GCC modified for the FreeChainXenon project
e7dd72aefe
The following patch changes -Walloc-size warning to no longer warn about int *p = calloc (1, sizeof (int));, because as discussed earlier, the size is IMNSHO sufficient in that case, for alloc_size with 2 arguments warns if the product of the 2 arguments is insufficiently small. Also, it warns also for explicit casts of malloc/calloc etc. calls rather than just implicit, so not just int *p = malloc (1); but also int *p = (int *) malloc (1); It also fixes some ICEs where the code didn't verify the alloc_size arguments properly (Walloc-size-5.c testcase ICEs with vanilla trunk). And lastly, it introduces a coding style warning, -Wcalloc-transposed-args to warn for calloc (sizeof (struct S), 1) and similar calls (regardless of what they are cast to, warning whenever first argument is sizeof and the second is not). 2023-12-20 Jakub Jelinek <jakub@redhat.com> gcc/ * doc/invoke.texi (-Walloc-size): Add to the list of warning options, remove unnecessary line-break. (-Wcalloc-transposed-args): Document new warning. gcc/c-family/ * c.opt (Wcalloc-transposed-args): New warning. * c-common.h (warn_for_calloc, warn_for_alloc_size): Declare. * c-warn.cc (warn_for_calloc, warn_for_alloc_size): New functions. gcc/c/ * c-parser.cc (c_parser_postfix_expression_after_primary): Grow sizeof_arg and sizeof_arg_loc arrays to 6 elements. Call warn_for_calloc if warn_calloc_transposed_args for functions with alloc_size type attribute with 2 arguments. (c_parser_expr_list): Use 6 instead of 3. * c-typeck.cc (build_c_cast): Call warn_for_alloc_size for casts of calls to functions with alloc_size type attribute. (convert_for_assignment): Likewise. gcc/testsuite/ * gcc.dg/Walloc-size-4.c: New test. * gcc.dg/Walloc-size-5.c: New test. * gcc.dg/Wcalloc-transposed-args-1.c: New test. |
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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 | ||
| libgrust | ||
| 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.