fix --no-gen-gc configuration.

This fixes only the build. I'm getting a crash in
one test case, namely tests/010/json.tl.

* lib.h (mut): Remove stray semicolon from definition.
This semicolon compensates for the lack of a semicolon
in txr.c, which becomes a syntax errror under no-gen-gc,
when the other definition of mut is active.
(mkloc, setcheck): Let's add casts of the object argument
to void.  This gets rid of a number of unused parameter
errors in various functions that take an object parameter
that is only used in the case of generational GC.

* txr.c (txr_main): Add missing semicolon after mut call.

* gc.c (gc_wrap): In the no CONFIG_GEN_GC case, cast
argument full to void, since it is unused.

3 files changed, 6 insertions, 4 deletions

diff --git a/gc.c b/gc.c
index 02a0cb9c..25b4c071 100644
--- a/gc.c
+++ b/gc.c
@@ -1053,6 +1053,8 @@ static val gc_wrap(val full)
 #if CONFIG_GEN_GC
     if (!null_or_missing_p(full))
       full_gc = 1;
+#else
+    (void) full;
 #endif
     gc();
     return t;
diff --git a/lib.h b/lib.h
index 8aa23a3f..f3cd8429 100644
--- a/lib.h
+++ b/lib.h
@@ -411,18 +411,18 @@ INLINE loc mkloc_fun(val *ptr, val obj)
 #define valptr(lo) ((lo).ptr)
 #define set(lo, val) (gc_set(lo, val))
 #define setcheck(tgt, src) (gc_assign_check(tgt, src))
-#define mut(obj) (gc_mutated(obj));
+#define mut(obj) (gc_mutated(obj))
 #define mpush(val, lo) (gc_push(val, lo))
 #else
 typedef val *loc;
-#define mkloc(expr, obj) (&(expr))
+#define mkloc(expr, obj) ((void) (obj), &(expr))
 #define mkcloc(expr) (&(expr))
 #define nulloc ((loc) 0)
 #define nullocp(lo) (!(lo))
 #define deref(lo) (*(lo))
 #define valptr(lo) (lo)
 #define set(lo, val) (*(lo) = (val))
-#define setcheck(tgt, src) ((void) 0)
+#define setcheck(tgt, src) ((void) (tgt))
 #define mut(obj) ((void) (obj))
 #define mpush(val, lo) (push(val, lo))
 #endif
diff --git a/txr.c b/txr.c
index 5a4f3b77..90036983 100644
--- a/txr.c
+++ b/txr.c
@@ -1208,7 +1208,7 @@ int txr_main(int argc, char **argv)
     val parser_obj = ensure_parser(parse_stream, spec_file_str);
     parser_t *parser = parser_get_impl(prog_string, parser_obj);
     parse_once_noerr(parse_stream, spec_file_str);
-    mut(parser_obj)
+    mut(parser_obj);
     gc_state(gc);
 
     close_stream(parse_stream, nil);