15d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// RUN: %clang_cl_asan -O0 %p/dll_host.cc -Fe%t 25d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// RUN: %clang_cl_asan -LD -O0 %s -Fe%t.dll 32d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: not %run %t %t.dll 2>&1 | FileCheck %s 42d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines 52d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines#include <stdio.h> 62d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines#include <string.h> 72d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines 82d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hinesextern "C" __declspec(dllexport) 92d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hinesint test_function() { 102d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines char str[] = "Hello!"; 112d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines if (6 != strlen(str)) 122d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines return 1; 132d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines printf("Initial test OK\n"); 142d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines fflush(0); 152d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK: Initial test OK 162d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines 172d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines str[6] = '!'; // Removes '\0' at the end! 182d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines int len = strlen(str); 192d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] 202d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// FIXME: Should be READ of size 1, see issue 155. 212d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK: READ of size {{[0-9]+}} at [[ADDR]] thread T0 222d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK-NEXT: {{#0 .*}}strlen 232d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK-NEXT: {{#1 .* test_function .*}}dll_intercept_strlen.cc:[[@LINE-5]] 242d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// 252d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK: Address [[ADDR]] is located in stack of thread T0 at offset {{.*}} in frame 262d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK-NEXT: test_function {{.*}}dll_intercept_strlen.cc: 272d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines return len > 42; 282d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines} 29