59 lines · c
1// RUN: %clang_cc1 -verify=expected -Warray-bounds-pointer-arithmetic %s2// RUN: %clang_cc1 -verify=expected -Warray-bounds-pointer-arithmetic %s -fstrict-flex-arrays=03// RUN: %clang_cc1 -verify=expected,strict -Warray-bounds-pointer-arithmetic %s -fstrict-flex-arrays=24// RUN: %clang_cc1 -verify=expected,strict -Warray-bounds-pointer-arithmetic %s -fstrict-flex-arrays=35 6// Test case from PR106157struct ext2_super_block{8 unsigned char s_uuid[8]; // expected-note {{declared here}}9 int ignored; // Prevents "s_uuid" from being treated as a flexible array10 // member.11};12 13void* ext2_statfs (struct ext2_super_block *es,int a) {14 return (void *)es->s_uuid + sizeof(int); // no-warning15}16void* broken (struct ext2_super_block *es,int a) {17 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]')}}18}19 20// Test case reduced from PR1159421struct S {22 int n;23};24void pr11594(struct S *s) {25 int a[10];26 int *p = a - s->n;27}28 29// This resulted in an assertion failure because of the typedef instead of an30// explicit constant array type.31struct RDar11387038 {};32typedef struct RDar11387038 RDar11387038Array[1];33struct RDar11387038_Table {34 RDar11387038Array z; // strict-note {{array 'z' declared here}}35};36typedef struct RDar11387038_Table *TPtr;37typedef TPtr *TabHandle;38struct RDar11387038_B {39 TabHandle x;40};41typedef struct RDar11387038_B RDar11387038_B;42 43void radar11387038(void) {44 RDar11387038_B *pRDar11387038_B;45 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]')}}46}47 48void pr51682(void) {49 int arr[1];50 switch (0) {51 case 0:52 break;53 case 1:54 asm goto("" ::"r"(arr[42] >> 1)::failed);55 break;56 }57failed:;58}59