derek.holloway
7502bf64a4
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117 lines
7.3 KiB
C
117 lines
7.3 KiB
C
// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -fsyntax-only -Wno-unused -verify=addr64,expected %s
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// RUN: %clang_cc1 -triple i386-pc-linux-gnu -fsyntax-only -Wno-unused -verify=addr32,expected %s
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// RUN: %clang_cc1 -triple avr-pc-linux-gnu -fsyntax-only -Wno-unused -verify=addr16,expected %s
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struct S {
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long long a;
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char b;
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long long c;
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short d;
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};
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struct S s[]; // expected-warning {{tentative array definition}} expected-note {{declared here}} addr16-note {{declared here}}
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void f1(void) {
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++s[3].a;
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++s[7073650413200313099].b;
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// addr16-warning@-1 {{array index 7'073'650'413'200'313'099 refers past the last possible element for an array in 16-bit address space containing 152-bit (19-byte) elements (max possible 3'449 elements)}}
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// addr32-warning@-2 {{array index 7'073'650'413'200'313'099 refers past the last possible element for an array in 32-bit address space containing 192-bit (24-byte) elements (max possible 178'956'970 elements)}}
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// addr64-warning@-3 {{array index 7'073'650'413'200'313'099 refers past the last possible element for an array in 64-bit address space containing 256-bit (32-byte) elements (max possible 576'460'752'303'423'488 elements)}}
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++s[7073650].c;
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// addr16-warning@-1 {{array index 7'073'650 refers past the last possible element for an array in 16-bit address space containing 152-bit (19-byte) elements (max possible 3'449 elements)}}
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}
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long long ll[]; // expected-warning {{tentative array definition}} expected-note {{declared here}} addr16-note {{declared here}} addr32-note {{declared here}}
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void f2(void) {
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++ll[3];
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++ll[2705843009213693952];
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// addr16-warning@-1 {{array index 2'705'843'009'213'693'952 refers past the last possible element for an array in 16-bit address space containing 64-bit (8-byte) elements (max possible 8'192 elements)}}
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// addr32-warning@-2 {{array index 2'705'843'009'213'693'952 refers past the last possible element for an array in 32-bit address space containing 64-bit (8-byte) elements (max possible 536'870'912 elements)}}
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// addr64-warning@-3 {{array index 2'705'843'009'213'693'952 refers past the last possible element for an array in 64-bit address space containing 64-bit (8-byte) elements (max possible 2'305'843'009'213'693'952 elements)}}
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++ll[847073650];
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// addr16-warning@-1 {{array index 847'073'650 refers past the last possible element for an array in 16-bit address space containing 64-bit (8-byte) elements (max possible 8'192 elements)}}
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// addr32-warning@-2 {{array index 847'073'650 refers past the last possible element for an array in 32-bit address space containing 64-bit (8-byte) elements (max possible 536'870'912 elements)}}
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}
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void f3(struct S p[]) { // expected-note {{declared here}} addr16-note {{declared here}}
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++p[3].a;
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++p[7073650413200313099].b;
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// addr16-warning@-1 {{array index 7'073'650'413'200'313'099 refers past the last possible element for an array in 16-bit address space containing 152-bit (19-byte) elements (max possible 3'449 elements)}}
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// addr32-warning@-2 {{array index 7'073'650'413'200'313'099 refers past the last possible element for an array in 32-bit address space containing 192-bit (24-byte) elements (max possible 178'956'970 elements)}}
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// addr64-warning@-3 {{array index 7'073'650'413'200'313'099 refers past the last possible element for an array in 64-bit address space containing 256-bit (32-byte) elements (max possible 576'460'752'303'423'488 elements)}}
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++p[7073650].c;
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// addr16-warning@-1 {{array index 7'073'650 refers past the last possible element for an array in 16-bit address space containing 152-bit (19-byte) elements (max possible 3'449 elements)}}
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}
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void f4(struct S *p) { // expected-note {{declared here}} addr16-note {{declared here}}
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p += 3;
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p += 7073650413200313099;
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// addr16-warning@-1 {{the pointer incremented by 7'073'650'413'200'313'099 refers past the last possible element for an array in 16-bit address space containing 152-bit (19-byte) elements (max possible 3'449 elements)}}
