vendor/compiler-rt/compiler-rt-trunk-r351319vendor/compiler-rt/compiler-rt-release_80-r351543

1 files changed, 33 insertions, 0 deletions

diff --git a/test/ubsan/TestCases/Pointer/alignment-assumption-attribute-alloc_align-on-function-variable.cpp b/test/ubsan/TestCases/Pointer/alignment-assumption-attribute-alloc_align-on-function-variable.cpp
new file mode 100644
index 000000000000..c71cb1e1bc7b
--- /dev/null
+++ b/test/ubsan/TestCases/Pointer/alignment-assumption-attribute-alloc_align-on-function-variable.cpp
@@ -0,0 +1,33 @@
+// 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 *__attribute__((alloc_align(2)))
+passthrough(char *x, unsigned long alignment) {
+  return x;
+}
+
+unsigned long alignment;
+
+int main(int argc, char* argv[]) {
+  char *ptr = (char *)malloc(2);
+
+  alignment = 0x8000;
+
+  passthrough(ptr + 1, alignment);
+  // CHECK: {{.*}}alignment-assumption-{{.*}}.cpp:[[@LINE-1]]:3: runtime error: assumption of 32768 byte alignment for pointer of type 'char *' failed
+  // CHECK: {{.*}}alignment-assumption-{{.*}}.cpp:[[@LINE-14]]:22: note: alignment assumption was specified here
+  // CHECK: 0x{{.*}}: note: address is {{.*}} aligned, misalignment offset is {{.*}} byte
+
+  free(ptr);
+
+  return 0;
+}