Re: unmodified binutils fails on alpha

[christos%astron.com@localhost (Christos Zoulas)]

In article <20190401071032.GB1299%SDF.ORG@localhost>,  <coypu%sdf.org@localhost> wrote:
>hi folks,
>
>while trying to build GCC trunk on 8.0, I had some binutils related bug.
>Trying to update binutils to the latest is failing for a variety of
>reasons.
>
>The release of 2.31.1 at least fails in a way that can be inspected for
>more info: the binary crashes.
>
>this is a build of int main() { return 0; }.
>
>http://coypu.sdf.org/crash-alpha # with unmodified binutils 2.31.1
>http://coypu.sdf.org/ok-alpha # with binutils from 8.0, works fine
>
>It will segfault right away:
>
>$ gdb ./crash -q -ex r -ex bt
>Reading symbols from ./crash...(no debugging symbols found)...done.
>Starting program: /home/maya/crash
>
>Program received signal SIGSEGV, Segmentation fault.
>0x0000000000000000 in ?? ()
>#0  0x0000000000000000 in ?? ()
>#1  0x00000001200009d8 in ___start ()
>#2  0x000000012000087c in _start ()
>Backtrace stopped: frame did not save the PC
>
>Any idea what is wrong with the binary made by binutils 2.31.1?

Compare the two binaries with readelf (perhaps with -r)

christos