gcc/builtin-attrs.def

   1 /* Copyright (C) 2001-2023 Free Software Foundation, Inc.
   2    Contributed by Joseph Myers <jsm28@cam.ac.uk>.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 /* This header provides a declarative way of describing the attributes
  21    that are applied to some built-in functions by default.  Attributes
  22    that are meant to be used by user-defined functions but aren't used
  23    by any built-ins, or attributes that apply to types or variables
  24    but not to functions need not and should not be defined here.
  25
  26    Before including this header, you must define the following macros.
  27    In each case where there is an ENUM, it is an identifier used to
  28    reference the tree in subsequent definitions.
  29
  30    DEF_ATTR_NULL_TREE (ENUM)
  31
  32      Constructs a NULL_TREE.
  33
  34    DEF_ATTR_INT (ENUM, VALUE)
  35
  36      Constructs an INTEGER_CST with value VALUE (an integer representable
  37      in HOST_WIDE_INT).
  38
  39    DEF_ATTR_IDENT (ENUM, STRING)
  40
  41      Constructs an IDENTIFIER_NODE for STRING.
  42
  43    DEF_ATTR_TREE_LIST (ENUM, PURPOSE, VALUE, CHAIN)
  44
  45      Constructs a TREE_LIST with given PURPOSE, VALUE and CHAIN (given
  46      as previous ENUM names).  */
  47
  48 DEF_ATTR_NULL_TREE (ATTR_NULL)
  49
  50 /* Construct a tree for a given integer and a list containing it.  */
  51 #define DEF_ATTR_FOR_INT(VALUE)                                 \
  52   DEF_ATTR_INT (ATTR_##VALUE, VALUE)                    \
  53   DEF_ATTR_TREE_LIST (ATTR_LIST_##VALUE, ATTR_NULL,     \
  54                       ATTR_##VALUE, ATTR_NULL)
  55 DEF_ATTR_FOR_INT (0)
  56 DEF_ATTR_FOR_INT (1)
  57 DEF_ATTR_FOR_INT (2)
  58 DEF_ATTR_FOR_INT (3)
  59 DEF_ATTR_FOR_INT (4)
  60 DEF_ATTR_FOR_INT (5)
  61 DEF_ATTR_FOR_INT (6)
  62 #undef DEF_ATTR_FOR_INT
  63
  64 /* Construct a tree for a given string and a list containing it.  */
  65 #define DEF_ATTR_FOR_STRING(ENUM, VALUE)                                        \
  66   DEF_ATTR_STRING (ATTR_##ENUM, VALUE)                  \
  67   DEF_ATTR_TREE_LIST (ATTR_LIST_##ENUM, ATTR_NULL,      \
  68                       ATTR_##ENUM, ATTR_NULL)
  69 DEF_ATTR_FOR_STRING (STR1, "1 ")
  70 DEF_ATTR_FOR_STRING (STRERRNOC, ".C")
  71 DEF_ATTR_FOR_STRING (STRERRNOP, ".P")
  72 #undef DEF_ATTR_FOR_STRING
  73
  74 /* Construct a tree for a list of two integers.  */
  75 #define DEF_LIST_INT_INT(VALUE1, VALUE2)                                 \
  76   DEF_ATTR_TREE_LIST (ATTR_LIST_##VALUE1##_##VALUE2, ATTR_NULL,          \
  77                       ATTR_##VALUE1, ATTR_LIST_##VALUE2)
  78 DEF_LIST_INT_INT (1,0)
  79 DEF_LIST_INT_INT (1,2)
  80 DEF_LIST_INT_INT (1,3)
  81 DEF_LIST_INT_INT (1,4)
  82 DEF_LIST_INT_INT (1,5)
  83 DEF_LIST_INT_INT (2,0)
  84 DEF_LIST_INT_INT (2,3)
  85 DEF_LIST_INT_INT (3,0)
  86 DEF_LIST_INT_INT (3,4)
  87 DEF_LIST_INT_INT (4,0)
  88 DEF_LIST_INT_INT (4,5)
  89 DEF_LIST_INT_INT (5,0)
  90 DEF_LIST_INT_INT (5,6)
  91 #undef DEF_LIST_INT_INT
  92
  93 /* Construct trees for identifiers used in built-in function attributes.
