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# Copyright © 2017-2018 Intel Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
project('gcc func attributes', ['c', 'cpp'])
# For msvc these will fail because msvc doesn't support __attribute__, for
# Clang and GCC, they should pass.
c = meson.get_compiler('c')
cpp = meson.get_compiler('cpp')
if c.get_id() == 'pgi'
error('MESON_SKIP_TEST: PGI supports its own set of features, will need a separate list for PGI to test it.')
endif
expected = {}
expected_default = not ['msvc', 'clang-cl', 'intel-cl'].contains(c.get_id())
# Q: Why is ifunc not in this list or any of the below lists?
# A: It's too damn hard to figure out if you actually support it, since it
# requires both compiler and libc support, and there isn't a good way to
# figure that out except by running the code we're trying to test.
attributes = [
'aligned',
'always_inline',
'cold',
'const',
'constructor',
'constructor_priority',
'deprecated',
'destructor',
'flatten',
'format',
'format_arg',
'gnu_inline',
'hot',
'malloc',
'noinline',
'nonnull',
'noreturn',
'nothrow',
'pure',
'section',
'sentinel',
'unused',
'used',
'vector_size',
'warn_unused_result',
'weak',
'dllexport',
'dllimport',
]
expected += {
'dllexport': ['windows', 'cygwin'].contains(host_machine.system()),
'dllimport': ['windows', 'cygwin'].contains(host_machine.system()),
}
if c.get_id() == 'gcc' and ['windows', 'cygwin'].contains(host_machine.system())
expected += {
'visibility': false,
'visibility:hidden': false,
'visibility:internal': false,
'visibility:protected': false,
}
endif
if c.get_id() != 'intel'
# not supported by icc as of 19.0.0
attributes += 'weakref'
endif
# These are unsupported on darwin with apple clang 9.1.0
if host_machine.system() != 'darwin'
attributes += 'alias'
attributes += 'visibility'
attributes += 'visibility:default'
attributes += 'visibility:hidden'
attributes += 'visibility:internal'
attributes += 'visibility:protected'
attributes += 'alloc_size'
endif
# gcc doesn't support constructor_priority on darwin
if c.get_id() == 'gcc' and host_machine.system() == 'darwin'
expected += {'constructor_priority': false}
endif
if ['gcc', 'intel'].contains(c.get_id())
# not supported by clang as of 5.0.0 (at least up to 6.0.1)
attributes += 'artificial'
attributes += 'error'
attributes += 'externally_visible'
attributes += 'leaf'
attributes += 'noclone'
attributes += 'optimize'
attributes += 'warning'
if c.get_id() == 'gcc' and c.version().version_compare('>= 7.0.0')
attributes += 'fallthrough'
endif
# XXX(arsen): limited to clang 13+ even though gcc 11 has it, since gcc
# detects support for it at compile time based on binutils version
if c.get_id() == 'clang' and c.version().version_compare('>= 13.0.0')
attributes += 'retain'
endif
endif
if c.get_id() == 'clang'
if c.version().version_compare('>= 18.0.0')
attributes += 'counted_by'
endif
endif
if c.get_id() == 'gcc'
if c.version().version_compare('>= 15.1')
attributes += 'counted_by'
endif
if c.version().version_compare('>= 14.1')
attributes += 'null_terminated_string_arg'
endif
endif
if get_option('mode') == 'single'
foreach a : attributes
x = c.has_function_attribute(a)
expected_result = expected.get(a, expected_default)
assert(x == expected_result, '@0@: @1@'.format(c.get_id(), a))
# counted_by is not currently supported by GCC or clang on C++
if a != 'counted_by'
x = cpp.has_function_attribute(a)
assert(x == expected_result, '@0@: @1@'.format(cpp.get_id(), a))
endif
endforeach
else
multi_expected_c = []
multi_expected_cpp = []
foreach a : attributes
if expected.get(a, expected_default)
multi_expected_c += a
# counted_by is not currently supported by GCC or clang on C++
if a != 'counted_by'
multi_expected_cpp += a
endif
endif
endforeach
multi_check = c.get_supported_function_attributes(attributes)
assert(multi_check == multi_expected_c, 'get_supported_function_arguments works (C)')
multi_check = cpp.get_supported_function_attributes(attributes)
assert(multi_check == multi_expected_cpp, 'get_supported_function_arguments works (C++)')
endif
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