[Bug time/23789] New: mktime does not set errno on failure

["eggert at cs dot ucla.edu" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=23789

            Bug ID: 23789
           Summary: mktime does not set errno on failure
           Product: glibc
           Version: 2.28
            Status: NEW
          Severity: normal
          Priority: P2
         Component: time
          Assignee: unassigned at sourceware dot org
          Reporter: eggert at cs dot ucla.edu
  Target Milestone: ---

Created attachment 11343
  --> https://sourceware.org/bugzilla/attachment.cgi?id=11343&action=edit
test program that fails on 32-bit glibc

A while ago, POSIX added a requirement to 'mktime' that it must set errno on
failure. Probably this was around 2001. However, glibc mktime never got updated
to set errno and this should be fixed. I'll attach a program to illustrate the
bug. Compile and run it with 'gcc -m32 mktime-test.c'. It should exit with
status 0, but exits with status 2 because mktime does not set errno when it
fails.

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