07a8ebed56
…s to its own flag Namely -Wnontrivial-memcall, implied by -Wnontrivial-memaccess This is a followup to #111434
86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -Wnontrivial-memcall %s
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extern "C" void *bzero(void *, unsigned);
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extern "C" void *memset(void *, int, unsigned);
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extern "C" void *memmove(void *s1, const void *s2, unsigned n);
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extern "C" void *memcpy(void *s1, const void *s2, unsigned n);
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class TriviallyCopyable {};
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class NonTriviallyCopyable { NonTriviallyCopyable(const NonTriviallyCopyable&);};
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struct Incomplete;
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void test_bzero(TriviallyCopyable* tc,
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NonTriviallyCopyable *ntc,
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Incomplete* i) {
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// OK
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bzero(tc, sizeof(*tc));
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// OK
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bzero(i, 10);
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// expected-warning@+2{{first argument in call to 'bzero' is a pointer to non-trivially copyable type 'NonTriviallyCopyable'}}
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// expected-note@+1{{explicitly cast the pointer to silence this warning}}
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bzero(ntc, sizeof(*ntc));
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// OK
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bzero((void*)ntc, sizeof(*ntc));
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}
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void test_memset(TriviallyCopyable* tc,
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NonTriviallyCopyable *ntc,
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Incomplete* i) {
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// OK
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memset(tc, 0, sizeof(*tc));
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// OK
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memset(i, 0, 10);
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// expected-warning@+2{{first argument in call to 'memset' is a pointer to non-trivially copyable type 'NonTriviallyCopyable'}}
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// expected-note@+1{{explicitly cast the pointer to silence this warning}}
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memset(ntc, 0, sizeof(*ntc));
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// OK
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memset((void*)ntc, 0, sizeof(*ntc));
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}
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void test_memcpy(TriviallyCopyable* tc0, TriviallyCopyable* tc1,
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NonTriviallyCopyable *ntc0, NonTriviallyCopyable *ntc1,
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Incomplete *i0, Incomplete *i1) {
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// OK
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memcpy(tc0, tc1, sizeof(*tc0));
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// OK
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memcpy(i0, i1, 10);
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// expected-warning@+2{{first argument in call to 'memcpy' is a pointer to non-trivially copyable type 'NonTriviallyCopyable'}}
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// expected-note@+1{{explicitly cast the pointer to silence this warning}}
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memcpy(ntc0, ntc1, sizeof(*ntc0));
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// ~ OK
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memcpy((void*)ntc0, ntc1, sizeof(*ntc0));
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// OK
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memcpy((void*)ntc0, (void*)ntc1, sizeof(*ntc0));
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}
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void test_memmove(TriviallyCopyable* tc0, TriviallyCopyable* tc1,
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NonTriviallyCopyable *ntc0, NonTriviallyCopyable *ntc1,
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Incomplete *i0, Incomplete *i1) {
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// OK
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memmove(tc0, tc1, sizeof(*tc0));
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// OK
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memmove(i0, i1, 10);
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// expected-warning@+2{{first argument in call to 'memmove' is a pointer to non-trivially copyable type 'NonTriviallyCopyable'}}
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// expected-note@+1{{explicitly cast the pointer to silence this warning}}
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memmove(ntc0, ntc1, sizeof(*ntc0));
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// ~ OK
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memmove((void*)ntc0, ntc1, sizeof(*ntc0));
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// OK
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memmove((void*)ntc0, (void*)ntc1, sizeof(*ntc0));
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}
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