[Bug tree-optimization/128177] [17 Regression] valgrind error in prange::set_pt_unknown() (value-range.h:1542)

[dcb314 at hotmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128177

--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
I am trying a bisect. commit 86a40038e2ac840b seems broken.