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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.2.2/] [gcc/] [testsuite/] [gcc.dg/] [redecl-1.c] - Blame information for rev 645

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Line No. Rev Author Line
1 149 jeremybenn 
/* Test for various situations where a new declaration of an
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   identifier conflicts with an earlier declaration which isn't in the
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   same scope.  These are all undefined behavior per C89 sections
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   6.1.2.2p7, 6.1.2.6p2, and 6.3.2.2p2/footnote 38 (C99 6.2.2p7 and
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   6.2.7p2 - implicit declarations are invalid in C99).  */
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/* { dg-do compile } */
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/* { dg-options "-std=c89 -pedantic -Wall -Wno-unused" } */
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/* Extern at function scope, clashing with extern at file scope */
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extern int foo1;                /* { dg-error "previous" } */
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extern int bar1(int);           /* { dg-error "previous" } */
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void test1(void)
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{
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  extern double foo1;           /* { dg-error "conflict" } */
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  extern double bar1(double);   /* { dg-error "conflict" } */
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}
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/* Extern at file scope, clashing with extern at function scope */
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void test2(void)
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{
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  extern double foo2;           /* { dg-error "previous" } */
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  extern double bar2(double);   /* { dg-error "previous" } */
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}
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extern int foo2;                /* { dg-error "conflict" } */
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extern int bar2(int);           /* { dg-error "conflict" } */
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/* Extern at function scope, clashing with extern at earlier function
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   scope.  Also, don't be fooled by a typedef at file scope.  */
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typedef float baz3;             /* { dg-bogus } */
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void prime3(void)
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{
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  extern int foo3;              /* { dg-error "previous" } */
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  extern int bar3(int);         /* { dg-error "previous" } */
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  extern int baz3;              /* { dg-error "previous" } */
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}
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void test3(void)
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{
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  extern double foo3;           /* { dg-error "conflict" } */
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  extern double bar3(double);   /* { dg-error "conflict" } */
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  extern double baz3;           /* { dg-error "conflict" } */
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}
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/* Extern at function scope, clashing with previous implicit decl.  */
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void prime4(void)
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{
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  bar4();                       /* { dg-error "previous|implicit" } */
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}
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void test4(void)
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{
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  extern double bar4(double);   /* { dg-error "conflict" } */
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}
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/* Implicit decl, clashing with extern at previous function scope.  */
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void prime5(void)
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{
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  extern double bar5(double);   /* { dg-error "previous" "" } */
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}
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void test5(void)
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{
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  bar5(1);                      /* { dg-error "implicit" } */
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}
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/* Extern then static, both at file scope.  */
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extern int test6(int);          /* { dg-warning "previous" "" } */
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static int test6(int x)
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{ return x; }                   /* { dg-warning "follows non-static" } */
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/* Extern then static, extern at previous function scope.  */
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void prime7(void)
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{
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  extern int test7(int);        /* { dg-warning "previous" "" } */
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}
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static int test7(int x)
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{ return x; }                   /* { dg-warning "follows non-static" } */
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/* Implicit decl then static.  */
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void prime8(void)
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{
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  test8();                      /* { dg-warning "previous" "" } */
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                                /* { dg-warning "implicit" "implicit" { target *-*-* } 96 } */
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}
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static int test8(int x)
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{ return x; }                   /* { dg-warning "follows non-static" } */

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