  94    The construction contributes to startup costs so only attributes that
  95    are used to define built-ins should be defined here.  */
  96 DEF_ATTR_IDENT (ATTR_ALLOC_SIZE, "alloc_size")
  97 DEF_ATTR_IDENT (ATTR_COLD, "cold")
  98 DEF_ATTR_IDENT (ATTR_CONST, "const")
  99 DEF_ATTR_IDENT (ATTR_FORMAT, "format")
 100 DEF_ATTR_IDENT (ATTR_FORMAT_ARG, "format_arg")
 101 DEF_ATTR_IDENT (ATTR_MALLOC, "malloc")
 102 DEF_ATTR_IDENT (ATTR_NONNULL, "nonnull")
 103 DEF_ATTR_IDENT (ATTR_NORETURN, "noreturn")
 104 DEF_ATTR_IDENT (ATTR_NOTHROW, "nothrow")
 105 DEF_ATTR_IDENT (ATTR_LEAF, "leaf")
 106 DEF_ATTR_IDENT (ATTR_FNSPEC, "fn spec")
 107 DEF_ATTR_IDENT (ATTR_PRINTF, "printf")
 108 DEF_ATTR_IDENT (ATTR_ASM_FPRINTF, "asm_fprintf")
 109 DEF_ATTR_IDENT (ATTR_GCC_DIAG, "gcc_diag")
 110 DEF_ATTR_IDENT (ATTR_GCC_CDIAG, "gcc_cdiag")
 111 DEF_ATTR_IDENT (ATTR_GCC_CXXDIAG, "gcc_cxxdiag")
 112 DEF_ATTR_IDENT (ATTR_PURE, "pure")
 113 DEF_ATTR_IDENT (ATTR_NOVOPS, "no vops")
 114 DEF_ATTR_IDENT (ATTR_SCANF, "scanf")
 115 DEF_ATTR_IDENT (ATTR_SENTINEL, "sentinel")
 116 DEF_ATTR_IDENT (ATTR_STRFMON, "strfmon")
 117 DEF_ATTR_IDENT (ATTR_STRFTIME, "strftime")
 118 DEF_ATTR_IDENT (ATTR_TYPEGENERIC, "type generic")
 119 DEF_ATTR_IDENT (ATTR_TM_REGPARM, "*tm regparm")
 120 DEF_ATTR_IDENT (ATTR_TM_TMPURE, "transaction_pure")
 121 DEF_ATTR_IDENT (ATTR_RETURNS_TWICE, "returns_twice")
 122 DEF_ATTR_IDENT (ATTR_RETURNS_NONNULL, "returns_nonnull")
 123 DEF_ATTR_IDENT (ATTR_WARN_UNUSED_RESULT, "warn_unused_result")
 124
 125 DEF_ATTR_TREE_LIST (ATTR_NOVOPS_LIST, ATTR_NOVOPS, ATTR_NULL, ATTR_NULL)
 126
 127 DEF_ATTR_TREE_LIST (ATTR_NOVOPS_LEAF_LIST, ATTR_LEAF, ATTR_NULL, ATTR_NOVOPS_LIST)
 128
 129 DEF_ATTR_TREE_LIST (ATTR_LEAF_LIST, ATTR_LEAF, ATTR_NULL, ATTR_NULL)
 130
 131 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_LIST, ATTR_NOTHROW, ATTR_NULL, ATTR_NULL)
 132
 133 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_LEAF_LIST, ATTR_LEAF, ATTR_NULL, ATTR_NOTHROW_LIST)
 134
 135 DEF_ATTR_TREE_LIST (ATTR_NOVOPS_NOTHROW_LEAF_LIST, ATTR_NOVOPS, \
 136                         ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
 137 DEF_ATTR_TREE_LIST (ATTR_CONST_NOTHROW_LIST, ATTR_CONST,        \
 138                         ATTR_NULL, ATTR_NOTHROW_LIST)
 139 DEF_ATTR_TREE_LIST (ATTR_CONST_NOTHROW_LEAF_LIST, ATTR_CONST,   \
 140                         ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
 141 DEF_ATTR_TREE_LIST (ATTR_ERRNOCONST_NOTHROW_LEAF_LIST, ATTR_FNSPEC,\
 142                         ATTR_LIST_STRERRNOC, ATTR_NOTHROW_LEAF_LIST)
 143 DEF_ATTR_TREE_LIST (ATTR_ERRNOPURE_NOTHROW_LEAF_LIST, ATTR_FNSPEC,\
 144                         ATTR_LIST_STRERRNOP, ATTR_NOTHROW_LEAF_LIST)
 145 DEF_ATTR_TREE_LIST (ATTR_PURE_NOTHROW_LIST, ATTR_PURE,          \
 146                         ATTR_NULL, ATTR_NOTHROW_LIST)
 147 DEF_ATTR_TREE_LIST (ATTR_PURE_NOTHROW_LEAF_LIST, ATTR_PURE,     \
 148                         ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
