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fixing segfault when applying a first-class opcode to the wrong # of arguments

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Alex Shinn 2009-12-13 16:59:20 +09:00
parent d6e279eccd
commit 178cf109bd
1 changed files with 7 additions and 2 deletions
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9
eval.c
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@ -1141,8 +1141,13 @@ static sexp make_param_list (sexp ctx, sexp_uint_t i) {
static sexp make_opcode_procedure (sexp ctx, sexp op, sexp_uint_t i) {
sexp ls, bc, res, env;
sexp_gc_var5(params, ref, refs, lambda, ctx2);
if (i == sexp_opcode_num_args(op) && sexp_opcode_proc(op))
return sexp_opcode_proc(op); /* return before preserving */
if (i == sexp_opcode_num_args(op)) { /* return before preserving */
if (sexp_opcode_proc(op)) return sexp_opcode_proc(op);
} else if (i < sexp_opcode_num_args(op)) {
return sexp_compile_error(ctx, "not enough args for opcode", op);
} else if (! sexp_opcode_variadic_p(op)) { /* i > num_args */
return sexp_compile_error(ctx, "too many args for opcode", op);
}
sexp_gc_preserve5(ctx, params, ref, refs, lambda, ctx2);
params = make_param_list(ctx, i);
lambda = sexp_make_lambda(ctx, params);