fix: many use before initialization bugs

1 files changed, 12 insertions, 0 deletions

diff --git a/sys/cmd/cc/cc.c b/sys/cmd/cc/cc.c
index da4c4ed..3246292 100644
--- a/sys/cmd/cc/cc.c
+++ b/sys/cmd/cc/cc.c
@@ -277,9 +277,21 @@ freelx(Lexer *lx)
 void
 initp(Parser *p)
 {
+    /* initialize temporary buffers */
+    memset(p->spstk, 0, sizeof(p->spstk));
+    memset(p->nmstk, 0, sizeof(p->nmstk));
+    memset(p->dtstk, 0, sizeof(p->dtstk));
+    memset(p->ptstk, 0, sizeof(p->ptstk));
+
     p->sp = p->spstk;
     p->nm = p->nmstk;
     p->dt = p->dtstk;
+    p->pt = p->ptstk;
+
+    /* initialize ast */
+    p->ast.cap   = 0;
+    p->ast.len   = 0;
+    p->ast.decls = nil;
 }
 
 error