Test cases: Unwanted RPATH overwrite and Failing to patch internal non-py extensions

tests/pr134/hello_module/.gitignore

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+
+# Created by https://www.gitignore.io/api/python,linux,macos
+# Edit at https://www.gitignore.io/?templates=python,linux,macos
+
+### Linux ###
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+### macOS ###
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### Python ###
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# celery beat schedule file
+celerybeat-schedule
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+### Python Patch ###
+.venv/
+
+# End of https://www.gitignore.io/api/python,linux,macos

tests/pr134/hello_module/README.md

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+# Python 3 extension example
+
+This example was inspired from https://gist.github.com/physacco/2e1b52415f3a964ad2a542a99bebed8f
+

tests/pr134/hello_module/extensions/.gitignore

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+testzlib

tests/pr134/hello_module/extensions/testzlib.cpp

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+// Copyright 2007 Timo Bingmann <tb@panthema.net>
+// Distributed under the Boost Software License, Version 1.0.
+// (See http://www.boost.org/LICENSE_1_0.txt)
+// Taken from https://panthema.net/2007/0328-ZLibString.html
+
+#include <string.h>
+#include <stdexcept>
+#include <iostream>
+#include <iomanip>
+#include <sstream>
+
+#include <zlib.h>
+#include "testzlib.h"
+
+/** Compress a STL string using zlib with given compression level and return
+  * the binary data. */
+std::string compress_string(const std::string& str,
+                            int compressionlevel)
+{
+    z_stream zs;                        // z_stream is zlib's control structure
+    memset(&zs, 0, sizeof(zs));
+
+    if (deflateInit(&zs, compressionlevel) != Z_OK)
+        throw(std::runtime_error("deflateInit failed while compressing."));
+
+    zs.next_in = (Bytef*)str.data();
+    zs.avail_in = str.size();           // set the z_stream's input
+
+    int ret;
+    char outbuffer[32768];
+    std::string outstring;
+
+    // retrieve the compressed bytes blockwise
+    do {
+        zs.next_out = reinterpret_cast<Bytef*>(outbuffer);
+        zs.avail_out = sizeof(outbuffer);
+
+        ret = deflate(&zs, Z_FINISH);
+
+        if (outstring.size() < zs.total_out) {
+            // append the block to the output string
+            outstring.append(outbuffer,
+                             zs.total_out - outstring.size());
+        }
+    } while (ret == Z_OK);
+
+    deflateEnd(&zs);
+
+    if (ret != Z_STREAM_END) {          // an error occurred that was not EOF
+        std::ostringstream oss;
+        oss << "Exception during zlib compression: (" << ret << ") " << zs.msg;
+        throw(std::runtime_error(oss.str()));
+    }
+
+    return outstring;
+}
+
+/** Decompress an STL string using zlib and return the original data. */
+std::string decompress_string(const std::string& str)
+{
+    z_stream zs;                        // z_stream is zlib's control structure
+    memset(&zs, 0, sizeof(zs));
+
+    if (inflateInit(&zs) != Z_OK)
+        throw(std::runtime_error("inflateInit failed while decompressing."));
+
+    zs.next_in = (Bytef*)str.data();
+    zs.avail_in = str.size();
+
+    int ret;
+    char outbuffer[32768];
+    std::string outstring;
+
+    // get the decompressed bytes blockwise using repeated calls to inflate
+    do {
+        zs.next_out = reinterpret_cast<Bytef*>(outbuffer);
+        zs.avail_out = sizeof(outbuffer);
+
+        ret = inflate(&zs, 0);
+
+        if (outstring.size() < zs.total_out) {
+            outstring.append(outbuffer,
+                             zs.total_out - outstring.size());
+        }
+
+    } while (ret == Z_OK);
+
+    inflateEnd(&zs);
+
+    if (ret != Z_STREAM_END) {          // an error occurred that was not EOF
+        std::ostringstream oss;
+        oss << "Exception during zlib decompression: (" << ret << ") "
+            << zs.msg;
+        throw(std::runtime_error(oss.str()));
+    }
+
+    return outstring;
+}
+
+/** Small dumb tool (de)compressing cin to cout. It holds all input in memory,
+  * so don't use it for huge files. */
+int main(int argc, char* argv[])
+{
+    std::string allinput;
+
+    while (std::cin.good())     // read all input from cin
+    {
+        char inbuffer[32768];
+        std::cin.read(inbuffer, sizeof(inbuffer));
+        allinput.append(inbuffer, std::cin.gcount());
+    }
+
+    if (argc >= 2 && strcmp(argv[1], "-d") == 0)
+    {
+        std::string cstr = decompress_string( allinput );
+
+        std::cerr << "Inflated data: "
+                  << allinput.size() << " -> " << cstr.size()
+                  << " (" << std::setprecision(1) << std::fixed
+                  << ( ((float)cstr.size() / (float)allinput.size() - 1.0) * 100.0 )
+                  << "% increase).\n";
+
+        std::cout << cstr;
+    }
+    else
+    {
+        std::string cstr = compress_string( allinput );
+
+        std::cerr << "Deflated data: "
+                  << allinput.size() << " -> " << cstr.size()
+                  << " (" << std::setprecision(1) << std::fixed
+                  << ( (1.0 - (float)cstr.size() / (float)allinput.size()) * 100.0)
+                  << "% saved).\n";
+
+        std::cout << cstr;
+    }
+}

tests/pr134/hello_module/extensions/testzlib.h

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+#include <iostream>
+#include <zlib.h>
+
+#ifndef ZLIB_EXAMPLE // include guard
+#define ZLIB_EXAMPLE
+
+std::string compress_string(const std::string& str,
+                            int compressionlevel = Z_BEST_COMPRESSION);
+std::string decompress_string(const std::string& str);
+
+#endif /* ZLIB_EXAMPLE */

tests/pr134/hello_module/extensions/testzlib.sh

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+# compile and run
+g++ testzlib.cpp -lz -o testzlib
+if [ $? == 0 ]; then
+    echo Hello Hello Hello Hello Hello Hello! | ./testzlib | ./testzlib -d
+fi
+# Deflated data: 37 -> 19 (48.6% saved).
+# Inflated data: 19 -> 37 (94.7% increase).
+# Hello Hello Hello Hello Hello Hello!