gh-112301: Update documentation for configure options (--disable-safety and --enable-slower-safety) (#122758)

nohlson · AA-Turner · web-flow · commit aab18f4d9255 · 2024-08-08T20:35:00.000+01:00
Co-authored-by: Adam Turner &lt;9087854+AA-Turner@users.noreply.github.com&gt;
diff --git a/Doc/using/configure.rst b/Doc/using/configure.rst
@@ -909,19 +909,32 @@ Security Options
 
 .. option:: --disable-safety
 
-   Disable compiler options that are recommended by `OpenSSF`_ for security reasons with no performance overhead.
+   Disable compiler options that are `recommended by OpenSSF`_ for security reasons with no performance overhead.
    If this option is not enabled, CPython will be built based on safety compiler options with no slow down.
+   When this option is enabled, CPython will not be built with the compiler options listed below.
 
-   .. _OpenSSF: https://openssf.org/
+   The following compiler options are disabled with :option:`!--disable-safety`:
+
+   * `-fstack-protector-strong`_: Enable run-time checks for stack-based buffer overflows.
+   * `-Wtrampolines`_: Enable warnings about trampolines that require executable stacks.
+
+   .. _recommended by OpenSSF: https://github.com/ossf/wg-best-practices-os-developers/blob/main/docs/Compiler-Hardening-Guides/Compiler-Options-Hardening-Guide-for-C-and-C++.md
+   .. _-fstack-protector-strong: https://github.com/ossf/wg-best-practices-os-developers/blob/main/docs/Compiler-Hardening-Guides/Compiler-Options-Hardening-Guide-for-C-and-C++.md#enable-run-time-checks-for-stack-based-buffer-overflows
+   .. _-Wtrampolines: https://github.com/ossf/wg-best-practices-os-developers/blob/main/docs/Compiler-Hardening-Guides/Compiler-Options-Hardening-Guide-for-C-and-C++.md#enable-warning-about-trampolines-that-require-executable-stacks
 
    .. versionadded:: 3.14
 
 .. option:: --enable-slower-safety
 
-   Enable compiler options that are recommended by `OpenSSF`_ for security reasons which require overhead.
+   Enable compiler options that are `recommended by OpenSSF`_ for security reasons which require overhead.
    If this option is not enabled, CPython will not be built based on safety compiler options which performance impact.
+   When this option is enabled, CPython will be built with the compiler options listed below.
+
+   The following compiler options are enabled with :option:`!--enable-slower-safety`:
+
+   * `-D_FORTIFY_SOURCE=3`_: Fortify sources with compile- and run-time checks for unsafe libc usage and buffer overflows.
 
-   .. _OpenSSF: https://openssf.org/
+   .. _-D_FORTIFY_SOURCE=3: https://github.com/ossf/wg-best-practices-os-developers/blob/main/docs/Compiler-Hardening-Guides/Compiler-Options-Hardening-Guide-for-C-and-C++.md#fortify-sources-for-unsafe-libc-usage-and-buffer-overflows
 
    .. versionadded:: 3.14
 
