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Long double needs a larger LUAL_BUFFERSIZE (because

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'string.format("%.99f", 1e4900)' can generate quite long strings),
but otherwise buffer can be 1~2K
This commit is contained in:
Roberto Ierusalimschy 2015-01-13 15:24:22 -02:00
parent 3509914916
commit 3f2e21f0ea
1 changed files with 10 additions and 3 deletions
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13
luaconf.h
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@ -1,5 +1,5 @@
/*
** $Id: luaconf.h,v 1.237 2014/12/26 14:44:44 roberto Exp roberto $
** $Id: luaconf.h,v 1.238 2014/12/29 13:27:55 roberto Exp roberto $
** Configuration file for Lua
** See Copyright Notice in lua.h
*/
@ -702,9 +702,16 @@
/*
@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
** CHANGE it if it uses too much C-stack space.
** CHANGE it if it uses too much C-stack space. (For long double,
** 'string.format("%.99f", 1e4932)' needs ~5030 bytes, so a
** smaller buffer would force a memory allocation for each call to
** 'string.format'.)
*/
#define LUAL_BUFFERSIZE ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer)))
#if defined(LUA_REAL_LONGDOUBLE)
#define LUAL_BUFFERSIZE 8192
#else
#define LUAL_BUFFERSIZE (256 * (int)sizeof(lua_Integer))
#endif
/* }================================================================== */