Make the base-address project option obsolete - #1823
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* sources/project-manager/tools-interface/project-files.dylan (<project-information>): Remove the project-information-base-address slot definition. (write-project-to-stream): Do not write the project base address when saving a project. (read-project-from-stream): Do not interpret the base-address: keyword from project sources.
Previously the project-manager would attempt to compute a base address that would allow Windows to load the full set of DLLs in a project without relocations. However, current versions of Windows (starting with Windows Vista and Windows Server 2008) implement Address Space Layout Randomization for improved security, so that the link-time base addresses are no longer meaningful. * sources/project-manager/user-projects/save-project.dylan (save-lid-info): Do not compute a default base address when saving. ($top-for-user-libraries, $allowance-for-user-libraries, library-base, compute-base-address): Remove.
The DLL base address is no longer a useful project setting, so it can be removed from the IDE project link settings page. * sources/environment/tools/project-settings.dylan (<link-settings-page>): Remove %base-address slot. Remove %base-address-pane pane definition. Remove Base address grouping from layout. (<project-settings-dialog>): Remove base-address initializer from the <link-settings-page> construction. (update-project-settings): Remove update of project-base-address from the <link-settings-page>. (valid-project-settings?): Remove validation of the <link-settings-page> base-address.
* sources/.../*.lid: Remove the Base-Address: keyword. * sources/.../*.hdp: Remove the Base-Address: keyword.
* documentation/source/getting-started-ide/projects.rst: Remove mentions of the DLL base-address from the IDE documentation on working with projects. Improve markup usage.
cgay
reviewed
Jun 26, 2026
* documentation/source/library-reference/lid.rst: Explain how the base-address: keyword is no longer useful.
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Since Windows Vista and Windows Server 2008, DLLs are loaded at random addresses as part of Address Space Layout Randomization. Windows XP, the last version that respected DLL base addresses specified in the DLL executable, ended support in April 2014. It is no longer desirable to specify base addresses for Dylan library projects.