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📄 redef1.c

📁 this is a gcc file, you can download it and learn its usetility, for further detail please look at t
💻 C
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/* Test for redefining traditional macros with insignificant   (i.e. whitespace) differences.  *//* { dg-do preprocess } */#define foo bar#define /* x */ foo /* x */ bar /* x */#define quux(thud) a one and a thud and a two#define /**/ quux( thud ) /**/ a one and a /**/ thud /**/ and /**/ a two#define quux(thud) a one	and a thud and a 	two /* bah */#define f(x, y)x "x  y z"  y#define f(x, y) x  "x  y z" y#define baz() whiz bang#define baz() whiz  bang#define g foo#undef g#define g/* { dg-bogus "redefined" "foo redefined"	{ target *-*-* } 8 } *//* { dg-bogus "redefined" "quux redefined"	{ target *-*-* } 11 } *//* { dg-bogus "redefined" "quux redefined"	{ target *-*-* } 12 } *//* { dg-bogus "redefined" "f redefined"		{ target *-*-* } 15 } *//* { dg-bogus "redefined" "baz redefined"	{ target *-*-* } 18 } *//* { dg-bogus "redefined" "g redefined"		{ target *-*-* } 22 } *//* { dg-bogus "previous def" "foo prev def"	{ target *-*-* } 7 } *//* { dg-bogus "previous def" "quux prev def"	{ target *-*-* } 10 } *//* { dg-bogus "previous def" "quux prev def"	{ target *-*-* } 11 } *//* { dg-bogus "previous def" "f prev def"	{ target *-*-* } 14 } *//* { dg-bogus "previous def" "baz prev def"	{ target *-*-* } 17 } *//* { dg-bogus "previous def" "g prev def"	{ target *-*-* } 20 } */

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