From 1a1b2f3d7f321dd6f28118c985986940b189c635 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Tue, 14 Mar 2017 09:40:44 -0300
Subject: added 'return' to calls to 'luaL_error' (to signal to the compiler
 that the function cannot continue past that call)

---
 loslib.c   | 8 +++++---
 lstrlib.c  | 8 ++++----
 lutf8lib.c | 4 ++--
 3 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/loslib.c b/loslib.c
index dd2bb378..62988d27 100644
--- a/loslib.c
+++ b/loslib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: loslib.c,v 1.64 2016/04/18 13:06:55 roberto Exp $
+** $Id: loslib.c,v 1.65 2016/07/18 17:58:58 roberto Exp roberto $
 ** Standard Operating System library
 ** See Copyright Notice in lua.h
 */
@@ -293,7 +293,8 @@ static int os_date (lua_State *L) {
   else
     stm = l_localtime(&t, &tmr);
   if (stm == NULL)  /* invalid date? */
-    luaL_error(L, "time result cannot be represented in this installation");
+    return luaL_error(L,
+                 "time result cannot be represented in this installation");
   if (strcmp(s, "*t") == 0) {
     lua_createtable(L, 0, 9);  /* 9 = number of fields */
     setallfields(L, stm);
@@ -340,7 +341,8 @@ static int os_time (lua_State *L) {
     setallfields(L, &ts);  /* update fields with normalized values */
   }
   if (t != (time_t)(l_timet)t || t == (time_t)(-1))
-    luaL_error(L, "time result cannot be represented in this installation");
+    return luaL_error(L,
+                  "time result cannot be represented in this installation");
   l_pushtime(L, t);
   return 1;
 }
diff --git a/lstrlib.c b/lstrlib.c
index 934b7db8..6ed2bdb8 100644
--- a/lstrlib.c
+++ b/lstrlib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lstrlib.c,v 1.253 2016/12/20 18:37:00 roberto Exp roberto $
+** $Id: lstrlib.c,v 1.254 2016/12/22 13:08:50 roberto Exp roberto $
 ** Standard library for string operations and pattern-matching
 ** See Copyright Notice in lua.h
 */
@@ -879,7 +879,7 @@ static int lua_number2strx (lua_State *L, char *buff, int sz,
       buff[i] = toupper(uchar(buff[i]));
   }
   else if (fmt[SIZELENMOD] != 'a')
-    luaL_error(L, "modifiers for format '%%a'/'%%A' not implemented");
+    return luaL_error(L, "modifiers for format '%%a'/'%%A' not implemented");
   return n;
 }
 
@@ -1199,8 +1199,8 @@ static int getnum (const char **fmt, int df) {
 static int getnumlimit (Header *h, const char **fmt, int df) {
   int sz = getnum(fmt, df);
   if (sz > MAXINTSIZE || sz <= 0)
-    luaL_error(h->L, "integral size (%d) out of limits [1,%d]",
-                     sz, MAXINTSIZE);
+    return luaL_error(h->L, "integral size (%d) out of limits [1,%d]",
+                            sz, MAXINTSIZE);
   return sz;
 }
 
diff --git a/lutf8lib.c b/lutf8lib.c
index 6db6fd37..57bd59e0 100644
--- a/lutf8lib.c
+++ b/lutf8lib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lutf8lib.c,v 1.15 2015/03/28 19:16:55 roberto Exp roberto $
+** $Id: lutf8lib.c,v 1.16 2016/12/22 13:08:50 roberto Exp roberto $
 ** Standard library for UTF-8 manipulation
 ** See Copyright Notice in lua.h
 */
@@ -171,7 +171,7 @@ static int byteoffset (lua_State *L) {
   }
   else {
     if (iscont(s + posi))
-      luaL_error(L, "initial position is a continuation byte");
+      return luaL_error(L, "initial position is a continuation byte");
     if (n < 0) {
        while (n < 0 && posi > 0) {  /* move back */
          do {  /* find beginning of previous character */
-- 
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