loadelf.c: Fix dlsym symbol conflict with system libraries on macOS #538
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On newer macOS versions (Darwin 25.x), dlsym(0, "history") returns libedit's history function instead of EusLisp's ___history function, causing a segmentation fault when loading modules. This change reverses the symbol lookup order to first try the ___ prefixed symbol name, avoiding conflicts with system library symbols.
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Wainting for #539 |
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Summary
Fix segmentation fault on newer macOS versions (Darwin 25.x / macOS 26).
Problem
On newer macOS,
dlsym(0, "history")returns libedit'shistoryfunction instead of EusLisp's___historyfunction. This causes a segmentation fault when loading modules during the build process (e.g., when compiling with eusgl).The issue occurs because:
dlopen(0, RTLD_LAZY|RTLD_GLOBAL)with-flat_namespacemakes all loaded library symbols visibledlsymfinds libedit'shistorybefore EusLisp's___historySolution
Reverse the symbol lookup order to first try the
___prefixed symbol name, then fall back to the raw name. This avoids conflicts with system library symbols.Testing
Tested on macOS with Darwin 25.2.0 - eusgl and irteusgl build and run successfully after this fix.