[scudo] Add some runtime tests for the minimal runtime

Summary:
As well as some tests to ensure that various combinations of the clang command
line flags work (shared/static/minimal).

Reviewers: eugenis, alekseyshl, vitalybuka

Reviewed By: vitalybuka

Subscribers: srhines, delcypher, #sanitizers, llvm-commits

Differential Revision: https://reviews.llvm.org/D48553

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@335981 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 43 insertions, 4 deletions

diff --git a/test/scudo/fsanitize.c b/test/scudo/fsanitize.c
new file mode 100644
index 000000000..7e5d5451f
--- /dev/null
+++ b/test/scudo/fsanitize.c
@@ -0,0 +1,28 @@
+// Test various -fsanitize= additional flags combinations.
+
+// RUN: %clang_scudo %s -o %t
+// RUN: not %run %t 2>&1 | FileCheck %s
+
+// RUN: %clang_scudo -shared-libsan %s -o %t
+// RUN: env LD_LIBRARY_PATH=`dirname %shared_libscudo`:$LD_LIBRARY_PATH not %run %t 2>&1 | FileCheck %s
+// RUN: %clang_scudo -shared-libsan -fsanitize-minimal-runtime %s -o %t
+// RUN: env LD_LIBRARY_PATH=`dirname %shared_minlibscudo`:$LD_LIBRARY_PATH not %run %t 2>&1 | FileCheck %s
+
+// RUN: %clang_scudo -static-libsan %s -o %t
+// RUN: not %run %t 2>&1 | FileCheck %s
+// RUN: %clang_scudo -static-libsan -fsanitize-minimal-runtime %s -o %t
+// RUN: not %run %t 2>&1 | FileCheck %s
+
+#include <assert.h>
+#include <stdlib.h>
+
+int main(int argc, char *argv[]) {
+  unsigned long *p = (unsigned long *)malloc(sizeof(unsigned long));
+  assert(p);
+  *p = 0;
+  free(p);
+  free(p);
+  return 0;
+}
+
+// CHECK: ERROR: invalid chunk state
diff --git a/test/scudo/lit.cfg b/test/scudo/lit.cfg
index b7f814ebc..df78d5f9d 100644
--- a/test/scudo/lit.cfg
+++ b/test/scudo/lit.cfg
@@ -10,9 +10,10 @@ config.test_source_root = os.path.dirname(__file__)
 
 # Path to the shared library
 shared_libscudo = os.path.join(config.compiler_rt_libdir, "libclang_rt.scudo%s.so" % config.target_suffix)
+shared_minlibscudo = os.path.join(config.compiler_rt_libdir, "libclang_rt.scudo_minimal-%s.so" % config.target_arch)
 
 # Test suffixes.
-config.suffixes = ['.c', '.cc', '.cpp']
+config.suffixes = ['.c', '.cc', '.cpp', '.test']
 
 # C & CXX flags.
 c_flags = ([config.target_cflags] +
@@ -32,14 +33,15 @@ cxx_flags = (c_flags + config.cxx_mode_flags + ["-std=c++11"])
 
 scudo_flags = ["-fsanitize=scudo"]
 
-def build_invocation(compile_flags):                                            
+def build_invocation(compile_flags):
   return " " + " ".join([config.clang] + compile_flags) + " "
 
-# Add clang substitutions.
+# Add substitutions.
 config.substitutions.append(("%clang ", build_invocation(c_flags)))
 config.substitutions.append(("%clang_scudo ", build_invocation(c_flags + scudo_flags)))
 config.substitutions.append(("%clangxx_scudo ", build_invocation(cxx_flags + scudo_flags)))
 config.substitutions.append(("%shared_libscudo", shared_libscudo))
+config.substitutions.append(("%shared_minlibscudo", shared_minlibscudo))
 
 # Platform-specific default SCUDO_OPTIONS for lit tests.
 default_scudo_opts = ''
diff --git a/test/scudo/preload.cpp b/test/scudo/preload.cpp
index b41a70e47..7fa8df4c6 100644
--- a/test/scudo/preload.cpp
+++ b/test/scudo/preload.cpp
@@ -1,7 +1,8 @@
 // Test that the preloaded runtime works without linking the static library.
 
 // RUN: %clang %s -lstdc++ -o %t
-// RUN: env LD_PRELOAD=%shared_libscudo not %run %t 2>&1 | FileCheck %s
+// RUN: env LD_PRELOAD=%shared_libscudo    not %run %t 2>&1 | FileCheck %s
+// RUN: env LD_PRELOAD=%shared_minlibscudo not %run %t 2>&1 | FileCheck %s
 
 // This way of setting LD_PRELOAD does not work with Android test runner.
 // REQUIRES: !android
diff --git a/test/scudo/symbols.test b/test/scudo/symbols.test
new file mode 100644
index 000000000..0425e62ba
--- /dev/null
+++ b/test/scudo/symbols.test
@@ -0,0 +1,8 @@
+UNSUPPORTED: android
+
+Verify that various functions are *not* present in the minimal binary. Presence
+of those symbols in the minimal runtime would mean that the split code made it
+back into the core Sanitizer runtime library.
+
+RUN: nm %shared_minlibscudo | not grep Symbolizer
+RUN: nm %shared_minlibscudo | not grep Coverage