[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

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@372527 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/clang/Basic/Features.def b/include/clang/Basic/Features.def
index 57132f5c0ffb94b75c395354f3d4f0290e24d654..28eb694ba9a89c1fa90decb8ea846827ca1107d9 100644 (file)
--- a/include/clang/Basic/Features.def
+++ b/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/test/Lexer/has_feature_leak_sanitizer.cpp b/test/Lexer/has_feature_leak_sanitizer.cpp
new file mode 100644 (file)
index 0000000..00ca96f
--- /dev/null
+++ b/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