76 lines
2 KiB
C++
76 lines
2 KiB
C++
// RUN: %clang_cc1 -triple=x86_64-none-none -Wpadded -Wpacked -verify %s -emit-llvm-only
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struct S1 {
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char c;
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short s; // expected-warning {{padding struct 'S1' with 1 byte to align 's'}}
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long l; // expected-warning {{padding struct 'S1' with 4 bytes to align 'l'}}
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};
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struct S2 { // expected-warning {{padding size of 'S2' with 3 bytes to alignment boundary}}
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int i;
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char c;
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};
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struct S3 {
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char c;
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int i;
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} __attribute__((packed));
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struct S4 {
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int i; // expected-warning {{packed attribute is unnecessary for 'i'}}
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char c;
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} __attribute__((packed));
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struct S5 {
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char c;
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union {
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char c;
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int i;
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} u; // expected-warning {{padding struct 'S5' with 3 bytes to align 'u'}}
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};
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struct S6 { // expected-warning {{padding size of 'S6' with 30 bits to alignment boundary}}
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int i : 2;
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};
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struct S7 { // expected-warning {{padding size of 'S7' with 7 bytes to alignment boundary}}
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char c;
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virtual void m();
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};
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struct B {
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char c;
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};
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struct S8 : B {
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int i; // expected-warning {{padding struct 'S8' with 3 bytes to align 'i'}}
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};
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struct S9 { // expected-warning {{packed attribute is unnecessary for 'S9'}}
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int x; // expected-warning {{packed attribute is unnecessary for 'x'}}
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int y; // expected-warning {{packed attribute is unnecessary for 'y'}}
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} __attribute__((packed));
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struct S10 { // expected-warning {{packed attribute is unnecessary for 'S10'}}
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int x; // expected-warning {{packed attribute is unnecessary for 'x'}}
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char a,b,c,d;
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} __attribute__((packed));
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struct S11 {
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bool x;
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char a,b,c,d;
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} __attribute__((packed));
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struct S12 {
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bool b : 1;
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char c; // expected-warning {{padding struct 'S12' with 7 bits to align 'c'}}
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};
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struct S13 { // expected-warning {{padding size of 'S13' with 6 bits to alignment boundary}}
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char c;
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bool b : 10; // expected-warning {{size of bit-field 'b' (10 bits) exceeds the size of its type}}
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};
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// The warnings are emitted when the layout of the structs is computed, so we have to use them.
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void f(S1*, S2*, S3*, S4*, S5*, S6*, S7*, S8*, S9*, S10*, S11*, S12*, S13*) { }
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