https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67779
Bug ID: 67779 Summary: Strange ordering with strings in extended object Product: gcc Version: 4.9.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran Assignee: unassigned at gcc dot gnu.org Reporter: arjen.markus895 at gmail dot com Target Milestone: --- Created attachment 36421 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36421&action=edit Source file demonstrating the problem The attached program constructs a small array of integers and strings and then sorts them. The output is: Sorting ... Result: 1 2 3 4 5 6 7 8 9 10 String = 10 String = 1 String = 2 String = 3 String = 4 String = 5 String = 6 String = 7 String = 8 String = 9 What is unexpected is the fact that "String = 10" comes before "String = 1". I have not been able to reduce the code (other than removing the derived type with integers) and still exhibit the odd ordering. The ten integers show that the quicksort routine does its job, though. When comparing the strings in a small program, "String = 10" definitely comes after "String = 1" as I would expect.