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Catching case when bytecode source is NULL.

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This commit is contained in:
Alex Shinn 2012-07-08 12:27:07 +09:00
parent 3e79138e21
commit 87fc698e6e
1 changed files with 1 additions and 1 deletions
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2
vm.c
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@ -29,7 +29,7 @@ static void sexp_print_stack (sexp ctx, sexp *stack, int top, int fp, sexp out)
#if SEXP_USE_FULL_SOURCE_INFO
static sexp sexp_lookup_source_info (sexp src, int ip) {
int i;
if (sexp_vectorp(src) && sexp_vector_length(src) > 0) {
if (src && sexp_vectorp(src) && sexp_vector_length(src) > 0) {
for (i=1; i<sexp_vector_length(src); i++)
if (sexp_unbox_fixnum(sexp_car(sexp_vector_ref(src, sexp_make_fixnum(i)))) > ip)
return sexp_cdr(sexp_vector_ref(src, sexp_make_fixnum(i-1)));