1 files changed, 30 insertions, 0 deletions
diff --git a/test/ubsan/TestCases/Pointer/alignment-assumption-attribute-align_value-on-paramvar.cpp b/test/ubsan/TestCases/Pointer/alignment-assumption-attribute-align_value-on-paramvar.cpp
new file mode 100644
index 0000000000000..774ba90fbe926
--- /dev/null
+++ b/test/ubsan/TestCases/Pointer/alignment-assumption-attribute-align_value-on-paramvar.cpp
@@ -0,0 +1,30 @@
+// RUN: %clang   -x c   -fsanitize=alignment -O0 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
+// RUN: %clang   -x c   -fsanitize=alignment -O1 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
+// RUN: %clang   -x c   -fsanitize=alignment -O2 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
+// RUN: %clang   -x c   -fsanitize=alignment -O3 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
+
+// RUN: %clang   -x c++ -fsanitize=alignment -O0 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
+// RUN: %clang   -x c++ -fsanitize=alignment -O1 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
+// RUN: %clang   -x c++ -fsanitize=alignment -O2 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
+// RUN: %clang   -x c++ -fsanitize=alignment -O3 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
+
+#include <stdlib.h>
+
+char *passthrough(__attribute__((align_value(0x8000))) char *x) {
+  return x;
+}
+
+int main(int argc, char* argv[]) {
+  char *ptr = (char *)malloc(2);
+
+  passthrough(ptr + 1);
+  // CHECK: {{.*}}alignment-assumption-{{.*}}.cpp:[[@LINE-7]]:10: runtime error: assumption of 32768 byte alignment for pointer of type 'char *' failed
+  // CHECK: {{.*}}alignment-assumption-{{.*}}.cpp:[[@LINE-9]]:34: note: alignment assumption was specified here
+  // CHECK: 0x{{.*}}: note: address is {{.*}} aligned, misalignment offset is {{.*}} byte
+
+  // FIXME: shouldn't there be an assumption on the caller's side too?
+
+  free(ptr);
+
+  return 0;
+}