[Bug driver/110408] New: gcc 13 crashes with %rename in specs

[Bug driver/110408] New: gcc 13 crashes with %rename in specs

[brjd_epdjq36 at kygur dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110408

            Bug ID: 110408
           Summary: gcc 13 crashes with %rename in specs
           Product: gcc
           Version: 13.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: driver
          Assignee: unassigned at gcc dot gnu.org
          Reporter: brjd_epdjq36 at kygur dot com
  Target Milestone: ---

According to https://gcc.gnu.org/onlinedocs/gcc/Spec-Files.html 

if I apply this instruction to redefine only a part of the specs file:

%rename lib                 old_lib

*lib:
--start-group -lgcc -lc -leval1 --end-group %(old_lib)


,it is not necessary to change the whole specs file. 


Still, in gcc 13 it crashes and returns this error:

g++-13: fatal error: specs file malformed after 35 characters
compilation terminated.

35 characters is the position after the last character in the old_lib string.

I test it with an older compiler gcc 4 and it is wonderful, no error.
I suppose that this manual is not updated to work in gcc 13 and there are
changes in the syntax.

[Bug driver/110408] gcc 13 crashes with %rename in specs

[brjd_epdjq36 at kygur dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110408

--- Comment #1 from Brjd <brjd_epdjq36 at kygur dot com> ---
Test with specs file



%rename lib                 old_lib

*lib:
--start-group -lgcc -lc --end-group %(old_lib)





and hello.cpp

g++ hello.cpp -specs=/path-to-specs



g++-13: fatal error: specs file malformed after 36 characters
compilation terminated.

g++12 no error
g++-4 no error.

[Bug driver/110408] [13/14 Regression] gcc 13 crashes with %rename in specs

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110408

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|gcc 13 crashes with %rename |[13/14 Regression] gcc 13
                   |in specs                    |crashes with %rename in
                   |                            |specs
   Target Milestone|---                         |13.2
           Keywords|                            |needs-bisection

[Bug driver/110408] [13/14 Regression] gcc 13 crashes with %rename in specs

[brjd_epdjq36 at kygur dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110408

Brjd <brjd_epdjq36 at kygur dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #2 from Brjd <brjd_epdjq36 at kygur dot com> ---
Please ignore it. I test it more and find out that it is my misunderstanding
that I can make it the default specs if I use the %rename option. However, the
compiler is not designed in this way.

Please tell if there are other options. AFAIK currently there are two options
to change the specs behavior. 

First, I can override only a part of the specs file with the %rename option.
The shortage here is that it is not the default and I should invoke it manually
every time by the -specs=/path-to-my-specs-file.

The second way is a rebuild of the GCC or changes in the whole specs file. This
is the way I can set the default without invoking in the command line
-specs=/path-to-my-specs-file.

I do the first one and that causes the error since I use the GCC without
-specs. The compiler simply replaces the whole specs with my custom overriding
specs and fails.