https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120870
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
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Assignee|unassigned at gcc dot gnu.org |hjl.tools at gmail dot
com
--- Comment #43 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Steven Sun from comment #41)
> The following reproduction will also trigger this issue.
>
> runtime segfault when compiled with `-march=znver2 -O0`
>
> ```
> void ext(long a, long b, long c, long d, long e, long f, long g) {}
> __attribute__((preserve_none)) void tail(long a, long b) {}
> __attribute__((preserve_none)) void caller(long a, long b, long c, long d,
> long e, long f, long g) {
> __attribute__((aligned(32))) long x[4]; // for stack alignment
> ext(a, b, c, d, e, f, g);
> __attribute__((musttail)) return tail(a + b, b + c);
> }
> int main() { caller(1, 2, 3, 4, 5, 6, 7); }
> ```
Thanks. It is very helpful.
