1 | /* stdarg.h for GNU. |
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2 | Note that the type used in va_arg is supposed to match the |
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3 | actual type **after default promotions**. |
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4 | Thus, va_arg (..., short) is not valid. */ |
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5 | |
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6 | #ifndef _STDARG_H |
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7 | #ifndef _ANSI_STDARG_H_ |
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8 | #ifndef __need___va_list |
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9 | #define _STDARG_H |
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10 | #define _ANSI_STDARG_H_ |
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11 | #endif /* not __need___va_list */ |
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12 | #undef __need___va_list |
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13 | |
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14 | #ifdef __clipper__ |
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15 | #include <va-clipper.h> |
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16 | #else |
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17 | #ifdef __m88k__ |
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18 | #include <va-m88k.h> |
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19 | #else |
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20 | #ifdef __i860__ |
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21 | #include <va-i860.h> |
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22 | #else |
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23 | #ifdef __hppa__ |
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24 | #include <va-pa.h> |
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25 | #else |
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26 | #ifdef __mips__ |
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27 | #include <va-mips.h> |
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28 | #else |
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29 | #ifdef __sparc__ |
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30 | #include <va-sparc.h> |
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31 | #else |
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32 | #ifdef __i960__ |
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33 | #include <va-i960.h> |
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34 | #else |
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35 | #ifdef __alpha__ |
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36 | #include <va-alpha.h> |
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37 | #else |
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38 | #if defined (__H8300__) || defined (__H8300H__) |
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39 | #include <va-h8300.h> |
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40 | #else |
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41 | #if defined (__PPC__) && defined (_CALL_SYSV) |
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42 | #include <va-ppc.h> |
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43 | #else |
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44 | |
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45 | /* Define __gnuc_va_list. */ |
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46 | |
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47 | #ifndef __GNUC_VA_LIST |
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48 | #define __GNUC_VA_LIST |
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49 | #if defined(__svr4__) || defined(_AIX) || defined(_M_UNIX) || defined(__NetBSD__) |
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50 | typedef char *__gnuc_va_list; |
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51 | #else |
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52 | typedef void *__gnuc_va_list; |
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53 | #endif |
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54 | #endif |
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55 | |
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56 | /* Define the standard macros for the user, |
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57 | if this invocation was from the user program. */ |
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58 | #ifdef _STDARG_H |
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59 | |
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60 | /* Amount of space required in an argument list for an arg of type TYPE. |
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61 | TYPE may alternatively be an expression whose type is used. */ |
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62 | |
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63 | #if defined(sysV68) |
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64 | #define __va_rounded_size(TYPE) \ |
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65 | (((sizeof (TYPE) + sizeof (short) - 1) / sizeof (short)) * sizeof (short)) |
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66 | #else |
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67 | #define __va_rounded_size(TYPE) \ |
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68 | (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int)) |
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69 | #endif |
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70 | |
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71 | #define va_start(AP, LASTARG) \ |
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72 | (AP = ((__gnuc_va_list) __builtin_next_arg (LASTARG))) |
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73 | |
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74 | #undef va_end |
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75 | void va_end (__gnuc_va_list); /* Defined in libgcc.a */ |
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76 | #define va_end(AP) ((void)0) |
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77 | |
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78 | /* We cast to void * and then to TYPE * because this avoids |
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79 | a warning about increasing the alignment requirement. */ |
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80 | |
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81 | #if defined (__arm__) || defined (__i386__) || defined (__i860__) || defined (__ns32000__) || defined (__vax__) |
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82 | /* This is for little-endian machines; small args are padded upward. */ |
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83 | #define va_arg(AP, TYPE) \ |
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84 | (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)), \ |
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85 | *((TYPE *) (void *) ((char *) (AP) - __va_rounded_size (TYPE)))) |
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86 | #else /* big-endian */ |
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87 | /* This is for big-endian machines; small args are padded downward. */ |
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88 | #define va_arg(AP, TYPE) \ |
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89 | (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)), \ |
