Query about how to install specific gcc trunk

Query about how to install specific gcc trunk

[upcwanghaibo]

Hi,
I am a student and new starter to learn gcc. I try to recurrent the bug in this website https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90336. 
In this page, It says the bug was found in gcc version 10.0.0 20190503 (experimental) [trunk revision 270847] (GCC). I use git to clone the gcc source code from https://github.com/gcc-mirror/gcc.git, then use git log to check the committed version of gcc, finally used git reset to go back the old version. The problem is i can not find gcc version 10.0.0 20190503 (experimental) [trunk revision 270847] (GCC) in the git log.
My question is:
1. How to find and install the specific version of gcc which is gcc version 10.0.0 20190503 (experimental) [trunk revision 270847] (GCC) ? 
2. In this page https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90336, the bug finder use "gcc-trunk -v" command, but when i compile and install gcc, there is only "gcc --version" command, there is no gcc-trunk command to work. So how can i install gcc-trunk to recurrent the bug in the page?
Wait for your reply.
Thanks.

Re: Query about how to install specific gcc trunk

[Stefan Ring]

On Mon, Nov 30, 2020 at 8:53 PM upcwanghaibo via Gcc-help
<gcc-help@gcc.gnu.org> wrote:
>
> Hi,
> I am a student and new starter to learn gcc. I try to recurrent the bug in this website https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90336.
> In this page, It says the bug was found in gcc version 10.0.0 20190503 (experimental) [trunk revision 270847] (GCC). I use git to clone the gcc source code from https://github.com/gcc-mirror/gcc.git, then use git log to check the committed version of gcc, finally used git reset to go back the old version. The problem is i can not find gcc version 10.0.0 20190503 (experimental) [trunk revision 270847] (GCC) in the git log.
> My question is:
> 1. How to find and install the specific version of gcc which is gcc version 10.0.0 20190503 (experimental) [trunk revision 270847] (GCC) ?

Look for "From-SVN:" in git log.

Re: Query about how to install specific gcc trunk

[Jonathan Wakely]

On Mon, 30 Nov 2020, 19:54 upcwanghaibo via Gcc-help, <gcc-help@gcc.gnu.org>
wrote:

> Hi,
> I am a student and new starter to learn gcc. I try to recurrent the bug in
> this website https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90336.
> In this page, It says the bug was found in gcc version 10.0.0 20190503
> (experimental) [trunk revision 270847] (GCC). I use git to clone the gcc
> source code from https://github.com/gcc-mirror/gcc.git, then use git log
> to check the committed version of gcc, finally used git reset to go back
> the old version. The problem is i can not find gcc version 10.0.0 20190503
> (experimental) [trunk revision 270847] (GCC) in the git log.
> My question is:
> 1. How to find and install the specific version of gcc which is gcc
> version 10.0.0 20190503 (experimental) [trunk revision 270847] (GCC) ?
>

As Stefan already said, the revision 270847 is an ID from the old
Subversion repository. The git log includes the Subversion commit IDs so
just search for that revision in the git log. It will be a commit from May
last year, as the date shows.


2. In this page https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90336, the bug
> finder use "gcc-trunk -v" command, but when i compile and install gcc,
> there is only "gcc --version" command, there is no gcc-trunk command to
> work. So how can i install gcc-trunk to recurrent the bug in the page?
>

There is no gcc-trunk command, that's just what that person has named their
copy. The gcc executable is the one you want.