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/* Test for redefining traditional macros with significant differences. */
/* { dg-do preprocess } */
#define foo bar /* { dg-message "previous def" "foo prev def" } */
#define foo barr /* { dg-warning "redefined" "foo redefined" } */
#undef foo
#define foo bar /* { dg-message "previous def" "foo prev def 2" } */
#define foo() bar /* { dg-warning "redefined" "foo redefined 2" } */
#undef foo
#define foo() bar /* { dg-message "previous def" "foo prev def" } */
#define foo() barr /* { dg-warning "redefined" "foo redefined" } */
#define quux(thud) a thud b /* { dg-message "previous def" "quux prev def" } */
#define quux(thu) a thud b /* { dg-warning "redefined" "quux redefined" } */
#define bar(x, y) x+y /* { dg-message "previous def" "bar prev def" } */
#define bar(x, y) x+x /* { dg-warning "redefined" "bar redefined" } */
#define bat(x, y) x+y /* { dg-message "previous def" "bat prev def" } */
#define bat(x, y) x+ y /* { dg-warning "redefined" "bat redefined" } */
#define baz(x, y) x+y /* { dg-message "previous def" "baz prev def" } */
#define baz(x, y) x +y /* { dg-warning "redefined" "baz redefined" } */
#define f(x, y) "x y" /* { dg-message "previous def" "f prev def" } */
#define f(x, y) "x y" /* { dg-warning "redefined" "f redefined" } */
#define g(x, y) 'x' /* { dg-message "previous def" "g prev def" } */
#define g(x, y) ' x' /* { dg-warning "redefined" "g redefined" } */
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