dc5027f474
* c-decl.c (diagnose_mismatched_decls): Give error for duplicate typedefs with different but compatible types. Allow duplicate typedefs with the same type except for pedantic non-C1X, but give warning for variably modified types. * c-typeck.c (tagged_types_tu_compatible_p, function_types_compatible_p, type_lists_compatible_p, comptypes_internal): Add parameter different_types_p; set *different_types_p for different but compatible types. All callers changed. (comptypes_check_different_types): New. * c-tree.h (comptypes_check_different_types): Declare. testsuite: * gcc.dg/c1x-typedef-1.c, gcc.dg/c1x-typedef-2.c, gcc.dg/c90-typedef-1.c, gcc.dg/c99-typedef-1.c: New tests. * gcc.dg/decl-8.c: Use -std=gnu89 -pedantic-errors. From-SVN: r159767
11 lines
491 B
C
11 lines
491 B
C
/* Test diagnostics for duplicate typedefs. Basic diagnostics. */
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/* Origin: Joseph Myers <joseph@codesourcery.com> */
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/* { dg-do compile } */
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/* { dg-options "-std=gnu89 -pedantic-errors" } */
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typedef int I; /* { dg-message "note: previous declaration of 'I' was here" } */
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typedef int I; /* { dg-error "redefinition of typedef 'I'" } */
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typedef int I1; /* { dg-message "note: previous declaration of 'I1' was here" } */
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typedef long I1; /* { dg-error "conflicting types for 'I1'" } */
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