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allow NULL string when length is zero in 'lua_pushlstring' and

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'luaL_addlstring'
This commit is contained in:
Roberto Ierusalimschy
2015-10-06 13:10:22 -03:00
parent 9294466234
commit 8949904783
2 changed files with 11 additions and 9 deletions
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10
lauxlib.c
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@@ -1,5 +1,5 @@
/*
** $Id: lauxlib.c,v 1.281 2015/06/18 14:23:14 roberto Exp roberto $
** $Id: lauxlib.c,v 1.282 2015/10/02 15:46:49 roberto Exp roberto $
** Auxiliary functions for building Lua libraries
** See Copyright Notice in lua.h
*/
@@ -512,9 +512,11 @@ LUALIB_API char *luaL_prepbuffsize (luaL_Buffer *B, size_t sz) {
LUALIB_API void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l) {
char *b = luaL_prepbuffsize(B, l);
memcpy(b, s, l * sizeof(char));
luaL_addsize(B, l);
if (l > 0) { /* avoid 'memcpy' when 's' can be NULL */
char *b = luaL_prepbuffsize(B, l);
memcpy(b, s, l * sizeof(char));
luaL_addsize(B, l);
}
}