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90 | *((TYPE *) (void *) ((char *) (AP) \ |
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91 | - ((sizeof (TYPE) < __va_rounded_size (char) \ |
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92 | ? sizeof (TYPE) : __va_rounded_size (TYPE)))))) |
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93 | #endif /* big-endian */ |
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94 | #endif /* _STDARG_H */ |
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95 | |
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96 | #endif /* not powerpc with V.4 calling sequence */ |
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97 | #endif /* not h8300 */ |
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98 | #endif /* not alpha */ |
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99 | #endif /* not i960 */ |
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100 | #endif /* not sparc */ |
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101 | #endif /* not mips */ |
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102 | #endif /* not hppa */ |
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103 | #endif /* not i860 */ |
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104 | #endif /* not m88k */ |
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105 | #endif /* not clipper */ |
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106 | |
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107 | #ifdef _STDARG_H |
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108 | /* Define va_list, if desired, from __gnuc_va_list. */ |
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109 | /* We deliberately do not define va_list when called from |
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110 | stdio.h, because ANSI C says that stdio.h is not supposed to define |
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111 | va_list. stdio.h needs to have access to that data type, |
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112 | but must not use that name. It should use the name __gnuc_va_list, |
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113 | which is safe because it is reserved for the implementation. */ |
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114 | |
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115 | #ifdef _HIDDEN_VA_LIST /* On OSF1, this means varargs.h is "half-loaded". */ |
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116 | #undef _VA_LIST |
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117 | #endif |
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118 | |
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119 | #ifdef _BSD_VA_LIST |
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120 | #undef _BSD_VA_LIST |
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121 | #endif |
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122 | |
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123 | #ifdef __svr4__ |
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124 | /* SVR4.2 uses _VA_LIST for an internal alias for va_list, |
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125 | so we must avoid testing it and setting it here. |
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126 | SVR4 uses _VA_LIST as a flag in stdarg.h, but we should |
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127 | have no conflict with that. */ |
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128 | #ifndef _VA_LIST_ |
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129 | #define _VA_LIST_ |
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130 | #ifdef __i860__ |
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131 | #ifndef _VA_LIST |
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132 | #define _VA_LIST va_list |
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133 | #endif |
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134 | #endif /* __i860__ */ |
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135 | typedef __gnuc_va_list va_list; |
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136 | #endif /* _VA_LIST_ */ |
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137 | #else /* not __svr4__ */ |
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138 | |
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139 | /* The macro _VA_LIST_ is the same thing used by this file in Ultrix. |
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140 | But on BSD NET2 we must not test or define or undef it. |
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141 | (Note that the comments in NET 2's ansi.h |
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142 | are incorrect for _VA_LIST_--see stdio.h!) */ |
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143 | #if !defined (_VA_LIST_) || defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__) || defined(WINNT) |
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144 | /* The macro _VA_LIST_DEFINED is used in Windows NT 3.5 */ |
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145 | #ifndef _VA_LIST_DEFINED |
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146 | /* The macro _VA_LIST is used in SCO Unix 3.2. */ |
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147 | #ifndef _VA_LIST |
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148 | /* The macro _VA_LIST_T_H is used in the Bull dpx2 */ |
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149 | #ifndef _VA_LIST_T_H |
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150 | typedef __gnuc_va_list va_list; |
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151 | #endif /* not _VA_LIST_T_H */ |
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152 | #endif /* not _VA_LIST */ |
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153 | #endif /* not _VA_LIST_DEFINED */ |
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154 | #if !(defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__)) |
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155 | #define _VA_LIST_ |
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156 | #endif |
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157 | #ifndef _VA_LIST |
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158 | #define _VA_LIST |
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159 | #endif |
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160 | #ifndef _VA_LIST_DEFINED |
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161 | #define _VA_LIST_DEFINED |
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162 | #endif |
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163 | #ifndef _VA_LIST_T_H |
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164 | #define _VA_LIST_T_H |
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165 | #endif |
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166 | |
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167 | #endif /* not _VA_LIST_, except on certain systems */ |
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168 | |
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169 | #endif /* not __svr4__ */ |
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170 | |
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171 | #endif /* _STDARG_H */ |
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172 | |
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173 | #endif /* not _ANSI_STDARG_H_ */ |
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174 | #endif /* not _STDARG_H */ |
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