 149 DEF_ATTR_TREE_LIST (ATTR_NORETURN_NOTHROW_LIST, ATTR_NORETURN,  \
 150                         ATTR_NULL, ATTR_NOTHROW_LIST)
 151 DEF_ATTR_TREE_LIST (ATTR_NORETURN_NOTHROW_LEAF_LIST, ATTR_NORETURN,\
 152                         ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
 153 DEF_ATTR_TREE_LIST (ATTR_NORETURN_NOTHROW_LEAF_COLD_LIST, ATTR_COLD,\
 154                         ATTR_NULL, ATTR_NORETURN_NOTHROW_LEAF_LIST)
 155 DEF_ATTR_TREE_LIST (ATTR_RT_NOTHROW_LEAF_LIST, ATTR_RETURNS_TWICE,\
 156                         ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
 157 DEF_ATTR_TREE_LIST (ATTR_COLD_NOTHROW_LEAF_LIST, ATTR_COLD,\
 158                         ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
 159 DEF_ATTR_TREE_LIST (ATTR_COLD_NORETURN_NOTHROW_LEAF_LIST, ATTR_COLD,\
 160                         ATTR_NULL, ATTR_NORETURN_NOTHROW_LEAF_LIST)
 161 DEF_ATTR_TREE_LIST (ATTR_CONST_NORETURN_NOTHROW_LEAF_LIST, ATTR_CONST,\
 162                         ATTR_NULL, ATTR_NORETURN_NOTHROW_LEAF_LIST)
 163 DEF_ATTR_TREE_LIST (ATTR_CONST_NORETURN_NOTHROW_LEAF_COLD_LIST, ATTR_COLD,\
 164                         ATTR_NULL, ATTR_CONST_NORETURN_NOTHROW_LEAF_LIST)
 165 DEF_ATTR_TREE_LIST (ATTR_MALLOC_NOTHROW_LIST, ATTR_MALLOC,      \
 166                         ATTR_NULL, ATTR_NOTHROW_LIST)
 167 DEF_ATTR_TREE_LIST (ATTR_WARN_UNUSED_RESULT_NOTHROW_LEAF_LIST, ATTR_WARN_UNUSED_RESULT, \
 168                         ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
 169 DEF_ATTR_TREE_LIST (ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_LEAF_LIST, ATTR_MALLOC,      \
 170                         ATTR_NULL, ATTR_WARN_UNUSED_RESULT_NOTHROW_LEAF_LIST)
 171 DEF_ATTR_TREE_LIST (ATTR_SENTINEL_NOTHROW_LIST, ATTR_SENTINEL,  \
 172                         ATTR_NULL, ATTR_NOTHROW_LIST)
 173 DEF_ATTR_TREE_LIST (ATTR_SENTINEL_NOTHROW_LEAF_LIST, ATTR_SENTINEL,     \
 174                         ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
 175 DEF_ATTR_TREE_LIST (ATTR_COLD_CONST_NORETURN_NOTHROW_LEAF_LIST, ATTR_CONST,\
 176                         ATTR_NULL, ATTR_COLD_NORETURN_NOTHROW_LEAF_LIST)
 177
 178 /* Allocation functions like malloc and realloc whose first argument
 179    with _SIZE_1, or second argument with _SIZE_2, specifies the size
 180    of the allocated object.  */
 181 DEF_ATTR_TREE_LIST (ATTR_MALLOC_SIZE_1_NOTHROW_LIST, ATTR_ALLOC_SIZE,   \
 182                     ATTR_LIST_1, ATTR_MALLOC_NOTHROW_LIST)
 183 DEF_ATTR_TREE_LIST (ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_LIST, ATTR_WARN_UNUSED_RESULT,       \
 184                     ATTR_NULL, ATTR_MALLOC_NOTHROW_LIST)
 185 DEF_ATTR_TREE_LIST (ATTR_ALLOC_WARN_UNUSED_RESULT_SIZE_2_NOTHROW_LIST, ATTR_ALLOC_SIZE, \
 186                     ATTR_LIST_2, ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_LIST)
 187 DEF_ATTR_TREE_LIST (ATTR_MALLOC_WARN_UNUSED_RESULT_SIZE_1_NOTHROW_LEAF_LIST, ATTR_ALLOC_SIZE, \
