GCC modified for the FreeChainXenon project
06280a906c
This patch implements clang's __has_feature and __has_extension in GCC. Currently the patch aims to implement all documented features (and some undocumented ones) following the documentation at https://clang.llvm.org/docs/LanguageExtensions.html with the exception of the legacy features for C++ type traits. These are omitted, since as the clang documentation notes, __has_builtin is the correct "modern" way to query for these (which GCC already implements). gcc/c-family/ChangeLog: PR c++/60512 * c-common.cc (struct hf_feature_info): New. (c_common_register_feature): New. (init_has_feature): New. (has_feature_p): New. * c-common.h (c_common_has_feature): New. (c_family_register_lang_features): New. (c_common_register_feature): New. (has_feature_p): New. * c-lex.cc (init_c_lex): Plumb through has_feature callback. (c_common_has_builtin): Generalize and move common part ... (c_common_lex_availability_macro): ... here. (c_common_has_feature): New. * c-ppoutput.cc (init_pp_output): Plumb through has_feature. gcc/c/ChangeLog: PR c++/60512 * c-lang.cc (c_family_register_lang_features): New. * c-objc-common.cc (struct c_feature_info): New. (c_register_features): New. * c-objc-common.h (c_register_features): New. gcc/cp/ChangeLog: PR c++/60512 * cp-lang.cc (c_family_register_lang_features): New. * cp-objcp-common.cc (struct cp_feature_selector): New. (cp_feature_selector::has_feature): New. (struct cp_feature_info): New. (cp_register_features): New. * cp-objcp-common.h (cp_register_features): New. gcc/ChangeLog: PR c++/60512 * doc/cpp.texi: Document __has_{feature,extension}. gcc/objc/ChangeLog: PR c++/60512 * objc-act.cc (struct objc_feature_info): New. (objc_nonfragile_abi_p): New. (objc_common_register_features): New. * objc-act.h (objc_common_register_features): New. * objc-lang.cc (c_family_register_lang_features): New. gcc/objcp/ChangeLog: PR c++/60512 * objcp-lang.cc (c_family_register_lang_features): New. libcpp/ChangeLog: PR c++/60512 * include/cpplib.h (struct cpp_callbacks): Add has_feature. (enum cpp_builtin_type): Add BT_HAS_{FEATURE,EXTENSION}. * init.cc: Add __has_{feature,extension}. * macro.cc (_cpp_builtin_macro_text): Handle BT_HAS_{FEATURE,EXTENSION}. gcc/testsuite/ChangeLog: PR c++/60512 * c-c++-common/has-feature-common.c: New test. * c-c++-common/has-feature-pedantic.c: New test. * g++.dg/ext/has-feature.C: New test. * gcc.dg/asan/has-feature-asan.c: New test. * gcc.dg/has-feature.c: New test. * gcc.dg/ubsan/has-feature-ubsan.c: New test. * obj-c++.dg/has-feature.mm: New test. * objc.dg/has-feature.m: New test. Co-Authored-By: Iain Sandoe <iain@sandoe.co.uk> |
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| .github | ||
| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
| libcc1 | ||
| libcody | ||
| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgm2 | ||
| libgo | ||
| libgomp | ||
| libiberty | ||
| libitm | ||
| libobjc | ||
| libphobos | ||
| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
| libvtv | ||
| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
| .gitattributes | ||
| .gitignore | ||
| ABOUT-NLS | ||
| ar-lib | ||
| ChangeLog | ||
| ChangeLog.jit | ||
| ChangeLog.tree-ssa | ||
| compile | ||
| config-ml.in | ||
| config.guess | ||
| config.rpath | ||
| config.sub | ||
| configure | ||
| configure.ac | ||
| COPYING | ||
| COPYING.LIB | ||
| COPYING.RUNTIME | ||
| COPYING3 | ||
| COPYING3.LIB | ||
| depcomp | ||
| install-sh | ||
| libtool-ldflags | ||
| libtool.m4 | ||
| ltgcc.m4 | ||
| ltmain.sh | ||
| ltoptions.m4 | ||
| ltsugar.m4 | ||
| ltversion.m4 | ||
| lt~obsolete.m4 | ||
| MAINTAINERS | ||
| Makefile.def | ||
| Makefile.in | ||
| Makefile.tpl | ||
| missing | ||
| mkdep | ||
| mkinstalldirs | ||
| move-if-change | ||
| multilib.am | ||
| README | ||
| SECURITY.txt | ||
| symlink-tree | ||
| test-driver | ||
| ylwrap | ||
This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the files whose names start with COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs/ for how to report bugs usefully. Copyright years on GCC source files may be listed using range notation, e.g., 1987-2012, indicating that every year in the range, inclusive, is a copyrightable year that could otherwise be listed individually.