Code size stored in code itself

Most patterns do not have code, as they are not directly used for
a match; they are created only to compose larger patterns. So, we
shouldn't waste space to store the size of their code, as a NULL
pointer already indicates that the size is zero.

1 files changed, 2 insertions, 1 deletions

diff --git a/lpprint.c b/lpprint.c
index 3e7e7f2..54a3da7 100644
--- a/lpprint.c
+++ b/lpprint.c
@@ -137,8 +137,9 @@ void printinst (const Instruction *op, const Instruction *p) {
 }
 
 
-void printpatt (Instruction *p, int n) {
+void printpatt (Instruction *p) {
   Instruction *op = p;
+  uint n = op[-1].codesize - 1;
   while (p < op + n) {
     printinst(op, p);
     p += sizei(p);