mirror of
git://gcc.gnu.org/git/gcc.git
synced 2025-04-08 05:10:29 +08:00
a28edad3da
In this PR, we're ICEing on a use of an 'int... a' template parameter pack as part of the variadic lambda init-capture [...z=a]. The unexpected thing about this variadic init-capture is that it is not type-dependent, and so the call to do_auto_deduction from lambda_capture_field_type actually resolves its type to 'int' instead of exiting early like it does for a type-dependent variadic initializer. This later confuses add_capture which, according to one of its comments, assumes that 'type' is always 'auto' for a variadic init-capture. The simplest fix (and the approach that this patch takes) seems to be to avoid doing auto deduction in lambda_capture_field_type when the initializer uses parameter packs, so that we always return 'auto' even in the non-type-dependent case. gcc/cp/ChangeLog: PR c++/94483 * lambda.c (lambda_capture_field_type): Avoid doing auto deduction if the explicit initializer has parameter packs. gcc/testsuite/ChangeLog: PR c++/94483 * g++.dg/cpp2a/lambda-pack-init5.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.