 188                     ATTR_LIST_1, ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_LEAF_LIST)
 189 /* Alloca is just like malloc except that it never returns null.  */
 190 DEF_ATTR_TREE_LIST (ATTR_ALLOCA_WARN_UNUSED_RESULT_SIZE_1_NOTHROW_LEAF_LIST, ATTR_RETURNS_NONNULL,
 191                     ATTR_NULL, ATTR_MALLOC_WARN_UNUSED_RESULT_SIZE_1_NOTHROW_LEAF_LIST)
 192
 193 /* Allocation functions like calloc the product of whose first two arguments
 194    specifies the size of the allocated object.  */
 195 DEF_ATTR_TREE_LIST (ATTR_MALLOC_WARN_UNUSED_RESULT_SIZE_1_2_NOTHROW_LEAF_LIST, ATTR_ALLOC_SIZE, \
 196                     ATTR_LIST_1_2, ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_LEAF_LIST)
 197
 198 /* Allocation functions like realloc whose second argument specifies
 199    the size of the allocated object.  */
 200 DEF_ATTR_TREE_LIST (ATTR_ALLOC_WARN_UNUSED_RESULT_SIZE_2_NOTHROW_LEAF_LIST, ATTR_ALLOC_SIZE, \
 201                     ATTR_LIST_2, ATTR_WARN_UNUSED_RESULT_NOTHROW_LEAF_LIST)
 202
 203 /* Functions whose pointer parameter(s) are all nonnull.  */
 204 DEF_ATTR_TREE_LIST (ATTR_NONNULL_LIST, ATTR_NONNULL, ATTR_NULL, ATTR_NULL)
 205 /* Functions whose first parameter is a nonnull pointer.  */
 206 DEF_ATTR_TREE_LIST (ATTR_NONNULL_1, ATTR_NONNULL, ATTR_LIST_1, ATTR_NULL)
 207 /* Functions whose second parameter is a nonnull pointer.  */
 208 DEF_ATTR_TREE_LIST (ATTR_NONNULL_2, ATTR_NONNULL, ATTR_LIST_2, ATTR_NULL)
 209 /* Functions whose third parameter is a nonnull pointer.  */
 210 DEF_ATTR_TREE_LIST (ATTR_NONNULL_3, ATTR_NONNULL, ATTR_LIST_3, ATTR_NULL)
 211 /* Nothrow functions with the sentinel(1) attribute. */
 212 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_SENTINEL_1, ATTR_SENTINEL, ATTR_LIST_1, \
 213                         ATTR_NOTHROW_LIST)
 214 /* Nothrow functions whose pointer parameter(s) are all nonnull.  */
 215 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL, ATTR_NONNULL, ATTR_NULL, \
 216                         ATTR_NOTHROW_LIST)
 217 /* Nothrow leaf functions whose pointer parameter(s) are all nonnull.  */
 218 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_LEAF, ATTR_NONNULL, ATTR_NULL, \
 219                         ATTR_NOTHROW_LEAF_LIST)
 220 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_LEAF_LIST, ATTR_LEAF, ATTR_NULL, ATTR_NOTHROW_NONNULL_LEAF)
 221 /* Nothrow functions whose first parameter is a nonnull pointer.  */
 222 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_1, ATTR_NONNULL, ATTR_LIST_1, \
 223                         ATTR_NOTHROW_LIST)
 224 /* Nothrow functions whose second parameter is a nonnull pointer.  */
 225 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_2, ATTR_NONNULL, ATTR_LIST_2, \
 226                         ATTR_NOTHROW_LIST)
 227 /* Nothrow functions whose third parameter is a nonnull pointer.  */
 228 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_3, ATTR_NONNULL, ATTR_LIST_3, \
