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warning on importing undefined variables

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Alex Shinn 2009-12-13 19:29:35 +09:00
parent 178cf109bd
commit e03cef72b3
1 changed files with 11 additions and 2 deletions
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13
eval.c
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@ -2380,7 +2380,7 @@ static sexp sexp_make_standard_env (sexp ctx, sexp version) {
}
sexp sexp_env_copy (sexp ctx, sexp to, sexp from, sexp ls) {
sexp oldname, newname;
sexp oldname, newname, value, out;
if (! sexp_envp(to)) to = sexp_context_env(ctx);
if (! sexp_envp(from)) from = sexp_context_env(ctx);
if (sexp_not(ls)) {
@ -2393,7 +2393,16 @@ sexp sexp_env_copy (sexp ctx, sexp to, sexp from, sexp ls) {
} else {
newname = oldname = sexp_car(ls);
}
sexp_env_define(ctx, to, newname, sexp_env_global_ref(from, oldname, SEXP_FALSE));
value = sexp_env_global_ref(from, oldname, SEXP_UNDEF);
if (value != SEXP_UNDEF) {
sexp_env_define(ctx, to, newname, value);
#if USE_WARN_UNDEFS
} else if (sexp_oportp(out=sexp_current_error_port(ctx))) {
sexp_write_string(ctx, "WARNING: importing undefined variable: ", out);
sexp_write(ctx, oldname, out);
sexp_write_char(ctx, '\n', out);
#endif
}
}
}
return SEXP_VOID;