https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96230
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Alexandre Oliva <aol...@gcc.gnu.org>: https://gcc.gnu.org/g:c1b9cb1a83b0d6485d9922ecef097d250a22d830 commit r11-2312-gc1b9cb1a83b0d6485d9922ecef097d250a22d830 Author: Alexandre Oliva <ol...@adacore.com> Date: Fri Jul 24 15:38:38 2020 -0300 [PR96230] some -dumpbase-ext fixes The initial bug report was that compiling (-c) with -dumpbase "" -dumpbase-ext .<ext> crashes the driver. The verification of -dumpbase-ext against -dumpbase doesn't cover the case in which -dumpbase activates backward-compatibility mode. I added a test for that, and for -dumpbase-ext without -dumpbase, trying to make it work in a sensible way, as if applied to the default -dumpbase for each file. It turned out that this made for too much complexity in dealing with suffixes derived from input filenames, so I gave that up and returned to discarding -dumpbase-ext as documented, ending up with a change identical to that in the original bug report. I also thought I caught an off-by-one error in the initial verification, that caused dumpbase_ext to be discarded if it was identical to the specified dumpbase, but that turned out to be intentional as well, so I put in comments and a test to reflect it. Finally, an earlier version of the newly-added tests used "$var.ext" in an expected output list, which showed me the handling of string expansion was incorrect. Reworked the expr into an eval to make that work, and, absent any reliance on post-eval adjustments to so-expanded output names, I arranged for the adjustments to be skipped after eval. Co-Authored-By: "Zhanghaijian (A)" <z.zhanghaij...@huawei.com> for gcc/ChangeLog PR driver/96230 * gcc.c (process_command): Adjust and document conditions to reset dumpbase_ext. for gcc/testsuite/ChangeLog PR driver/96230 * gcc.misc-tests/outputs.exp: Add tests with -dumpbase-ext, with identical -dumpbase, with -dumpbase "", and without any -dumpbase. (outest): Fix "" expansion in expected outputs, skip adjustments.