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// addr32-warning@-2 {{the pointer incremented by 7'073'650'413'200'313'099 refers past the last possible element for an array in 32-bit address space containing 192-bit (24-byte) elements (max possible 178'956'970 elements)}}
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// addr64-warning@-3 {{the pointer incremented by 7'073'650'413'200'313'099 refers past the last possible element for an array in 64-bit address space containing 256-bit (32-byte) elements (max possible 576'460'752'303'423'488 elements)}}
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p += 7073650;
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// addr16-warning@-1 {{the pointer incremented by 7'073'650 refers past the last possible element for an array in 16-bit address space containing 152-bit (19-byte) elements (max possible 3'449 elements)}}
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}
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struct BQ {
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struct S bigblock[3276];
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};
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struct BQ bq[]; // expected-warning {{tentative array definition}} addr16-note {{declared here}}
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void f5(void) {
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++bq[0].bigblock[0].a;
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++bq[1].bigblock[0].a;
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// addr16-warning@-1 {{array index 1 refers past the last possible element for an array in 16-bit address space containing 497952-bit (62'244-byte) elements (max possible 1 element)}}
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}
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void f6(void) {
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int ints[] = {1, 3, 5, 7, 8, 6, 4, 5, 9};
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int const n_ints = sizeof(ints) / sizeof(int);
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unsigned long long const N = 3;
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int *middle = &ints[0] + n_ints / 2;
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// Should NOT produce a warning.
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*(middle + 5 - N) = 22;
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}
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void pr50741(void) {
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(void *)0 + 0xdead000000000000UL;
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// no array-bounds warning, and no crash
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}
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void func() {
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func + 0xdead000000000000UL; // no crash
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}
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struct {
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int _;
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char tail[]; // addr16-note {{declared here}} addr32-note {{declared here}}
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} fam;
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struct {
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int _;
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char tail[0]; // addr16-note {{declared here}} addr32-note {{declared here}}
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} fam0;
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struct {
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int _;
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char tail[1]; // addr16-note {{declared here}} addr32-note {{declared here}}
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} fam1;
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void fam_ily() {
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++fam.tail[7073650413200313099];
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// addr16-warning@-1 {{array index 7'073'650'413'200'313'099 refers past the last possible element for an array in 16-bit address space containing 8-bit (1-byte) elements (max possible 65'536 elements)}}
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// addr32-warning@-2 {{array index 7'073'650'413'200'313'099 refers past the last possible element for an array in 32-bit address space containing 8-bit (1-byte) elements (max possible 4'294'967'296 elements)}}
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// No warning for addr64 because the array index is inbound in that case.
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++fam0.tail[7073650413200313099];
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// addr16-warning@-1 {{array index 7'073'650'413'200'313'099 refers past the last possible element for an array in 16-bit address space containing 8-bit (1-byte) elements (max possible 65'536 elements)}}
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// addr32-warning@-2 {{array index 7'073'650'413'200'313'099 refers past the last possible element for an array in 32-bit address space containing 8-bit (1-byte) elements (max possible 4'294'967'296 elements)}}
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// No warning for addr64 because the array index is inbound in that case.
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++fam1.tail[7073650413200313099];
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// addr16-warning@-1 {{array index 7'073'650'413'200'313'099 refers past the last possible element for an array in 16-bit address space containing 8-bit (1-byte) elements (max possible 65'536 elements)}}
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// addr32-warning@-2 {{array index 7'073'650'413'200'313'099 refers past the last possible element for an array in 32-bit address space containing 8-bit (1-byte) elements (max possible 4'294'967'296 elements)}}
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// No warning for addr64 because the array index is inbound in that case.
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}
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