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// { dg-do preprocess }
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// { dg-options "-std=gnu99 -fdiagnostics-show-option -Werror=multichar" }
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/* { dg-message "some warnings being treated as errors" "" {target "*-*-*"} 0 } */
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#if 'abc' // { dg-error "multi-character character constant .-Werror=multichar." }
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#endif
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