20 lines
490 B
C
20 lines
490 B
C
/* { dg-do compile } */
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/* { dg-options "-std=c89 -pedantic" } */
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#define f(a,b) f2(a,,b)
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#define f2(a,b,c) a; b; c;
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#define f3(a) a
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#define g() p()
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void p(void) {}
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void foo(void)
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{
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f(p(),p()); /* { dg-warning "macro f2 argument 2: empty macro arguments are undefined" } */
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f2(p(),,p()); /* { dg-warning "macro f2 argument 2: empty macro arguments are undefined" } */
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f3(); /* { dg-warning "macro f3 argument 1: empty macro arguments are undefined" } */
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g();
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}
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