[compiler-rt] recommit of r218481: ASan debugging API for report info extraction and locating addresses

Reviewed at http://reviews.llvm.org/D4527

Fixed a test case failure on 32-bit Linux, I did right shift on intptr_t, instead it should have been uintptr_t.



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@218538 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 48 insertions, 0 deletions

diff --git a/test/asan/TestCases/debug_report.cc b/test/asan/TestCases/debug_report.cc
new file mode 100644
index 000000000..acf52f918
--- /dev/null
+++ b/test/asan/TestCases/debug_report.cc
@@ -0,0 +1,48 @@
+// Checks that the ASan debugging API for getting report information
+// returns correct values.
+// RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
+
+#include <sanitizer/asan_interface.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int main() {
+  char *heap_ptr = (char *)malloc(10);
+  free(heap_ptr);
+  int present = __asan_report_present();
+  fprintf(stderr, "%s\n", (present == 0) ? "no report" : "");
+  // CHECK: no report
+  heap_ptr[0] = 'A'; // BOOM
+  return 0;
+}
+
+void __asan_on_error() {
+  int present = __asan_report_present();
+  void *pc = __asan_get_report_pc();
+  void *bp = __asan_get_report_bp();
+  void *sp = __asan_get_report_sp();
+  void *addr = __asan_get_report_address();
+  int is_write = __asan_get_report_access_type();
+  size_t access_size = __asan_get_report_access_size();
+  const char *description = __asan_get_report_description();
+
+  fprintf(stderr, "%s\n", (present == 1) ? "report" : "");
+  // CHECK: report
+  fprintf(stderr, "pc: %p\n", pc);
+  // CHECK: pc: 0x[[PC:[0-9a-f]+]]
+  fprintf(stderr, "bp: %p\n", bp);
+  // CHECK: bp: 0x[[BP:[0-9a-f]+]]
+  fprintf(stderr, "sp: %p\n", sp);
+  // CHECK: sp: 0x[[SP:[0-9a-f]+]]
+  fprintf(stderr, "addr: %p\n", addr);
+  // CHECK: addr: 0x[[ADDR:[0-9a-f]+]]
+  fprintf(stderr, "type: %s\n", (is_write ? "write" : "read"));
+  // CHECK: type: write
+  fprintf(stderr, "access_size: %ld\n", access_size);
+  // CHECK: access_size: 1
+  fprintf(stderr, "description: %s\n", description);
+  // CHECK: description: heap-use-after-free
+}
+
+// CHECK: AddressSanitizer: heap-use-after-free on address {{0x0*}}[[ADDR]] at pc {{0x0*}}[[PC]] bp {{0x0*}}[[BP]] sp {{0x0*}}[[SP]]
+// CHECK: WRITE of size 1 at {{0x0*}}[[ADDR]] thread T0