
+
+#endif /* SLANG_ERROR_H */