forked from OSchip/llvm-project
55 lines
1.1 KiB
C++
55 lines
1.1 KiB
C++
// Regression test for https://github.com/google/sanitizers/issues/691
|
|
|
|
// RUN: %clangxx_asan -O0 %s -o %t -fstack-protector
|
|
// RUN: %run %t 1 2>&1 | FileCheck %s
|
|
// RUN: %run %t 2 2>&1 | FileCheck %s
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
// MSVC provides _alloca instead of alloca.
|
|
#if defined(_MSC_VER) && !defined(alloca)
|
|
# define alloca _alloca
|
|
#endif
|
|
|
|
#if defined(__sun__) && defined(__svr4__)
|
|
#include <alloca.h>
|
|
#endif
|
|
|
|
|
|
void f1_alloca() {
|
|
char *dynamic_buffer = (char *)alloca(200);
|
|
fprintf(stderr, "dynamic_buffer = %p\n", dynamic_buffer);
|
|
memset(dynamic_buffer, 'y', 200);
|
|
return;
|
|
}
|
|
|
|
static const int kDynamicArraySize = 200;
|
|
|
|
void f1_vla() {
|
|
char dynamic_buffer[kDynamicArraySize];
|
|
fprintf(stderr, "dynamic_buffer = %p\n", dynamic_buffer);
|
|
memset(dynamic_buffer, 'y', kDynamicArraySize);
|
|
return;
|
|
}
|
|
|
|
void f2() {
|
|
char buf[1024];
|
|
memset(buf, 'x', 1024);
|
|
}
|
|
|
|
int main(int argc, const char *argv[]) {
|
|
if (!strcmp(argv[1], "1")) {
|
|
f1_alloca();
|
|
} else if (!strcmp(argv[1], "2")) {
|
|
f1_vla();
|
|
}
|
|
f2();
|
|
fprintf(stderr, "Done.\n");
|
|
return 0;
|
|
}
|
|
|
|
// CHECK-NOT: ERROR: AddressSanitizer
|
|
// CHECK: Done.
|