ab714e6087
As requested in the PR117178 thread, the following patch allows nonstring attribute also on multi-dimensional arrays (with cv char/signed char/unsigned char as innermost element type) and pointers to such multi-dimensional arrays or pointers to single-dimensional cv char/signed char/unsigned char arrays. Given that (unfortunately) nonstring is a decl attribute rather than type attribute, I think restricting it to single-dimensional arrays makes no sense, even multi-dimensional ones can be used for storage of non-nul terminated strings. I really don't know what the kernel plans are, whether they'll go with -Wno-unterminated-string-initialization added in Makefiles, or whether the plan is to use nonstring attributes to quiet the warning. In the latter case, some of the nonstring attributes will need to be conditional on gcc version, because gcc before this patch will reject it on multidimensional arrays. 2025-03-08 Jakub Jelinek <jakub@redhat.com> PR c/117178 gcc/ * tree.cc (get_attr_nonstring_decl): Look through all ARRAY_REFs, not just one and handle COMPONENT_REF and MEM_REF after skipping those rather than only when there wasn't ARRAY_REF. Formatting fix. gcc/c-family/ * c-attribs.cc (handle_nonstring_attribute): Allow the attribute also on multi-dimensional arrays with char/signed char/unsigned char element type or pointers to such single and multi-dimensional arrays. gcc/testsuite/ * c-c++-common/attr-nonstring-7.c: Remove one xfail. * c-c++-common/attr-nonstring-9.c: New test. * c-c++-common/attr-nonstring-10.c: New test. * c-c++-common/attr-nonstring-11.c: New test. * c-c++-common/attr-nonstring-12.c: New test. * c-c++-common/attr-nonstring-13.c: New test. * c-c++-common/attr-nonstring-14.c: New test. * c-c++-common/attr-nonstring-15.c: New test. * c-c++-common/attr-nonstring-16.c: New test. |
||
|---|---|---|
| .forgejo | ||
| .github | ||
| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
| libcc1 | ||
| libcody | ||
| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgm2 | ||
| libgo | ||
| libgomp | ||
| libgrust | ||
| libiberty | ||
| libitm | ||
| libobjc | ||
| libphobos | ||
| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
| libvtv | ||
| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .b4-config | ||
| .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.