[HWASan] Initalize shadow earler.

Summary:
Initialize shadow memory before calling more libc functions to allow
for HWASan-instrumented libc.

Reviewers: eugenis

Subscribers: kubamracek, delcypher, #sanitizers, llvm-commits

Differential Revision: https://reviews.llvm.org/D48551

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@335502 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 4 deletions

diff --git a/lib/hwasan/hwasan.cc b/lib/hwasan/hwasan.cc
index 05818e1ca..7dab8249e 100644
--- a/lib/hwasan/hwasan.cc
+++ b/lib/hwasan/hwasan.cc
@@ -177,10 +177,6 @@ void __hwasan_init() {
 
   __sanitizer_set_report_path(common_flags()->log_path);
 
-  InitializeInterceptors();
-  InstallDeadlySignalHandlers(HwasanOnDeadlySignal);
-  InstallAtExitHandler(); // Needs __cxa_atexit interceptor.
-
   DisableCoreDumperIfNecessary();
   if (!InitShadow()) {
     Printf("FATAL: HWAddressSanitizer cannot mmap the shadow memory.\n");
@@ -194,6 +190,10 @@ void __hwasan_init() {
     Die();
   }
 
+  InitializeInterceptors();
+  InstallDeadlySignalHandlers(HwasanOnDeadlySignal);
+  InstallAtExitHandler(); // Needs __cxa_atexit interceptor.
+
   Symbolizer::GetOrInit()->AddHooks(EnterSymbolizer, ExitSymbolizer);
 
   InitializeCoverage(common_flags()->coverage, common_flags()->coverage_dir);