Add more advanced round-trip test target that runs decompiled output back

through the originating Python compiler (Linux only for now)

CMakeLists.txt

@@ -65,7 +65,13 @@ if(POLICY CMP0037)
     # Don't complain about adding a target named "test"
     cmake_policy(SET CMP0037 OLD)
 endif()
+
 add_custom_target(test "${CMAKE_CURRENT_SOURCE_DIR}/pycdc_test.sh"
                        "${CMAKE_CURRENT_SOURCE_DIR}/tests"
                   WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
 add_dependencies(test pycdc)
+
+add_custom_target(rt_test "${CMAKE_CURRENT_SOURCE_DIR}/pycdc_rt_test.sh"
+                          "${CMAKE_CURRENT_BINARY_DIR}/tests"
+                  WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
+add_dependencies(rt_test test)

pycdc_rt_test.sh

@@ -0,0 +1,116 @@
+#!/bin/bash
+
+testdir="$1"
+srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+startdir="$(pwd)"
+
+if [[ -z "$testdir" ]]; then
+    echo "Missing required parameter: testdir" >&2
+    exit 1
+fi
+
+py_versions=('1.5.2' '2.2.3' '2.5.6' '2.6.9' '2.7.12' '3.1.5' '3.4.5' '3.5.2')
+py_url="http://www.python.org/ftp/python"
+
+# Make subcommand errors fatal
+set -e
+
+fetch_python() {
+    local url="$1"
+    local tarball="${url##*/}"
+    local version="$2"
+
+    if [[ ! -d "Python-${version}" ]]; then
+        echo "Downloading Python ${version}"
+        curl -LO# "$url"
+        tar xzf "$tarball"
+        if [[ -f "${srcdir}/tests/python-builds/Python-${version}.patch" ]]; then
+            cd "Python-${version}"
+            patch -p1 < "${srcdir}/tests/python-builds/Python-${version}.patch"
+            cd ..
+        fi
+    fi
+}
+
+cd "$startdir"
+mkdir -p python-builds
+cd python-builds
+
+# Special case for Python 1.5
+fetch_python "${py_url}/src/py152.tgz" "1.5.2"
+
+for pv in ${py_versions[@]:1}; do
+    fetch_python "${py_url}/${pv}/Python-${pv}.tgz" "$pv"
+done
+
+for pv in ${py_versions[@]}; do
+    if [[ ! -x "Python-${pv}/python" ]]; then
+        echo -n "Building Python ${pv}... "
+        cd "Python-${pv}"
+        rm -f "../Python-${pv}.conf.log"
+        rm -f "../Python-${pv}.build.log"
+        if ! ./configure > "../Python-${pv}.conf.log" 2>&1 ; then
+            echo "Configure failed!"
+            echo "See python-builds/Python-${pv}.conf.log for details"
+            exit 1
+        fi
+        if ! make > "../Python-${pv}.build.log" 2>&1 ; then
+            echo "Build failed!"
+            echo "See python-builds/Python-${pv}.build.log for details"
+            exit 1
+        fi
+        cd ..
+        echo "Success!"
+    fi
+done
+
+# Run any .pyc.src files in $testdir back through its respective python compiler
+cd "$startdir"
+
+fails=0
+files=()
+errors=()
+
+set +e
+
+for srcf in "$testdir"/*.pyc.src; do
+    # There's probably a better way...
+    srcver=$(grep '# File: .* (Python [0-9]\.[0-9]\+)$' "$srcf" | sed -e 's/.* (Python //' -e 's/)//')
+
+    _found=0
+    for version in ${py_versions[@]}; do
+        if [[ "${version%.*}" == "$srcver" ]]; then
+            _found=1
+            base="tests/$(basename "$srcf")"
+            python-builds/Python-${version}/python \
+                    -c "import py_compile; py_compile.compile('$srcf')" 2>"$base.rterr"
+            if (( $? )) || [[ -s "$base.rterr" ]]; then
+                let fails+=1
+                files+=("$srcf")
+                errors+=("$(cat "$base.rterr")")
+                echo -ne "\033[31m.\033[m"
+            else
+                echo -ne "\033[32m.\033[m"
+            fi
+        fi
+    done
+
+    if (( _found == 0 )); then
+        let fails+=1
+        files+=("$srcf")
+        errors+=("No python compiler found for $srcf ($srcver)")
+        echo -ne "\033[31m.\033[m"
+    fi
+done
+
+if (( $fails == 0 ))
+then
+    echo -e "\n\nAll tests passed!"
+else
+    echo -e "\n\n$fails tests failed:"
+    for ((i=0; i<${#files[@]}; i++))
+    do
+        echo -e "\t\033[31m${files[i]}\033[m"
+        echo -e "${errors[i]}\n"
+    done
+fi

