clang/test/Preprocessor/warn-disabled-macro-expansion.c

   1 // RUN: %clang_cc1 %s -E -Wdisabled-macro-expansion -verify
   2
   3 #define p p
   4
   5 #define a b
   6 #define b a
   7
   8 #define f(a) a
   9
  10 #define g(b) a
  11
  12 #define h(x) i(x)
  13 #define i(y) i(y)
  14
  15 #define c(x) x(0)
  16
  17 #define y(x) y
  18 #define z(x) (z)(x)
  19
  20 p // no warning
  21
  22 a // expected-warning {{recursive macro}}
  23
  24 f(2)
  25
  26 g(3) // expected-warning {{recursive macro}}
  27
  28 h(0) // expected-warning {{recursive macro}}
  29
  30 c(c) // expected-warning {{recursive macro}}
  31
  32 y(5) // expected-warning {{recursive macro}}
  33
  34 z(z) // ok
  35