e0ac46e69d
This reverts commit d618f1c3b12effd0c2bdb7d02108d3551f389d3d. This commit wasn't reviewed ahead of time and significant concerns were raised immediately after it landed. According to our developer policy this warrants immediate revert of the commit. https://llvm.org/docs/DeveloperPolicy.html#patch-reversion-policy Differential Revision: https://reviews.llvm.org/D155509
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
// RUN: %clang_cc1 -verify=expected -Warray-bounds-pointer-arithmetic %s
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// RUN: %clang_cc1 -verify=expected -Warray-bounds-pointer-arithmetic %s -fstrict-flex-arrays=0
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// RUN: %clang_cc1 -verify=expected,strict -Warray-bounds-pointer-arithmetic %s -fstrict-flex-arrays=2
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// RUN: %clang_cc1 -verify=expected,strict -Warray-bounds-pointer-arithmetic %s -fstrict-flex-arrays=3
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// Test case from PR10615
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struct ext2_super_block{
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unsigned char s_uuid[8]; // expected-note {{declared here}}
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int ignored; // Prevents "s_uuid" from being treated as a flexible array
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// member.
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};
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void* ext2_statfs (struct ext2_super_block *es,int a) {
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return (void *)es->s_uuid + sizeof(int); // no-warning
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}
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void* broken (struct ext2_super_block *es,int a) {
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return (void *)es->s_uuid + 9; // expected-warning {{the pointer incremented by 9 refers past the end of the array (that has type 'unsigned char[8]')}}
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}
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// Test case reduced from PR11594
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struct S {
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int n;
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};
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void pr11594(struct S *s) {
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int a[10];
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int *p = a - s->n;
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}
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// Test case reduced from <rdar://problem/11387038>. This resulted in
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// an assertion failure because of the typedef instead of an explicit
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// constant array type.
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struct RDar11387038 {};
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typedef struct RDar11387038 RDar11387038Array[1];
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struct RDar11387038_Table {
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RDar11387038Array z; // strict-note {{array 'z' declared here}}
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};
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typedef struct RDar11387038_Table *TPtr;
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typedef TPtr *TabHandle;
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struct RDar11387038_B {
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TabHandle x;
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};
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typedef struct RDar11387038_B RDar11387038_B;
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void radar11387038(void) {
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RDar11387038_B *pRDar11387038_B;
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struct RDar11387038 *y = &(*pRDar11387038_B->x)->z[4]; // strict-warning {{array index 4 is past the end of the array (that has type 'struct RDar11387038[1]')}}
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}
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void pr51682(void) {
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int arr[1];
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switch (0) {
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case 0:
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break;
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case 1:
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asm goto("" ::"r"(arr[42] >> 1)::failed);
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break;
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}
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failed:;
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}
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