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gcc
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cd2fd5facb5e1882d3f338ed456ae9536f7c0593
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.
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gcc
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testsuite
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gcc.dg
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cpp
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warn-undef.c
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// { dg-do preprocess }
// { dg-options "-std=gnu99 -fdiagnostics-show-option -Wundef" }
#if x // { dg-warning "\"x\" is not defined, evaluates to 0 .-Wundef." }
#endif
