[scudo] Fix for the Scudo interface function scope

Summary:
A forgotten include in `scudo_allocator.cpp` made the symbol only local :/

Before:
```
nm ./lib/clang/7.0.0/lib/linux/libclang_rt.scudo-i686-android.so | grep rss
00024730 t __scudo_set_rss_limit
```
After:
```
nm ./lib/clang/7.0.0/lib/linux/libclang_rt.scudo-i686-android.so | grep rs
00024760 T __scudo_set_rss_limit
```
And we want `T`!

This include also means that we can get rid of the `extern "C"` in the C++
file, the compiler does fine without it (note that this was already the case
for all the `__sanitizer_*` interface functions.

Reviewers: alekseyshl, eugenis

Reviewed By: eugenis

Subscribers: #sanitizers, llvm-commits

Differential Revision: https://reviews.llvm.org/D42199

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@322782 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 2 deletions

diff --git a/lib/scudo/scudo_allocator.cpp b/lib/scudo/scudo_allocator.cpp
index 1329497f4..0e18141f4 100644
--- a/lib/scudo/scudo_allocator.cpp
+++ b/lib/scudo/scudo_allocator.cpp
@@ -17,6 +17,7 @@
 #include "scudo_allocator.h"
 #include "scudo_crc32.h"
 #include "scudo_flags.h"
+#include "scudo_interface_internal.h"
 #include "scudo_tsd.h"
 #include "scudo_utils.h"
 
@@ -735,10 +736,8 @@ uptr __sanitizer_get_allocated_size(const void *Ptr) {
 
 // Interface functions
 
-extern "C" {
 void __scudo_set_rss_limit(uptr LimitMb, s32 HardLimit) {
   if (!SCUDO_CAN_USE_PUBLIC_INTERFACE)
     return;
   Instance.setRssLimit(LimitMb, !!HardLimit);
 }
-}  // extern "C"