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| author | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2009-07-08 13:06:51 -0300 |
|---|---|---|
| committer | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2009-07-08 13:06:51 -0300 |
| commit | abb85fc059a5d6427b9dc36edee1619f2c7a1da8 (patch) | |
| tree | 0fd1add469b7e2f36e04bc634ffe21bf30dfc84e /ldo.h | |
| parent | aabe3ddbf4514b6c80258e731fbe90e74edcdc94 (diff) | |
| download | lua-abb85fc059a5d6427b9dc36edee1619f2c7a1da8.tar.gz lua-abb85fc059a5d6427b9dc36edee1619f2c7a1da8.tar.bz2 lua-abb85fc059a5d6427b9dc36edee1619f2c7a1da8.zip | |
new definition for 'luaD_checkstack' to avoid possible overflows
Diffstat (limited to 'ldo.h')
| -rw-r--r-- | ldo.h | 7 |
1 files changed, 3 insertions, 4 deletions
| @@ -1,5 +1,5 @@ | |||
| 1 | /* | 1 | /* |
| 2 | ** $Id: ldo.h,v 2.12 2009/04/17 14:28:06 roberto Exp roberto $ | 2 | ** $Id: ldo.h,v 2.13 2009/06/08 19:35:59 roberto Exp roberto $ |
| 3 | ** Stack and Call structure of Lua | 3 | ** Stack and Call structure of Lua |
| 4 | ** See Copyright Notice in lua.h | 4 | ** See Copyright Notice in lua.h |
| 5 | */ | 5 | */ |
| @@ -13,9 +13,8 @@ | |||
| 13 | #include "lzio.h" | 13 | #include "lzio.h" |
| 14 | 14 | ||
| 15 | 15 | ||
| 16 | #define luaD_checkstack(L,n) \ | 16 | #define luaD_checkstack(L,n) if (L->stack_last - L->top <= (n)) \ |
| 17 | if ((char *)L->stack_last - (char *)L->top <= (n)*(int)sizeof(TValue)) \ | 17 | luaD_growstack(L, n); else condmovestack(L); |
| 18 | luaD_growstack(L, n); else condmovestack(L); | ||
| 19 | 18 | ||
| 20 | 19 | ||
| 21 | #define incr_top(L) {L->top++; luaD_checkstack(L,0);} | 20 | #define incr_top(L) {L->top++; luaD_checkstack(L,0);} |