Added gcc option '-Wconversion'

No warnings for standard numerical types. Still pending alternative
numerical types.

1 files changed, 4 insertions, 4 deletions

diff --git a/lauxlib.c b/lauxlib.c
index 5aeec55f..b70b7ae6 100644
--- a/lauxlib.c
+++ b/lauxlib.c
@@ -539,7 +539,7 @@ static void newbox (lua_State *L) {
 static size_t newbuffsize (luaL_Buffer *B, size_t sz) {
   size_t newsize = (B->size / 2) * 3;  /* buffer size * 1.5 */
   if (l_unlikely(sz > MAX_SIZE - B->n - 1))
-    return luaL_error(B->L, "resulting string too large");
+    return cast_sizet(luaL_error(B->L, "resulting string too large"));
   if (newsize < B->n + sz + 1 || newsize > MAX_SIZE) {
     /* newsize was not big enough or too big */
     newsize = B->n + sz + 1;
@@ -725,7 +725,7 @@ LUALIB_API void luaL_unref (lua_State *L, int t, int ref) {
 */
 
 typedef struct LoadF {
-  int n;  /* number of pre-read characters */
+  unsigned n;  /* number of pre-read characters */
   FILE *f;  /* file being read */
   char buff[BUFSIZ];  /* area for reading file */
 } LoadF;
@@ -825,7 +825,7 @@ LUALIB_API int luaL_loadfilex (lua_State *L, const char *filename,
     }
   }
   if (c != EOF)
-    lf.buff[lf.n++] = c;  /* 'c' is the first character of the stream */
+    lf.buff[lf.n++] = cast_char(c);  /* 'c' is the first character */
   status = lua_load(L, getF, &lf, lua_tostring(L, -1), mode);
   readstatus = ferror(lf.f);
   errno = 0;  /* no useful error number until here */
@@ -1020,7 +1020,7 @@ LUALIB_API void luaL_addgsub (luaL_Buffer *b, const char *s,
   const char *wild;
   size_t l = strlen(p);
   while ((wild = strstr(s, p)) != NULL) {
-    luaL_addlstring(b, s, wild - s);  /* push prefix */
+    luaL_addlstring(b, s, ct_diff2sz(wild - s));  /* push prefix */
     luaL_addstring(b, r);  /* push replacement in place of pattern */
     s = wild + l;  /* continue after 'p' */
   }