Merge pull request swiftlang#32063 from JDevlieghere/backtrace-check-utf8

[Utils] Handle unicode characters in backtrace-check

Author: JDevlieghere

test/Runtime/linux-fatal-backtrace.swift

@@ -6,8 +6,6 @@
 // REQUIRES: lldb
 // XFAIL: CPU=s390x
 
-// REQUIRES: rdar63666780
-
 // NOTE: not.py is used above instead of "not --crash" because %target-run
 // doesn't pass through the crash, and `not` may not be available when running
 // on a remote host.

utils/backtrace-check

@@ -72,6 +72,10 @@ def main():
     found_stack_trace_start = False
     found_stack_trace_entry = False
     for line in lines:
+        # In Python 2, string objects can contain Unicode characters.
+        if sys.version_info.major == 2:
+            line = line.decode('utf-8', 'replace')
+
         line = line.rstrip('\n')
 
         # First see if we found the start of our stack trace start. If so, set