pycdc_test.sh

@@ -1,6 +1,13 @@
 #!/bin/bash
 
 testdir="$1"
+
+if [[ -z "$testdir" ]]
+then
+    echo "Missing required parameter: testdir" >&2
+    exit 1
+fi
+
 mkdir -p tests
 
 fails=0

tests/python-builds/Python-1.5.2.patch

@@ -0,0 +1,40 @@
+diff --git a/Objects/fileobject.c b/Objects/fileobject.c
+index b0eb332..e1aa559 100644
+--- a/Objects/fileobject.c
++++ b/Objects/fileobject.c
+@@ -587,7 +587,7 @@ file_readinto(f, args)
+ */
+ 
+ static PyObject *
+-getline(f, n)
++_py_getline(f, n)
+ 	PyFileObject *f;
+ 	int n;
+ {
+@@ -709,7 +709,7 @@ PyFile_GetLine(f, n)
+ 	}
+ 	if (((PyFileObject*)f)->f_fp == NULL)
+ 		return err_closed();
+-	return getline((PyFileObject *)f, n);
++	return _py_getline((PyFileObject *)f, n);
+ }
+ 
+ /* Python method */
+@@ -729,7 +729,7 @@ file_readline(f, args)
+ 		return PyString_FromString("");
+ 	if (n < 0)
+ 		n = 0;
+-	return getline(f, n);
++	return _py_getline(f, n);
+ }
+ 
+ static PyObject *
+@@ -823,7 +823,7 @@ file_readlines(f, args)
+ 			goto error;
+ 		if (sizehint > 0) {
+ 			/* Need to complete the last line */
+-			PyObject *rest = getline(f, 0);
++			PyObject *rest = _py_getline(f, 0);
+ 			if (rest == NULL) {
+ 				Py_DECREF(line);
+ 				goto error;

tests/python-builds/Python-2.5.6.patch

@@ -0,0 +1,13 @@
+diff --git a/Makefile.pre.in b/Makefile.pre.in
+index 25a82af..9700faa 100644
+--- a/Makefile.pre.in
++++ b/Makefile.pre.in
+@@ -458,7 +458,7 @@ Modules/getbuildinfo.o: $(PARSER_OBJS) \
+ 		$(SIGNAL_OBJS) \
+ 		$(MODOBJS) \
+ 		$(srcdir)/Modules/getbuildinfo.c
+-	$(CC) -c $(PY_CFLAGS) -DSVNVERSION=\"`LC_ALL=C $(SVNVERSION)`\" -o $@ $(srcdir)/Modules/getbuildinfo.c
++	$(CC) -c $(PY_CFLAGS) -DSVNVERSION="\"`LC_ALL=C $(SVNVERSION)`\"" -o $@ $(srcdir)/Modules/getbuildinfo.c
+ 
+ Modules/getpath.o: $(srcdir)/Modules/getpath.c Makefile
+ 	$(CC) -c $(PY_CFLAGS) -DPYTHONPATH='"$(PYTHONPATH)"' \