90 lines
2.0 KiB
C++
90 lines
2.0 KiB
C++
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// RUN: %clang_cc1 -fsyntax-only -std=c++11 -Wloop-analysis -verify %s
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// RUN: %clang_cc1 -fsyntax-only -std=c++11 -Wrange-loop-analysis -verify %s
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void test_POD_64_bytes() {
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struct Record {
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char a[64];
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};
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Record records[8];
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for (const auto r : records)
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(void)r;
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}
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void test_POD_65_bytes() {
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struct Record {
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char a[65];
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};
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// expected-warning@+3 {{loop variable 'r' creates a copy from type 'const Record'}}
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// expected-note@+2 {{use reference type 'const Record &' to prevent copying}}
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Record records[8];
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for (const auto r : records)
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(void)r;
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}
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void test_TriviallyCopyable_64_bytes() {
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struct Record {
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Record() {}
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char a[64];
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};
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Record records[8];
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for (const auto r : records)
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(void)r;
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}
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void test_TriviallyCopyable_65_bytes() {
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struct Record {
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Record() {}
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char a[65];
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};
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// expected-warning@+3 {{loop variable 'r' creates a copy from type 'const Record'}}
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// expected-note@+2 {{use reference type 'const Record &' to prevent copying}}
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Record records[8];
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for (const auto r : records)
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(void)r;
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}
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void test_NonTriviallyCopyable() {
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struct Record {
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Record() {}
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~Record() {}
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volatile int a;
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int b;
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};
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// expected-warning@+3 {{loop variable 'r' creates a copy from type 'const Record'}}
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// expected-note@+2 {{use reference type 'const Record &' to prevent copying}}
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Record records[8];
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for (const auto r : records)
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(void)r;
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}
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void test_TrivialABI_64_bytes() {
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struct [[clang::trivial_abi]] Record {
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Record() {}
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~Record() {}
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char a[64];
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};
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Record records[8];
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for (const auto r : records)
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(void)r;
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}
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void test_TrivialABI_65_bytes() {
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struct [[clang::trivial_abi]] Record {
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Record() {}
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~Record() {}
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char a[65];
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};
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// expected-warning@+3 {{loop variable 'r' creates a copy from type 'const Record'}}
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// expected-note@+2 {{use reference type 'const Record &' to prevent copying}}
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Record records[8];
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for (const auto r : records)
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(void)r;
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}
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