[Bug c/103950] New: printf("\xff") incorrectly optimized to putchar(-1)

[admin@tho-otto.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103950

            Bug ID: 103950
           Summary: printf("\xff") incorrectly optimized to putchar(-1)
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: admin@tho-otto.de
  Target Milestone: ---