Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/compiler-rt/test/ubsan/TestCases/Misc/Linux/lit.local.cfg

@@ -0,0 +1,9 @@
+def getRoot(config):
+  if not config.parent:
+    return config
+  return getRoot(config.parent)
+
+root = getRoot(config)
+
+if root.host_os not in ['Linux']:
+  config.unsupported = True

external/llvm-project/compiler-rt/test/ubsan/TestCases/Misc/Linux/print_stack_trace.cc

@@ -0,0 +1,23 @@
+// RUN: %clangxx -fsanitize=undefined -O0 %s -o %t && UBSAN_OPTIONS=stack_trace_format=DEFAULT:fast_unwind_on_fatal=1 %run %t 2>&1 | FileCheck %s
+// RUN: %clangxx -fsanitize=undefined -O0 %s -o %t && UBSAN_OPTIONS=stack_trace_format=DEFAULT:fast_unwind_on_fatal=0 %run %t 2>&1 | FileCheck %s
+
+// This test is temporarily disabled due to broken unwinding on ARM.
+// UNSUPPORTED: -linux-
+
+// The test doesn't pass on Darwin in UBSan-TSan configuration, because TSan is
+// using the slow unwinder which is not supported on Darwin. The test should
+// be universal after landing of https://reviews.llvm.org/D32806.
+
+#include <sanitizer/common_interface_defs.h>
+
+static inline void FooBarBaz() {
+  __sanitizer_print_stack_trace();
+}
+
+int main() {
+  FooBarBaz();
+  return 0;
+}
+
+// CHECK: {{.*}} in FooBarBaz{{.*}}print_stack_trace.cc{{.*}}
+// CHECK: {{.*}} in main{{.*}}print_stack_trace.cc{{.*}}

external/llvm-project/compiler-rt/test/ubsan/TestCases/Misc/Linux/ubsan_options.cc

@@ -0,0 +1,18 @@
+// RUN: %clangxx -fsanitize=integer -fsanitize-recover=integer %s -o %t
+// RUN: not %run %t 2>&1 | FileCheck %s
+
+// __ubsan_default_options() doesn't work on Darwin.
+// XFAIL: darwin
+
+#include <stdint.h>
+
+extern "C" const char *__ubsan_default_options() {
+  return "halt_on_error=1";
+}
+
+int main() {
+  (void)(uint64_t(10000000000000000000ull) + uint64_t(9000000000000000000ull));
+  // CHECK: ubsan_options.cc:[[@LINE-1]]:44: runtime error: unsigned integer overflow
+  return 0;
+}
+