>perl -c -e"use strict; use warnings; sysread(FH, my $buf='', 16384)"
Name "main::FH" used only once: possible typo at -e line 1.
-e syntax OK

>perl -c -e"use strict; use warnings; foo(FH, my $buf='', 16384)"
Bareword "FH" not allowed while "strict subs" in use at -e line 1.
-e had compilation errors.