alloca_safe_access.cpp
380 Bytes
// RUN: %clangxx_asan -O0 -mllvm -asan-instrument-dynamic-allocas %s -o %t
// RUN: %run %t 2>&1
//
#include <assert.h>
__attribute__((noinline)) void foo(int index, int len) {
volatile char str[len] __attribute__((aligned(32)));
assert(!(reinterpret_cast<long>(str) & 31L));
str[index] = '1';
}
int main(int argc, char **argv) {
foo(4, 5);
foo(39, 40);
return 0;
}