Fix and add tests

Author: alazarev

compiler-rt/test/ubsan_minimal/TestCases/misalignment.cpp

@@ -0,0 +1,14 @@
+// RUN: %clang_min_runtime -fsanitize=alignment %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK
+
+void f(int& n) {}
+
+int* t;
+
+int main() {
+    int r;
+    t = (int*)(((char*)&r) + 1);
+    // CHECK: ubsan: type-mismatch by 0x{{[[:xdigit:]]+}} address 0x{{[[:xdigit:]]+$}}
+    // CHECK-NOT: type-mismatch
+
+    f(*t);
+}

compiler-rt/test/ubsan_minimal/TestCases/null.cpp

@@ -0,0 +1,11 @@
+// RUN: %clang_min_runtime -fsanitize=null %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK
+
+void f(int& n) {}
+
+int* t;
+
+int main() {
+    // CHECK: ubsan: type-mismatch by 0x{{[[:xdigit:]]+}} address 0x{{[[:xdigit:]]+$}}
+    // CHECK-NOT: type-mismatch
+    f(*t);
+}

compiler-rt/test/ubsan_minimal/TestCases/override-callback.c

@@ -8,12 +8,12 @@
 
 static int Result;
 
-void __ubsan_report_error(const char *kind, uintptr_t caller) {
+void __ubsan_minimal_report_error(const char *kind, uintptr_t caller) {
   fprintf(stderr, "CUSTOM_CALLBACK: %s\n", kind);
 }
 
 #if OVERRIDE
-void __ubsan_report_error_fatal(const char *kind, uintptr_t caller) {
+void __ubsan_minimal_report_error_fatal(const char *kind, uintptr_t caller) {
   fprintf(stderr, "FATAL_CALLBACK: %s\n", kind);
 }
 #endif