+########
+# NAME multiple conflict markers
+<<<<<<< yours:sample.txt
+my $some_code;
+=======
+my $some_other_code;
+>>>>>>> theirs:sample.txt
+EXPECT
+Version control conflict marker at - line 1, near "<<<<<<<"
+Version control conflict marker at - line 3, near "======="
+Version control conflict marker at - line 5, near ">>>>>>>"
+Execution of - aborted due to compilation errors.
+########
+# NAME (Might be a runaway multi-line...) with Latin-1 delimiters in utf8
+BEGIN { binmode STDERR, ':utf8' }
+use utf8;
+q«
+« time
+EXPECT
+syntax error at - line 4, near "« time"
+ (Might be a runaway multi-line «« string starting on line 3)
+Execution of - aborted due to compilation errors.
+########
+# NAME (Might be a runaway multi-line...) with non-Latin-1 delimiters
+BEGIN { binmode STDERR, ':utf8' }
+use utf8;
+q ϡ
+ϡ time
+EXPECT
+syntax error at - line 4, near "ϡ time"
+ (Might be a runaway multi-line ϡϡ string starting on line 3)
+Execution of - aborted due to compilation errors.
+########
+# NAME tr/// handling of mis-formatted \o characters
+# may only fail with ASAN
+tr/\o-0//;
+EXPECT
+Missing braces on \o{} at - line 2, within string
+Execution of - aborted due to compilation errors.