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/* { dg-do compile } */ #define X(new,old) int i ## new = i ## old + i ## old; #define Y(pfx) X(pfx ## 1, pfx) \ X(pfx ## 2, pfx ## 1) \ X(pfx ## 3, pfx ## 2) \ X(pfx ## 4, pfx ## 3) \ X(pfx ## 5, pfx ## 4) \ X(pfx ## 6, pfx ## 5) \ X(pfx ## 7, pfx ## 6) \ X(pfx ## 8, pfx ## 7) \ X(pfx ## 9, pfx ## 8) void foo (int i1) { Y(1) Y(11) Y(111) asm ("" : : "X" (i1)); }