[PATCH] [PR libcpp/71681] Fix handling header.gcc in subdirectories

Andris Pavenis andris.pavenis@iki.fi
Thu Oct 6 17:38:00 GMT 2016

On 09/08/2016 12:09 PM, Thomas Schwinge wrote:
> Hi!
> A few review comments:
> On Wed, 7 Sep 2016 20:19:20 +0300, Andris Pavenis <andris.pavenis@iki.fi> wrote:
>> This patch fixes handling header.gcc in subdirectories when command line option -remap has been
>> used.
> (I have not yet looked up what that mechanism actually does.)  ;-)
>> Current version finds header.gcc in directories from GCC include directory search path but
>> fails to find them in subdirectories due to missing directory separator.
> Can you provide some test cases? (Ah, I now see you got some "Test
> script to reproduce problem" attached to <https://gcc.gnu.org/PR71681> --
> this should be turned into a regression test for the GCC testsuite.)
Separate patch with test-cases is in the attachment.

I added also test for header.gcc directly in directory on GCC includes search path. This case have 
always worked but there is no test-case for it in gcc test-suite yet.
Other test case (pr71681-2.c) fails without initial patch for libcpp/files.c 
(https://gcc.gnu.org/ml/gcc-patches/2016-09/msg00395.html) applied but passes after it is applied.

I would prefer to applied this new patch at first and initial patch after that if they are acceptable.


ChangeLog entry for new patch:

2016-10-06  Andris Pavenis  <andris.pavenis@iki.fi> Add test-cases for pr71681

* gcc.dg/cpp/pr71681-1.c: New testcase (-remap, header.gcc in directory on includes search path)
* gcc.dg/cpp/pr71681-2.c: New testcase (-remap, header.gcc in subdirectory)
* gcc.dg/cpp/remap/header.gcc: File for added test-cases
* gcc.dg/cpp/remap/a/header.gcc: Likewise
* gcc.dg/cpp/remap/a/t_1.h: Likewise
* gcc.dg/cpp/remap/a/t_2.h: Likewise

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