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23 lines
595 B
C
23 lines
595 B
C
// RUN: %clang_cc1 %s -triple x86_64-unknown-linux -fsyntax-only -verify=c
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// RUN: %clang_cc1 -x c++ %s -triple x86_64-unknown-linux -fsyntax-only -verify=cxx
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// cxx-no-diagnostics
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/// Zero-sized structs should not crash.
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int b() {
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struct { } a[10];
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__builtin_memcpy(&a[2], a, 2); // c-warning {{buffer has size 0, but size argument is 2}}
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return 0;
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}
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#ifdef __cplusplus
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// FIXME: This is UB and GCC correctly diagnoses it. Clang should do the same.
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constexpr int b2() {
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struct { } a[10];
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__builtin_memcpy(&a[2], a, 2);
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return 0;
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}
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static_assert(b2() == 0, "");
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#endif
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