v1.4.4
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lib/linux/include/internal/ftdebug.h
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lib/linux/include/internal/ftdebug.h
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/***************************************************************************/
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/* */
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/* ftdebug.h */
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/* */
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/* Debugging and logging component (specification). */
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/* */
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/* Copyright 1996-2002, 2004, 2006-2009, 2013 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/* */
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/* IMPORTANT: A description of FreeType's debugging support can be */
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/* found in `docs/DEBUG.TXT'. Read it if you need to use or */
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/* understand this code. */
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/* */
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/***************************************************************************/
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#ifndef __FTDEBUG_H__
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#define __FTDEBUG_H__
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#include <ft2build.h>
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#include FT_CONFIG_CONFIG_H
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#include FT_FREETYPE_H
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FT_BEGIN_HEADER
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/* force the definition of FT_DEBUG_LEVEL_ERROR if FT_DEBUG_LEVEL_TRACE */
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/* is already defined; this simplifies the following #ifdefs */
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/* */
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#ifdef FT_DEBUG_LEVEL_TRACE
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#undef FT_DEBUG_LEVEL_ERROR
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#define FT_DEBUG_LEVEL_ERROR
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#endif
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/*************************************************************************/
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/* */
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/* Define the trace enums as well as the trace levels array when they */
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/* are needed. */
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/* */
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/*************************************************************************/
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#ifdef FT_DEBUG_LEVEL_TRACE
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#define FT_TRACE_DEF( x ) trace_ ## x ,
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/* defining the enumeration */
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typedef enum FT_Trace_
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{
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#include FT_INTERNAL_TRACE_H
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trace_count
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} FT_Trace;
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/* defining the array of trace levels, provided by `src/base/ftdebug.c' */
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extern int ft_trace_levels[trace_count];
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#undef FT_TRACE_DEF
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#endif /* FT_DEBUG_LEVEL_TRACE */
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/*************************************************************************/
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/* */
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/* Define the FT_TRACE macro */
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/* */
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/* IMPORTANT! */
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/* */
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/* Each component must define the macro FT_COMPONENT to a valid FT_Trace */
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/* value before using any TRACE macro. */
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/* */
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/*************************************************************************/
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#ifdef FT_DEBUG_LEVEL_TRACE
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#define FT_TRACE( level, varformat ) \
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do \
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{ \
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if ( ft_trace_levels[FT_COMPONENT] >= level ) \
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FT_Message varformat; \
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} while ( 0 )
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#else /* !FT_DEBUG_LEVEL_TRACE */
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#define FT_TRACE( level, varformat ) do { } while ( 0 ) /* nothing */
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#endif /* !FT_DEBUG_LEVEL_TRACE */
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_Trace_Get_Count */
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/* */
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/* <Description> */
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/* Return the number of available trace components. */
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/* */
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/* <Return> */
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/* The number of trace components. 0 if FreeType 2 is not built with */
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/* FT_DEBUG_LEVEL_TRACE definition. */
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/* */
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/* <Note> */
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/* This function may be useful if you want to access elements of */
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/* the internal `ft_trace_levels' array by an index. */
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/* */
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FT_BASE( FT_Int )
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FT_Trace_Get_Count( void );
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_Trace_Get_Name */
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/* */
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/* <Description> */
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/* Return the name of a trace component. */
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/* */
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/* <Input> */
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/* The index of the trace component. */
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/* */
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/* <Return> */
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/* The name of the trace component. This is a statically allocated */
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/* C string, so do not free it after use. NULL if FreeType 2 is not */
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/* built with FT_DEBUG_LEVEL_TRACE definition. */
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/* */
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/* <Note> */
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/* Use @FT_Trace_Get_Count to get the number of available trace */
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/* components. */
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/* */
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/* This function may be useful if you want to control FreeType 2's */
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/* debug level in your application. */
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/* */
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FT_BASE( const char * )
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FT_Trace_Get_Name( FT_Int idx );
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/*************************************************************************/
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/* */
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/* You need two opening and closing parentheses! */
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/* */
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/* Example: FT_TRACE0(( "Value is %i", foo )) */
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/* */
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/* Output of the FT_TRACEX macros is sent to stderr. */
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/* */
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/*************************************************************************/
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#define FT_TRACE0( varformat ) FT_TRACE( 0, varformat )
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#define FT_TRACE1( varformat ) FT_TRACE( 1, varformat )
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#define FT_TRACE2( varformat ) FT_TRACE( 2, varformat )
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#define FT_TRACE3( varformat ) FT_TRACE( 3, varformat )
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#define FT_TRACE4( varformat ) FT_TRACE( 4, varformat )
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#define FT_TRACE5( varformat ) FT_TRACE( 5, varformat )
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#define FT_TRACE6( varformat ) FT_TRACE( 6, varformat )
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#define FT_TRACE7( varformat ) FT_TRACE( 7, varformat )
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/*************************************************************************/
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/* */
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/* Define the FT_ERROR macro. */
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/* */
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/* Output of this macro is sent to stderr. */
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/* */
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/*************************************************************************/
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#ifdef FT_DEBUG_LEVEL_ERROR
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#define FT_ERROR( varformat ) FT_Message varformat
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#else /* !FT_DEBUG_LEVEL_ERROR */
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#define FT_ERROR( varformat ) do { } while ( 0 ) /* nothing */
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#endif /* !FT_DEBUG_LEVEL_ERROR */
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/*************************************************************************/
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/* */
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/* Define the FT_ASSERT and FT_THROW macros. The call to `FT_Throw' */
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/* makes it possible to easily set a breakpoint at this function. */
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/* */
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/*************************************************************************/
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#ifdef FT_DEBUG_LEVEL_ERROR
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#define FT_ASSERT( condition ) \
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do \
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{ \
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if ( !( condition ) ) \
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FT_Panic( "assertion failed on line %d of file %s\n", \
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__LINE__, __FILE__ ); \
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} while ( 0 )
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#define FT_THROW( e ) \
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( FT_Throw( FT_ERR_CAT( FT_ERR_PREFIX, e ), \
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__LINE__, \
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__FILE__ ) | \
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FT_ERR_CAT( FT_ERR_PREFIX, e ) )
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#else /* !FT_DEBUG_LEVEL_ERROR */
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#define FT_ASSERT( condition ) do { } while ( 0 )
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#define FT_THROW( e ) FT_ERR_CAT( FT_ERR_PREFIX, e )
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#endif /* !FT_DEBUG_LEVEL_ERROR */
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/*************************************************************************/
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/* */
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/* Define `FT_Message' and `FT_Panic' when needed. */
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/* */
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/*************************************************************************/
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#ifdef FT_DEBUG_LEVEL_ERROR
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#include "stdio.h" /* for vfprintf() */
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/* print a message */
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FT_BASE( void )
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FT_Message( const char* fmt,
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... );
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/* print a message and exit */
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FT_BASE( void )
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FT_Panic( const char* fmt,
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... );
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/* report file name and line number of an error */
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FT_BASE( int )
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FT_Throw( FT_Error error,
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int line,
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const char* file );
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#endif /* FT_DEBUG_LEVEL_ERROR */
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FT_BASE( void )
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ft_debug_init( void );
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FT_END_HEADER
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#endif /* __FTDEBUG_H__ */
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/* END */
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