clang/test/Sema/Inputs/unused-expr-system-header.h

   1 // "System header" for testing that -Wunused-value is properly suppressed in
   2 // certain cases.
   3
   4 #define POSSIBLY_BAD_MACRO(x) \
   5   { int i = x; \
   6     i; }
   7
   8 #define STATEMENT_EXPR_MACRO(x) \
   9   (__extension__ \
  10    ({int i = x; \
  11      i;}))
  12
  13 #define COMMA_MACRO_1(x, y) \
  14   {x, y;}
  15
  16 #define COMMA_MACRO_2(x, y) \
  17   if (x) { 1 == 2, y; }
  18
  19 #define COMMA_MACRO_3(x, y) \
  20   (x, y)
  21
  22 #define COMMA_MACRO_4(x, y) \
  23   ( 1 == 2, y )