 229                         ATTR_NOTHROW_LIST)
 230 /* Nothrow functions whose fourth parameter is a nonnull pointer.  */
 231 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_4, ATTR_NONNULL, ATTR_LIST_4, \
 232                         ATTR_NOTHROW_LIST)
 233 /* Nothrow functions whose fifth parameter is a nonnull pointer.  */
 234 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_5, ATTR_NONNULL, ATTR_LIST_5, \
 235                         ATTR_NOTHROW_LIST)
 236
 237 /* Same as ATTR_NONNULL_1.  */
 238 DEF_ATTR_TREE_LIST (ATTR_NONNULL_1_1, ATTR_NONNULL, ATTR_LIST_1, ATTR_NULL)
 239 /* Functions like {v,}fprintf whose first and second parameters are
 240    nonnull pointers.  As cancellation points the functions are not
 241    nothrow.  */
 242 DEF_ATTR_TREE_LIST (ATTR_NONNULL_1_2, ATTR_NONNULL, ATTR_LIST_1_2, ATTR_NULL)
 243 /* The following don't have {v,}fprintf forms.  They exist only to
 244    make it possible to declare {v,}{f,s}printf attributes using
 245    the same macro.  */
 246 DEF_ATTR_TREE_LIST (ATTR_NONNULL_1_3, ATTR_NONNULL, ATTR_LIST_1_3, ATTR_NULL)
 247 DEF_ATTR_TREE_LIST (ATTR_NONNULL_1_4, ATTR_NONNULL, ATTR_LIST_1_4, ATTR_NULL)
 248 DEF_ATTR_TREE_LIST (ATTR_NONNULL_1_5, ATTR_NONNULL, ATTR_LIST_1_5, ATTR_NULL)
 249
 250 /* Same as ATTR_NOTHROW_NONNULL_1.  */
 251 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_1_1, ATTR_NONNULL, ATTR_LIST_1,
 252                     ATTR_NOTHROW_LIST)
 253 /* Nothrow functions like {v,}sprintf whose first and second parameters
 254    are nonnull pointers.  */
 255 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_1_2, ATTR_NONNULL, ATTR_LIST_1_2, \
 256                     ATTR_NOTHROW_LIST)
 257 /* Nothrow functions like {v,}snprintf whose first and third parameters
 258    are nonnull pointers.  */
 259 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_1_3, ATTR_NONNULL, ATTR_LIST_1_3, \
 260                     ATTR_NOTHROW_LIST)
 261 /* Nothrow functions like {v,}sprintf_chk whose first and fourth parameters
 262    are nonnull pointers.  */
 263 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_1_4, ATTR_NONNULL, ATTR_LIST_1_4, \
 264                     ATTR_NOTHROW_LIST)
 265 /* Nothrow functions like {v,}snprintf_chk whose first and fifth parameters
 266    are nonnull pointers.  */
 267 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_1_5, ATTR_NONNULL, ATTR_LIST_1_5, \
 268                     ATTR_NOTHROW_LIST)
 269
 270 /* Nothrow leaf functions which are type-generic.  */
 271 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_TYPEGENERIC_LEAF, ATTR_TYPEGENERIC, ATTR_NULL, \
 272                         ATTR_NOTHROW_LEAF_LIST)
 273 /* Nothrow nonnull leaf functions that are type-generic.  */
 274 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_TYPEGENERIC_LEAF,
 275                     ATTR_TYPEGENERIC, ATTR_NULL,
 276                     ATTR_NOTHROW_NONNULL_LEAF)
 277 /* Nothrow const functions whose pointer parameter(s) are all nonnull.  */
