4 files changed, 8 insertions, 8 deletions
diff --git a/bootstrap/apichk.c b/bootstrap/apichk.c
index 12c20f7..c3180e2 100644
--- a/bootstrap/apichk.c
+++ b/bootstrap/apichk.c
@@ -248,9 +248,9 @@ static void feed_varlist(blake2s_state *state, const struct Var *vars,
 static void compute_api_hash(struct VersionDecl *ver)
 {
     blake2s_state state;
-    struct Type *t;
-    struct Func *f;
-    struct VarInVersion *v;
+    const struct Type *t;
+    const struct Func *f;
+    const struct VarInVersion *v;
 
     blake2s_init(&state, 32);
     feed_string(&state, "SLUL API definition to be hashed", 32);
diff --git a/bootstrap/funccall.c b/bootstrap/funccall.c
index 1302816..8a488c4 100644
--- a/bootstrap/funccall.c
+++ b/bootstrap/funccall.c
@@ -9,10 +9,10 @@
 #include "compiler.h"
 #include "semchk.h"
 
-static void check_args(struct ExprCall *call, struct Func *func)
+static void check_args(const struct ExprCall *call, const struct Func *func)
 {
-    struct CallArg *arg;
-    struct Var *param;
+    const struct CallArg *arg;
+    const struct Var *param;
 
     arg = call->args;
     param = func->params;
diff --git a/bootstrap/main.c b/bootstrap/main.c
index b2a5deb..2fe02bf 100644
--- a/bootstrap/main.c
+++ b/bootstrap/main.c
@@ -167,7 +167,7 @@ static void parse_core_interface(void)
 static void parse_dependency_interfaces(void)
 {
     char filename[50+5+1]; /* "<modulename>.slul\0" */
-    struct DependencyInfo *dep;
+    const struct DependencyInfo *dep;
 
     for (dep = dependencies_list; dep; dep = dep->next) {
         size_t namelen = dep->node.length;
diff --git a/bootstrap/typechk.c b/bootstrap/typechk.c
index bc886f0..d3becdf 100644
--- a/bootstrap/typechk.c
+++ b/bootstrap/typechk.c
@@ -31,7 +31,7 @@ struct IdMapEntry {
 };
 
 
-static int max_subexpr_id(struct Expr *expr)
+static int max_subexpr_id(const struct Expr *expr)
 {
     int max = -1;
     for (; expr != NULL; expr = expr->rpnnext) {