c310bf8256
Clang is missing one of the conditions for C99 6.5.9p2, where comparison between pointers must either both point to incomplete types or both point to complete types. This patch adds an extra check to the clause where two pointers are of compatible types. This only applies to C89/C99; the relevant part of the standard was rewritten for C11. Differential Revision: https://reviews.llvm.org/D79945
15 lines
1.2 KiB
C
15 lines
1.2 KiB
C
// RUN: %clang_cc1 -fsyntax-only -verify -std=c99 -Wc11-extensions %s
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// RUN: %clang_cc1 -fsyntax-only -verify -std=c89 -Wc11-extensions %s
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int incomplete[]; // expected-warning {{tentative array definition assumed to have one element}}
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int complete[6];
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int test_comparison_between_incomplete_and_complete_pointer() {
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return (&incomplete < &complete) && // expected-warning {{pointer comparisons before C11 need to be between two complete or two incomplete types; 'int (*)[]' is incomplete and 'int (*)[6]' is complete}}
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(&incomplete <= &complete) && // expected-warning {{pointer comparisons before C11 need to be between two complete or two incomplete types; 'int (*)[]' is incomplete and 'int (*)[6]' is complete}}
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(&incomplete > &complete) && // expected-warning {{pointer comparisons before C11 need to be between two complete or two incomplete types; 'int (*)[]' is incomplete and 'int (*)[6]' is complete}}
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(&incomplete >= &complete) && // expected-warning {{pointer comparisons before C11 need to be between two complete or two incomplete types; 'int (*)[]' is incomplete and 'int (*)[6]' is complete}}
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(&incomplete == &complete) &&
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(&incomplete != &complete);
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}
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