 278 DEF_ATTR_TREE_LIST (ATTR_CONST_NOTHROW_NONNULL, ATTR_CONST, ATTR_NULL, \
 279                         ATTR_NOTHROW_NONNULL)
 280 /* Nothrow leaf functions whose pointer parameter(s) are all nonnull,
 281    and which return their first argument.  */
 282 DEF_ATTR_TREE_LIST (ATTR_RET1_NOTHROW_NONNULL_LEAF, ATTR_FNSPEC, ATTR_LIST_STR1, \
 283                         ATTR_NOTHROW_NONNULL_LEAF)
 284 /* Nothrow leaf functions whose pointer parameter(s) are all nonnull,
 285    and return value is also nonnull.  */
 286 DEF_ATTR_TREE_LIST (ATTR_RETNONNULL_NOTHROW_LEAF, ATTR_RETURNS_NONNULL, ATTR_NULL, \
 287                         ATTR_NOTHROW_NONNULL_LEAF)
 288 /* Nothrow const leaf functions whose pointer parameter(s) are all nonnull.  */
 289 DEF_ATTR_TREE_LIST (ATTR_CONST_NOTHROW_NONNULL_LEAF, ATTR_CONST, ATTR_NULL, \
 290                         ATTR_NOTHROW_NONNULL_LEAF)
 291 /* Nothrow const functions which are type-generic.  */
 292 DEF_ATTR_TREE_LIST (ATTR_CONST_NOTHROW_TYPEGENERIC, ATTR_TYPEGENERIC, ATTR_NULL, \
 293                         ATTR_CONST_NOTHROW_LIST)
 294 /* Nothrow const leaf functions which are type-generic.  */
 295 DEF_ATTR_TREE_LIST (ATTR_CONST_NOTHROW_TYPEGENERIC_LEAF, ATTR_TYPEGENERIC, ATTR_NULL, \
 296                         ATTR_CONST_NOTHROW_LEAF_LIST)
 297 /* Nothrow pure functions whose pointer parameter(s) are all nonnull.  */
 298 DEF_ATTR_TREE_LIST (ATTR_PURE_NOTHROW_NONNULL, ATTR_PURE, ATTR_NULL, \
 299                         ATTR_NOTHROW_NONNULL)
 300 /* Nothrow pure leaf functions whose pointer parameter(s) are all nonnull.  */
 301 DEF_ATTR_TREE_LIST (ATTR_PURE_NOTHROW_NONNULL_LEAF, ATTR_PURE, ATTR_NULL, \
 302                         ATTR_NOTHROW_NONNULL_LEAF)
 303 /* Nothrow malloc functions whose pointer parameter(s) are all nonnull.  */
 304 DEF_ATTR_TREE_LIST (ATTR_WARN_UNUSED_RESULT_NOTHROW_NONNULL, ATTR_WARN_UNUSED_RESULT, ATTR_NULL, \
 305                         ATTR_NOTHROW_NONNULL)
 306 DEF_ATTR_TREE_LIST (ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_NONNULL, ATTR_MALLOC, ATTR_NULL, \
 307                         ATTR_WARN_UNUSED_RESULT_NOTHROW_NONNULL)
 308 /* Nothrow malloc leaf functions whose pointer parameter(s) are all nonnull.  */
 309 DEF_ATTR_TREE_LIST (ATTR_WARN_UNUSED_RESULT_NOTHROW_NONNULL_LEAF, ATTR_WARN_UNUSED_RESULT, ATTR_NULL, \
 310                         ATTR_NOTHROW_NONNULL_LEAF)
 311 DEF_ATTR_TREE_LIST (ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_NONNULL_LEAF, ATTR_MALLOC, ATTR_NULL, \
 312                         ATTR_WARN_UNUSED_RESULT_NOTHROW_NONNULL_LEAF)
 313
 314 /* Construct a tree for the format attribute (and implicitly nonnull).  */
 315 #define DEF_FORMAT_ATTRIBUTE(TYPE, FA, VALUES)                           \
 316   DEF_ATTR_TREE_LIST (ATTR_##TYPE##_##VALUES, ATTR_NULL,                 \
 317                       ATTR_##TYPE, ATTR_LIST_##VALUES)                   \
 318   DEF_ATTR_TREE_LIST (ATTR_FORMAT_##TYPE##_##VALUES, ATTR_FORMAT,        \
