# nor =signed-integer-overflow worked.
fun:Perl_pp_i_*
+
+# Perl's << is defined as using the underlying C's << operator, with the
+# same undefined behaviour for shifts greater than the word size.
+# (UVs normally, IVs with 'use integer')
+
+fun:Perl_pp_left_shift
+
+# this function numifies the field width in eg printf "%10f".
+# It has its own overflow detection, so don't warn about it
+
+fun:S_expect_number