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FFI: Workaround for platform dlerror() returning NULL.

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Contributed by mcclure.
This commit is contained in:
Mike Pall 2019-12-08 19:25:45 +01:00
parent 44382e833a
commit 478bcfe52a
1 changed files with 2 additions and 1 deletions
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3
src/lj_clib.c
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@ -118,12 +118,13 @@ static void *clib_loadlib(lua_State *L, const char *name, int global)
RTLD_LAZY | (global?RTLD_GLOBAL:RTLD_LOCAL));
if (!h) {
const char *e, *err = dlerror();
if (*err == '/' && (e = strchr(err, ':')) &&
if (err && *err == '/' && (e = strchr(err, ':')) &&
(name = clib_resolve_lds(L, strdata(lj_str_new(L, err, e-err))))) {
h = dlopen(name, RTLD_LAZY | (global?RTLD_GLOBAL:RTLD_LOCAL));
if (h) return h;
err = dlerror();
}
if (!err) err = "dlopen failed";
lj_err_callermsg(L, err);
}
return h;