From 96f35266a5d6f4497f87d22ff4a38320e8a8b4d9 Mon Sep 17 00:00:00 2001
From: Michal Gorny <mgorny@gentoo.org>
Date: Sun, 22 Sep 2019 20:55:01 +0000
Subject: [PATCH] [clang] [Basic] Enable __has_feature(leak_sanitizer)

Add a 'leak_sanitizer' feature akin to existing '*_sanitizer' features
to let programmers switch code paths accounting for leak sanitizers
being enabled.

Differential Revision: https://reviews.llvm.org/D67719

llvm-svn: 372527
---
 clang/include/clang/Basic/Features.def          |  2 ++
 clang/test/Lexer/has_feature_leak_sanitizer.cpp | 11 +++++++++++
 2 files changed, 13 insertions(+)
 create mode 100644 clang/test/Lexer/has_feature_leak_sanitizer.cpp

diff --git a/clang/include/clang/Basic/Features.def b/clang/include/clang/Basic/Features.def
index 57132f5c0ffb9..28eb694ba9a89 100644
--- a/clang/include/clang/Basic/Features.def
+++ b/clang/include/clang/Basic/Features.def
@@ -39,6 +39,8 @@
 FEATURE(address_sanitizer,
         LangOpts.Sanitize.hasOneOf(SanitizerKind::Address |
                                    SanitizerKind::KernelAddress))
+FEATURE(leak_sanitizer,
+        LangOpts.Sanitize.has(SanitizerKind::Leak))
 FEATURE(hwaddress_sanitizer,
         LangOpts.Sanitize.hasOneOf(SanitizerKind::HWAddress |
                                    SanitizerKind::KernelHWAddress))
diff --git a/clang/test/Lexer/has_feature_leak_sanitizer.cpp b/clang/test/Lexer/has_feature_leak_sanitizer.cpp
new file mode 100644
index 0000000000000..00ca96f4ba73f
--- /dev/null
+++ b/clang/test/Lexer/has_feature_leak_sanitizer.cpp
@@ -0,0 +1,11 @@
+// RUN: %clang_cc1 -E -fsanitize=leak %s -o - | FileCheck --check-prefix=CHECK-LSAN %s
+// RUN: %clang_cc1 -E %s -o - | FileCheck --check-prefix=CHECK-NO-LSAN %s
+
+#if __has_feature(leak_sanitizer)
+int LeakSanitizerEnabled();
+#else
+int LeakSanitizerDisabled();
+#endif
+
+// CHECK-LSAN: LeakSanitizerEnabled
+// CHECK-NO-LSAN: LeakSanitizerDisabled