Usability improvements to 3C regression test updating programs.

- Make directly executable (on Linux at least).

- Chdir to the containing directory if needed.

- Access the bin directory via a relative path rather than requiring the
  user to modify an absolute path in the program.

Author: mattmccutchen-cci

clang/test/3C/processor.py

@@ -1,8 +1,11 @@
+#!/usr/bin/env python
 import fileinput 
 import sys
 import os
 
-path_to_monorepo = "/Users/shilpa-roy/checkedc-clang/build/bin/"
+os.chdir(os.path.dirname(__file__))
+# Relative path from clang/test/3C/
+bin_path = "../../../build/bin/"
 
 structs = """
 struct np {
@@ -134,8 +137,8 @@ def process_smart(filename):
     file.write('\n\n'.join(test)) 
     file.close()
 
-    os.system("{}3c -alltypes -addcr -output-postfix=checkedALL {}".format(path_to_monorepo, filename))
-    os.system("{}3c -addcr -output-postfix=checkedNOALL {}".format(path_to_monorepo, filename)) 
+    os.system("{}3c -alltypes -addcr -output-postfix=checkedALL {}".format(bin_path, filename))
+    os.system("{}3c -addcr -output-postfix=checkedNOALL {}".format(bin_path, filename)) 
 
     process_file_smart(filename, cnameNOALL, cnameALL) 
     return

clang/test/3C/test_updater.py

@@ -1,8 +1,11 @@
+#!/usr/bin/env python
 import fileinput 
 import sys
 import os
 
-path_to_monorepo = "/Users/shilpa-roy/checkedc-clang/build/bin/"
+os.chdir(os.path.dirname(__file__))
+# Relative path from clang/test/3C/
+bin_path = "../../../build/bin/"
 
 structs = """
 struct np {
@@ -82,8 +85,8 @@ def process_smart(filename, diff):
     cnameNOALL = filename + "heckedNOALL.c" 
     cnameALL = filename + "heckedALL.c"
 
-    os.system("{}3c -alltypes -addcr -output-postfix=checkedALL {}".format(path_to_monorepo, filename))
-    os.system("{}3c -addcr -output-postfix=checkedNOALL {}".format(path_to_monorepo, filename)) 
+    os.system("{}3c -alltypes -addcr -output-postfix=checkedALL {}".format(bin_path, filename))
+    os.system("{}3c -addcr -output-postfix=checkedNOALL {}".format(bin_path, filename)) 
 
     process_file_smart(filename, cnameNOALL, cnameALL, diff) 
     return

clang/test/3C/testgenerator.py

@@ -1,14 +1,14 @@
+#!/usr/bin/env python
 # Author: Shilpa Roy 
 # Last updated: June 16, 2020
 
 import itertools as it
 import os
 import subprocess
 
-#### USERS PUT YOUR INFO HERE ##### 
-
-# Please remember to add a '/' at the very end!
-path_to_monorepo = "/Users/shilpa-roy/checkedc/checkedc-clang/build/bin/"
+os.chdir(os.path.dirname(__file__))
+# Relative path from clang/test/3C/
+bin_path = "../../../build/bin/"
 
 
 
@@ -726,23 +726,23 @@ def annot_gen_smart(prefix, proto, suffix):
 
     # run the porting tool on the file(s)
     if proto=="multi": 
-        os.system("{}3c -alltypes -addcr -output-postfix=checkedALL {} {}".format(path_to_monorepo, name, name2))
-        os.system("{}3c -addcr -output-postfix=checkedNOALL {} {}".format(path_to_monorepo, name, name2))
+        os.system("{}3c -alltypes -addcr -output-postfix=checkedALL {} {}".format(bin_path, name, name2))
+        os.system("{}3c -addcr -output-postfix=checkedNOALL {} {}".format(bin_path, name, name2))
     else: 
-        os.system("{}3c -alltypes -addcr -output-postfix=checkedALL {}".format(path_to_monorepo, name))
-        os.system("{}3c -addcr -output-postfix=checkedNOALL {}".format(path_to_monorepo, name))
+        os.system("{}3c -alltypes -addcr -output-postfix=checkedALL {}".format(bin_path, name))
+        os.system("{}3c -addcr -output-postfix=checkedNOALL {}".format(bin_path, name))
 
     # compile the files and if it doesn't compile, then let's indicate that a bug was generated for this file
     bug_generated = False
     if proto != "multi":
-        out = subprocess.Popen(['{}clang'.format(path_to_monorepo), '-c', cnameNOALL], stdout=subprocess.PIPE, stderr=subprocess.STDOUT) 
+        out = subprocess.Popen(['{}clang'.format(bin_path), '-c', cnameNOALL], stdout=subprocess.PIPE, stderr=subprocess.STDOUT) 
         stdout, stderr = out.communicate()
         stdout = str(stdout) 
         if "error:" in stdout: 
             bug_generated = True
             # name = prefix + proto + suffix + "_BUG.c" 
     else: 
-        out = subprocess.Popen(['{}clang'.format(path_to_monorepo), '-c', cnameNOALL, cname2NOALL], stdout=subprocess.PIPE, stderr=subprocess.STDOUT) 
+        out = subprocess.Popen(['{}clang'.format(bin_path), '-c', cnameNOALL, cname2NOALL], stdout=subprocess.PIPE, stderr=subprocess.STDOUT) 
         stdout, stderr = out.communicate()
         stdout = str(stdout) 
         if "error:" in stdout: