https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125878
Bug ID: 125878
Summary: Some search algorithms form <algorithm> called with
execution policies fail to produce correct result.
Product: gcc
Version: 16.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: gaspar_pm at proton dot me
Target Milestone: ---
Created attachment 64773
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=64773&action=edit
cpp code with bug1 and bug2 functions
In bug1 (a function from the attached cpp file) std::find_end with
std::execution::par returns arr.cend () while without the execution policy it
correctly finds the iterator.
In bug2 two calls of std::find_first_of being different only by the given
execution policy produce different results - the call with par_unseq policy
fails to find the iterator.