1 files changed, 3 insertions, 0 deletions
diff --git a/libtcc.c b/libtcc.c
index 3ce7b29..331baf3 100644
--- a/libtcc.c
+++ b/libtcc.c
@@ -702,6 +702,7 @@ LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
 {
     TokenSym *ts;
     Sym *s;
+    (void) s1;  /* not used */
     ts = tok_alloc(sym, strlen(sym));
     s = define_find(ts->tok);
     /* undefine symbol by putting an invalid name */
@@ -1191,6 +1192,7 @@ LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val)
        So it is handled here as if it were in a DLL. */
     pe_putimport(s, 0, name, (uintptr_t)val);
 #else
+    (void) s;  /* not used */
     set_elf_sym(symtab_section, (uintptr_t)val, 0,
         ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
         SHN_ABS, name);
@@ -1984,6 +1986,7 @@ LIBTCCAPI void tcc_set_options(TCCState *s, const char *r)
 
 PUB_FUNC void tcc_print_stats(TCCState *s, unsigned total_time)
 {
+    (void) s;  /* not used */
     if (total_time < 1)
         total_time = 1;
     if (total_bytes < 1)