mirror of
git://gcc.gnu.org/git/gcc.git
synced 2025-03-20 13:31:10 +08:00
Unfortunately the extract_autos_r fix in r13-4799-ga7c8036b26082d is derailed by the fact that walk_tree_1 currently walks the elements of a TREE_VEC in reverse, which means for A<auto, auto> in the below testcase extract_autos_r ends up adjusting the TEMPLATE_TYPE_IDX of the first auto instead of the second one, and the first auto is the canonical auto of level 2 (and index 0), so we rightfully trigger the sanity check added in that commit. It seems TREE_VEC and VECTOR_CST are the only trees we walk in reverse, and this has been the case since r21884 whence the original version of walk_tree_1 was introduced. But that's arguably unnatural and not consistent with how we walk all other compound trees such as CONSTRUCTORs and EXPR_P trees in forward order. So this patch makes walk_tree_1 walk TREE_VEC (and VECTOR_CST) in forward order as well, which fixes the testcase. Doing so revealed that keep_template_parm grows the list of found template parameters from the front, which previously compensated for the TREE_VEC behavior, so now we should grow it from the back. PR c++/101886 gcc/cp/ChangeLog: * pt.cc (find_template_parameter_info::parm_list_tail): New data member. (keep_template_parm): Use parm_list_tail to append rather than prepend to parm_list. gcc/ChangeLog: * tree.cc (walk_tree_1) <case TREE_VEC>: Walk the elements in forward instead of reverse order. <case VECTOR_CST>: Likewise. gcc/testsuite/ChangeLog: * g++.dg/concepts/diagnostic12.C: Adjust expected order of template parameters within pretty printed parameter mapping. * g++.dg/concepts/auto6.C: New test.
…
…
…
…
…
…
…
…
…
…
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.
Description
Languages
C++
31.9%
C
31.3%
Ada
12%
D
6.5%
Go
6.4%
Other
11.5%