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154 lines
4.1 KiB
154 lines
4.1 KiB
// 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;
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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 {
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int x;
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int y;
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} __attribute__((packed));
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struct S10 {
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int x;
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char a,b,c,d;
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} __attribute__((packed));
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struct S11 { // expected-warning {{packed attribute is unnecessary for '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;
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};
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struct S14 { // expected-warning {{packed attribute is unnecessary for 'S14'}}
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char a,b,c,d;
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} __attribute__((packed));
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struct S15 { // expected-warning {{packed attribute is unnecessary for 'S15'}}
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struct S14 s;
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char a;
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} __attribute__((packed));
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struct S16 { // expected-warning {{padding size of 'S16' with 2 bytes to alignment boundary}} expected-warning {{packed attribute is unnecessary for 'S16'}}
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char a,b;
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} __attribute__((packed, aligned(4)));
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struct S17 {
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struct S16 s;
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char a,b;
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} __attribute__((packed, aligned(2)));
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struct S18 { // expected-warning {{padding size of 'S18' with 2 bytes to alignment boundary}} expected-warning {{packed attribute is unnecessary for 'S18'}}
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struct S16 s;
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char a,b;
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} __attribute__((packed, aligned(4)));
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struct S19 { // expected-warning {{packed attribute is unnecessary for 'S19'}}
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bool b;
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char a;
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} __attribute__((packed, aligned(1)));
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struct S20 {
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int i;
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char a;
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} __attribute__((packed, aligned(1)));
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struct S21 { // expected-warning {{padding size of 'S21' with 4 bits to alignment boundary}}
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unsigned char a : 6;
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unsigned char b : 6;
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} __attribute__((packed, aligned(1)));
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struct S22 { // expected-warning {{packed attribute is unnecessary for 'S22'}}
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unsigned char a : 4;
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unsigned char b : 4;
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} __attribute__((packed));
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struct S23 { // expected-warning {{padding size of 'S23' with 4 bits to alignment boundary}} expected-warning {{packed attribute is unnecessary for 'S23'}}
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unsigned char a : 2;
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unsigned char b : 2;
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} __attribute__((packed));
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struct S24 {
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unsigned char a : 6;
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unsigned char b : 6;
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unsigned char c : 6;
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unsigned char d : 6;
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unsigned char e : 6;
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unsigned char f : 6;
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unsigned char g : 6;
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unsigned char h : 6;
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} __attribute__((packed));
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struct S25 { // expected-warning {{padding size of 'S25' with 7 bits to alignment boundary}} expected-warning {{packed attribute is unnecessary for 'S25'}}
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unsigned char a;
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unsigned char b : 1;
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} __attribute__((packed));
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struct S26 { // expected-warning {{packed attribute is unnecessary for 'S26'}}
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unsigned char a : 1;
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unsigned char b; //expected-warning {{padding struct 'S26' with 7 bits to align 'b'}}
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} __attribute__((packed));
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struct S27 { // expected-warning {{padding size of 'S27' with 7 bits to alignment boundary}}
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unsigned char a : 1;
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unsigned char b : 8;
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} __attribute__((packed));
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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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S14*, S15*, S16*, S17*, S18*, S19*, S20*, S21*, S22*, S23*, S24*, S25*,
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S26*, S27*){}
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