 319                       ATTR_##TYPE##_##VALUES, ATTR_NONNULL_##FA)
 320
 321 /* Construct a tree for the format and nothrow attributes (format
 322    implies nonnull).  */
 323 #define DEF_FORMAT_ATTRIBUTE_NOTHROW(TYPE, FA, VALUES)                   \
 324   DEF_ATTR_TREE_LIST (ATTR_##TYPE##_##VALUES, ATTR_NULL,                 \
 325                       ATTR_##TYPE, ATTR_LIST_##VALUES)                   \
 326   DEF_ATTR_TREE_LIST (ATTR_FORMAT_##TYPE##_NOTHROW_##VALUES, ATTR_FORMAT,\
 327                       ATTR_##TYPE##_##VALUES, ATTR_NOTHROW_NONNULL_##FA)
 328
 329 /* Construct one tree for the format attribute and another for the format
 330    and nothrow attributes (in both cases format implies nonnull).  */
 331 #define DEF_FORMAT_ATTRIBUTE_BOTH(TYPE, FA, VALUES)                      \
 332   DEF_ATTR_TREE_LIST (ATTR_##TYPE##_##VALUES, ATTR_NULL,                 \
 333                       ATTR_##TYPE, ATTR_LIST_##VALUES)                   \
 334   DEF_ATTR_TREE_LIST (ATTR_FORMAT_##TYPE##_##VALUES, ATTR_FORMAT,        \
 335                       ATTR_##TYPE##_##VALUES, ATTR_NONNULL_##FA)         \
 336   DEF_ATTR_TREE_LIST (ATTR_FORMAT_##TYPE##_NOTHROW_##VALUES, ATTR_FORMAT,\
 337                       ATTR_##TYPE##_##VALUES, ATTR_NOTHROW_NONNULL_##FA)
 338
 339 /* Construct a pair of trees for the nonnull attribute for the first
 340    argument, plus format printf attribute (format implies nonnull):
 341    the first ordinary and the second nothrow.  */
 342 #define DEF_FORMAT_ATTRIBUTE_NONNULL(TYPE, FA, VALUES)                   \
 343   DEF_ATTR_TREE_LIST (ATTR_NONNULL_1_FORMAT_##TYPE##_##VALUES,           \
 344                       ATTR_FORMAT, ATTR_##TYPE##_##VALUES,               \
 345                       ATTR_NONNULL_1_##FA)                               \
 346   DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_1_FORMAT_##TYPE##_##VALUES,   \
 347                       ATTR_FORMAT, ATTR_##TYPE##_##VALUES,               \
 348                       ATTR_NOTHROW_NONNULL_1_##FA)
 349
 350 DEF_FORMAT_ATTRIBUTE(PRINTF,1,1_0)
 351 DEF_FORMAT_ATTRIBUTE(PRINTF,1,1_2)
 352 DEF_FORMAT_ATTRIBUTE_BOTH(PRINTF,2,2_0)
 353 DEF_FORMAT_ATTRIBUTE_BOTH(PRINTF,2,2_3)
 354 DEF_FORMAT_ATTRIBUTE_BOTH(PRINTF,3,3_0)
 355 DEF_FORMAT_ATTRIBUTE_BOTH(PRINTF,3,3_4)
 356 DEF_FORMAT_ATTRIBUTE_NOTHROW(PRINTF,4,4_0)
 357 DEF_FORMAT_ATTRIBUTE_NOTHROW(PRINTF,4,4_5)
 358 DEF_FORMAT_ATTRIBUTE_NOTHROW(PRINTF,5,5_0)
 359 DEF_FORMAT_ATTRIBUTE_NOTHROW(PRINTF,5,5_6)
 360
 361 /* Attributes for fprintf(f, f, va).  */
 362 DEF_FORMAT_ATTRIBUTE_NONNULL(PRINTF,1,1_2)
 363 /* Attributes for v{f,s}printf(d, f, va).  vsprintf is nothrow, vfprintf
 364    is not.  */
 365 DEF_FORMAT_ATTRIBUTE_NONNULL(PRINTF,2,2_0)
 366 /* Attributes for {f,s}printf(d, f, ...).  sprintf is nothrow, fprintf
 367    is not.  */
 368 DEF_FORMAT_ATTRIBUTE_NONNULL(PRINTF,2,2_3)
 369 /* Attributes for vprintf_chk.  */
