21 lines
650 B
Diff
21 lines
650 B
Diff
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--- lua-5.1.4.orig/src/lstrlib.c 2008/07/11 17:27:21 1.132.1.4
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+++ lua-5.1.4/src/lstrlib.c 2010/05/14 15:12:53
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@@ -754,6 +754,7 @@
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static int str_format (lua_State *L) {
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+ int top = lua_gettop(L);
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int arg = 1;
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size_t sfl;
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const char *strfrmt = luaL_checklstring(L, arg, &sfl);
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@@ -768,7 +769,8 @@
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else { /* format item */
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char form[MAX_FORMAT]; /* to store the format (`%...') */
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char buff[MAX_ITEM]; /* to store the formatted item */
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- arg++;
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+ if (++arg > top)
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+ luaL_argerror(L, arg, "no value");
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strfrmt = scanformat(L, strfrmt, form);
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switch (*strfrmt++) {
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case 'c': {
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