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gmodule-dl: fix G_MODULE_BIND_LOCAL on Darwin

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According to POSIX, the default behavior of `dlopen` is unspecified when
its flags include neither `RTLD_LOCAL` nor `RTLD_GLOBAL`. Consequently,
different platforms have different default behavior.

The default on Linux is `RTLD_LOCAL`, but the default on Darwin is
`RTLD_GLOBAL`. By passing `0` to `dlopen`, this results in the opposite
of the caller's intent when using `G_MODULE_BIND_LOCAL`.

Passing `RTLD_LOCAL` for `G_MODULE_BIND_LOCAL` allows the correct
behavior to be observed regardless of the platform's default.
This commit is contained in:
Randy Eckenrode
2024-07-10 18:27:53 -04:00
parent 4a73fbda8b
commit 73d913519d
2 changed files with 33 additions and 1 deletions
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2
gmodule/gmodule-dl.c
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@@ -136,7 +136,7 @@ _g_module_open (const gchar *file_name,
lock_dlerror ();
handle = dlopen (file_name,
(bind_local ? 0 : RTLD_GLOBAL) | (bind_lazy ? RTLD_LAZY : RTLD_NOW));
(bind_local ? RTLD_LOCAL : RTLD_GLOBAL) | (bind_lazy ? RTLD_LAZY : RTLD_NOW));
if (!handle)
{
const gchar *message = fetch_dlerror (TRUE);