 370 DEF_FORMAT_ATTRIBUTE_NONNULL(PRINTF,3,3_0)
 371 /* Attributes for printf_chk.  */
 372 DEF_FORMAT_ATTRIBUTE_NONNULL(PRINTF,3,3_4)
 373 /* Attributes for v{f,s}printf_chk(d, t, bos, f, va).  vsprintf_chk is
 374    nothrow, vfprintf_chk is not.  */
 375 DEF_FORMAT_ATTRIBUTE_NONNULL(PRINTF,4,4_0)
 376 /* Attributes for {f,s}printf_chk(d, t, bos, f, ...).  sprintf_chk is
 377    nothrow, fprintf_chk is not.  */
 378 DEF_FORMAT_ATTRIBUTE_NONNULL(PRINTF,4,4_5)
 379
 380 DEF_FORMAT_ATTRIBUTE(SCANF,1,1_0)
 381 DEF_FORMAT_ATTRIBUTE(SCANF,1,1_2)
 382 DEF_FORMAT_ATTRIBUTE_BOTH(SCANF,2,2_0)
 383 DEF_FORMAT_ATTRIBUTE_BOTH(SCANF,2,2_3)
 384 DEF_FORMAT_ATTRIBUTE_NOTHROW(STRFTIME,3,3_0)
 385 DEF_FORMAT_ATTRIBUTE_NOTHROW(STRFMON,3,3_4)
 386 #undef DEF_FORMAT_ATTRIBUTE
 387 #undef DEF_FORMAT_ATTRIBUTE_NOTHROW
 388 #undef DEF_FORMAT_ATTRIBUTE_BOTH
 389
 390 /* Transactional memory variants of the above.  */
 391
 392 DEF_ATTR_TREE_LIST (ATTR_TM_NOTHROW_LIST,
 393                     ATTR_TM_REGPARM, ATTR_NULL, ATTR_NOTHROW_LIST)
 394 DEF_ATTR_TREE_LIST (ATTR_TM_TMPURE_NOTHROW_LIST,
 395                     ATTR_TM_TMPURE, ATTR_NULL, ATTR_TM_NOTHROW_LIST)
 396 DEF_ATTR_TREE_LIST (ATTR_TM_PURE_TMPURE_NOTHROW_LIST,
 397                     ATTR_PURE, ATTR_NULL, ATTR_TM_TMPURE_NOTHROW_LIST)
 398 DEF_ATTR_TREE_LIST (ATTR_TM_NORETURN_NOTHROW_LIST,
 399                     ATTR_TM_REGPARM, ATTR_NULL, ATTR_NORETURN_NOTHROW_LIST)
 400 DEF_ATTR_TREE_LIST (ATTR_TM_CONST_NOTHROW_LIST,
 401                     ATTR_TM_REGPARM, ATTR_NULL, ATTR_CONST_NOTHROW_LIST)
 402 DEF_ATTR_TREE_LIST (ATTR_TM_NOTHROW_RT_LIST,
 403                     ATTR_RETURNS_TWICE, ATTR_NULL, ATTR_TM_NOTHROW_LIST)
 404
 405 /* Same attributes used for BUILT_IN_MALLOC except with TM_PURE thrown in.  */
 406 DEF_ATTR_TREE_LIST (ATTR_TMPURE_MALLOC_NOTHROW_LIST,
 407                    ATTR_TM_TMPURE, ATTR_NULL, ATTR_MALLOC_NOTHROW_LIST)
 408 /* Same attributes used for BUILT_IN_FREE except with TM_PURE thrown in.  */
 409 DEF_ATTR_TREE_LIST (ATTR_TMPURE_NOTHROW_LIST,
 410                    ATTR_TM_TMPURE, ATTR_NULL, ATTR_NOTHROW_LIST)
 411
 412 DEF_ATTR_TREE_LIST (ATTR_TMPURE_NOTHROW_LEAF_LIST,
 413                     ATTR_TM_TMPURE, ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
 414 DEF_ATTR_TREE_LIST (ATTR_TMPURE_NORETURN_NOTHROW_LEAF_LIST,
 415                     ATTR_TM_TMPURE, ATTR_NULL, ATTR_NORETURN_NOTHROW_LEAF_LIST)
 416 DEF_ATTR_TREE_LIST (ATTR_TMPURE_NORETURN_NOTHROW_LEAF_COLD_LIST,
 417                     ATTR_COLD, ATTR_NULL,
 418                     ATTR_TMPURE_NORETURN_NOTHROW_LEAF_LIST)
 419
 420 /* Construct a tree for a format_arg attribute.  */
 421 #define DEF_FORMAT_ARG_ATTRIBUTE(FA)                                    \
 422   DEF_ATTR_TREE_LIST (ATTR_FORMAT_ARG_##FA, ATTR_FORMAT_ARG,            \
 423                       ATTR_LIST_##FA, ATTR_NOTHROW_NONNULL_##FA)
 424 DEF_FORMAT_ARG_ATTRIBUTE(1)
 425 DEF_FORMAT_ARG_ATTRIBUTE(2)
 426 #undef DEF_FORMAT_ARG_ATTRIBUTE
 427