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generate_drop_prev shouldn't apply its optimization to arbitrary opcodes

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returning void since some may be mutating.
This commit is contained in:
Alex Shinn 2014-08-12 21:32:38 +09:00
parent a2ca973c4f
commit 72ce309918
1 changed files with 1 additions and 3 deletions
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4
vm.c
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@ -165,9 +165,7 @@ static void generate_lit (sexp ctx, sexp value) {
static void generate_drop_prev (sexp ctx, sexp prev) {
#if ! SEXP_USE_ALIGNED_BYTECODE
if ((sexp_pairp(prev) && sexp_opcodep(sexp_car(prev))
&& ((sexp_opcode_return_type(sexp_car(prev)) == SEXP_VOID
&& sexp_opcode_class(sexp_car(prev)) != SEXP_OPC_FOREIGN)
|| (sexp_opcode_code(sexp_car(prev)) == SEXP_OP_PUSH)))
&& (sexp_opcode_code(sexp_car(prev)) == SEXP_OP_PUSH))
|| sexp_setp(prev) || sexp_litp(prev) || prev == SEXP_VOID)
sexp_inc_context_pos(ctx, -(1 + sizeof(sexp)));
else