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[Bug tree-optimization/83412] GCC line directive suppresses warnings


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83412

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
# 12 "a.c" 3 4

This means you are in a system header so -Wsystem is needed IIRC.

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