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TheRock/compiler/amd-llvm/compiler-rt/test/ubsan/TestCases/Pointer/index-overflow.cpp
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derek.holloway 7502bf64a4
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2026-09-02 16:34:47 -07:00

29 lines
1.2 KiB
C++

// RUN: %clangxx -fsanitize=pointer-overflow %s -o %t
// RUN: %run %t 2 2>&1 | FileCheck %s --implicit-check-not="runtime error:" --check-prefix=ERR2
// RUN: %run %t 1 2>&1 | FileCheck %s --implicit-check-not="runtime error:" --check-prefix=ERR1
// RUN: %run %t 0 2>&1 | FileCheck %s --implicit-check-not="runtime error:" --check-prefix=SAFE
// RUN: %run %t -1 2>&1 | FileCheck %s --implicit-check-not="runtime error:" --check-prefix=SAFE
// RUN: %run %t -2 2>&1 | FileCheck %s --implicit-check-not="runtime error:" --check-prefix=SAFE
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
int main(int argc, char *argv[]) {
// SAFE-NOT: runtime error
// ERR2: runtime error: pointer index expression with base {{.*}} overflowed to
// ERR2: runtime error: pointer index expression with base {{.*}} overflowed to
// ERR1: runtime error: applying non-zero offset to non-null pointer 0x{{.*}} produced null pointer
// ERR1: runtime error: applying non-zero offset to non-null pointer 0x{{.*}} produced null pointer
char *p = (char *)(UINTPTR_MAX);
printf("%p\n", p + atoi(argv[1]));
char *q = (char *)(UINTPTR_MAX);
printf("%p\n", p - (-atoi(argv[1])));
return 0;
}