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bug: zio mixes a 255 as first char in a buffer with EOZ

This commit is contained in:
Roberto Ierusalimschy 2003-03-20 13:00:56 -03:00
parent 15dbb53461
commit b518d14071
3 changed files with 13 additions and 7 deletions
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5
bugs
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@ -329,3 +329,8 @@ Fri Feb 28 14:20:33 EST 2003
>> GC metamethod calls could mess C/Lua stack syncronization
(by Roberto; since 5.0b)
** lzio.h/zlio.c
Thu Mar 20 11:40:12 EST 2003
>> zio mixes a 255 as first char in a buffer with EOZ
(by lhf; since 5.0a)

6
lzio.c
View File

@ -1,5 +1,5 @@
/*
** $Id: lzio.c,v 1.22 2002/10/08 18:46:08 roberto Exp roberto $
** $Id: lzio.c,v 1.23 2002/12/04 17:38:31 roberto Exp roberto $
** a generic input stream interface
** See Copyright Notice in lua.h
*/
@ -22,7 +22,7 @@ int luaZ_fill (ZIO *z) {
if (buff == NULL || size == 0) return EOZ;
z->n = size - 1;
z->p = buff;
return *(z->p++);
return char2int(*(z->p++));
}
@ -33,7 +33,7 @@ int luaZ_lookahead (ZIO *z) {
z->n++;
z->p--;
}
return *z->p;
return char2int(*z->p);
}

9
lzio.h
View File

@ -1,5 +1,5 @@
/*
** $Id: lzio.h,v 1.13 2002/08/05 18:45:02 roberto Exp roberto $
** $Id: lzio.h,v 1.14 2002/10/08 18:46:08 roberto Exp roberto $
** Buffered streams
** See Copyright Notice in lua.h
*/
@ -15,9 +15,10 @@
typedef struct Zio ZIO;
#define zgetc(z) (((z)->n--)>0 ? \
cast(int, cast(unsigned char, *(z)->p++)) : \
luaZ_fill(z))
#define char2int(c) cast(int, cast(unsigned char, (c)))
#define zgetc(z) (((z)->n--)>0 ? char2int(*(z)->p++) : luaZ_fill(z))
#define zname(z) ((z)->name)