[Bug middle-end/91059] New: [10 regression] gcc.c-torture/execute/builtins/snprintf-chk.c fails on aarch64-elf since r272843

[clyon at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91059

            Bug ID: 91059
           Summary: [10 regression]
                    gcc.c-torture/execute/builtins/snprintf-chk.c fails on
                    aarch64-elf since r272843
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: clyon at gcc dot gnu.org
  Target Milestone: ---

Hi,

Since r272843, I've noticed a failure on aarch64-elf:
FAIL: gcc.c-torture/execute/builtins/snprintf-chk.c execution,  -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects

Note that:
- the other compilation flags combinations still work
- aarch64-linux does not have this regression (my aarch64-elf is using newlib)
- there's the same regression on aarch64_be-elf
- aarch64-elf still passes when forcing -mabi=ilp32