[XRay] [clang] Allow logging the first argument of a function call.
Summary:
Functions with the "xray_log_args" attribute will tell LLVM to emit a special
XRay sled for compiler-rt to copy any call arguments to your logging handler.
Reviewers: dberris
Reviewed By: dberris
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D29704
llvm-svn: 296999
diff --git a/clang/test/Sema/xray-log-args-oob.cpp b/clang/test/Sema/xray-log-args-oob.cpp
new file mode 100644
index 0000000..414bce0
--- /dev/null
+++ b/clang/test/Sema/xray-log-args-oob.cpp
@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 %s -verify -fsyntax-only -std=c++11 -x c++
+void foo [[clang::xray_log_args(1)]] (int);
+struct [[clang::xray_log_args(1)]] a { int x; }; // expected-warning {{'xray_log_args' attribute only applies to functions and methods}}
+
+void fop [[clang::xray_log_args(1)]] (); // expected-error {{'xray_log_args' attribute parameter 1 is out of bounds}}
+
+void foq [[clang::xray_log_args(-1)]] (); // expected-error {{'xray_log_args' attribute parameter 1 is out of bounds}}
+
+void fos [[clang::xray_log_args(0)]] (); // expected-error {{'xray_log_args' attribute parameter 1 is out of bounds}}