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Fixed staging buffers reallocating on every operation (bug 3820, r=fyren+fyren).

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This commit is contained in:
David Anderson 2010-07-02 18:16:50 -07:00
parent 7bc019547f
commit 4f2fc17a8f
1 changed files with 7 additions and 7 deletions
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14
sourcepawn/compiler/sc7.c
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@ -82,25 +82,25 @@ static char *stgpipe=NULL;
static int pipemax=0; /* current size of the stage pipe, a second staging buffer */
static int pipeidx=0;
#define CHECK_STGBUFFER(index) if ((int)(index)>=stgmax) grow_stgbuffer(&stgbuf, stgmax, (index)+1)
#define CHECK_STGPIPE(index) if ((int)(index)>=pipemax) grow_stgbuffer(&stgpipe, pipemax, (index)+1)
#define CHECK_STGBUFFER(index) if ((int)(index)>=stgmax) grow_stgbuffer(&stgbuf, &stgmax, (index)+1)
#define CHECK_STGPIPE(index) if ((int)(index)>=pipemax) grow_stgbuffer(&stgpipe, &pipemax, (index)+1)
static void grow_stgbuffer(char **buffer, int curmax, int requiredsize)
static void grow_stgbuffer(char **buffer, int *curmax, int requiredsize)
{
char *p;
int clear= (*buffer==NULL); /* if previously none, empty buffer explicitly */
assert(curmax<requiredsize);
assert(*curmax<requiredsize);
/* if the staging buffer (holding intermediate code for one line) grows
* over a few kBytes, there is probably a run-away expression
*/
if (requiredsize>sSTG_MAX)
error(102,"staging buffer"); /* staging buffer overflow (fatal error) */
curmax=requiredsize+sSTG_GROW;
*curmax=requiredsize+sSTG_GROW;
if (*buffer!=NULL)
p=(char *)realloc(*buffer,curmax*sizeof(char));
p=(char *)realloc(*buffer,*curmax*sizeof(char));
else
p=(char *)malloc(curmax*sizeof(char));
p=(char *)malloc(*curmax*sizeof(char));
if (p==NULL)
error(102,"staging buffer"); /* staging buffer overflow (fatal error) */
*buffer=p;