http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57653
Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-06-23
Ever confirmed|0 |1
--- Comment #9 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Allan McRae from comment #8)
> I really have no idea what I am looking for... but adding a breakpoint at
> linemap_add I see (reason, file):
>
> LC_ENTER "foo.c"
> LC_RENAME "<command-line>"
> LC_ENTER "/usr/include/stdc-predef.h"
> LC_LEAVE 0x0
> LC_RENAME "foo.c"
> <- correct output printed here
> LC_LEAVE 0x0
>
> LC_ENTER "foo.c"
> LC_RENAME "<command-line>"
> LC_ENTER "foo.h"
> LC_LEAVE 0x0
> LC_ENTER "/usr/include/stdc-predef.h"
> LC_RENAME "foo.c"
> LC_LEAVE 0x0
> <- incorrect output printed here
> LC_LEAVE 0x0
>
> So it looks like it is not leaving "/usr/include/stdc-predef.h" at the right
> time so the wrong thing is being renamed?
It seems a probable cause for this bug. Can you track where the return paths
differ?
Does
LC_ENTER "/usr/include/stdc-predef.h"
happen through the same functions in both cases?
and the LC_LEAVE 0x0 just afterwards?
Perhaps there is a missing LC_LEAVE or perhaps the order between
LC_RENAME "foo.c"
LC_LEAVE 0x0
should be reversed.
Strangely, I still cannot reproduce this:
manuel@gcc10:~$ ~/test1/200330/install/bin/gcc -imacros foo.h foo.c
foo.c: In function ‘main’:
foo.c:1:21: error: expected expression before ‘}’ token
int main() { return }
^
manuel@gcc10:~$ ~/test1/200330/install/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/home/manuel/test1/200330/install/bin/gcc
COLLECT_LTO_WRAPPER=/home/manuel/test1/200330/install/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /home/manuel/test1/src/configure
--prefix=/home/manuel/test1/./200330/install
--enable-languages=c,c++,objc,fortran,ada,obj-c++
Thread model: posix
gcc version 4.9.0 20130622 (experimental) [trunk revision 195333] (GCC)
Are you sure you don't have some local arch-linux patches? Have you tried
directly downloading the svn version?
