-Mwarnings=FATAL,all 

$ perl -Mwarnings=FATAL,all -le " printf qq/%s %s / , 1, 2; print q/hi
+/;"
1 2 hi

$ perl -Mwarnings=FATAL,all -le " printf qq/%s %s / , 1; print q/hi/;"
Missing argument in printf at -e line 1.

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In reply to Re: How to make all warnings FATAL via PERL5OPT by Anonymous Monk
in thread How to make all warnings FATAL via PERL5OPT by j1n3l0

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