[sanitizer] Fix test to tolerate chmod not working as intended

Attempts to fix a bot failure from
634da7a on an Android bot:
https://lab.llvm.org/buildbot#builders/77/builds/14339

It appears that the chmod is not making the directory unwritable as
expected on this system for some reason. Adopt an approach used in
compiler-rt/test/fuzzer/fuzzer-dirs.test for systems with
non-functioning chmod by including illegal characters in directory.

Author: teresajohnson

compiler-rt/test/sanitizer_common/TestCases/Posix/sanitizer_set_report_path_test.cpp

@@ -1,11 +1,13 @@
 // Test __sanitizer_set_report_path and __sanitizer_get_report_path:
 // RUN: rm -rf %t.report_path
 // RUN: %clangxx -O2 %s -o %t
-// RUN: %run %t | FileCheck %s
+// RUN: %run %t %t | FileCheck %s
 // Try again with a directory without write access.
-// RUN: rm -rf %t.report_path && mkdir -p %t.report_path
-// RUN: chmod u-w %t.report_path || true
-// RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=FAIL
+// RUN: rm -rf %t.baddir && mkdir -p %t.baddir
+// RUN: chmod u-w %t.baddir || true
+// Use invalid characters in directory name in case chmod doesn't work as
+// intended.
+// RUN: not %run %t %t.baddir/?bad? 2>&1 | FileCheck %s --check-prefix=FAIL
 
 #include <assert.h>
 #include <sanitizer/common_interface_defs.h>
@@ -16,11 +18,11 @@ volatile int *null = 0;
 
 int main(int argc, char **argv) {
   char buff[1000];
-  sprintf(buff, "%s.report_path/report", argv[0]);
+  sprintf(buff, "%s.report_path/report", argv[1]);
   __sanitizer_set_report_path(buff);
   assert(strncmp(buff, __sanitizer_get_report_path(), strlen(buff)) == 0);
   printf("Path %s\n", __sanitizer_get_report_path());
 }
 
 // CHECK: Path {{.*}}Posix/Output/sanitizer_set_report_path_test.cpp.tmp.report_path/report.
-// FAIL: ERROR: Can't open file: {{.*}}Posix/Output/sanitizer_set_report_path_test.cpp.tmp.report_path/report.
+// FAIL: ERROR: Can't create directory: {{.*}}Posix/Output/sanitizer_set_report_path_test.cpp.tmp.baddir