GCC Technique Enables Indirect Calls to Nested Functions Without Executable Stack

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A technical article published on August 29, 2026, explores a method for indirectly calling nested functions in GCC without requiring an executable stack. Nested functions in GCC traditionally rely on trampoline code stored on the stack, which demands executable stack permissions and poses security risks. The article outlines an alternative approach that avoids this dependency, potentially improving security in programs using nested functions. The post appeared on Hacker News, attracting minimal engagement at the time of indexing with only 5 points and no comments.

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