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msvcrt: Use size_t to store indexes in qsort. 

It also avoids potential overflow while computing median
position (found by Frédéric Delanoy).
This commit is contained in:
Piotr Caban 2014-06-17 12:48:40 +02:00 committed by Alexandre Julliard
parent 40067dd011
commit 8436b58ee7
1 changed files with 4 additions and 3 deletions
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7
dlls/msvcrt/misc.c
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@ -262,8 +262,9 @@ static void small_sort(void *base, MSVCRT_size_t nmemb, MSVCRT_size_t size,
static void quick_sort(void *base, MSVCRT_size_t nmemb, MSVCRT_size_t size,
int (CDECL *compar)(void *, const void *, const void *), void *context)
{
int stack_lo[8*sizeof(MSVCRT_size_t)], stack_hi[8*sizeof(MSVCRT_size_t)], stack_pos;
int beg, end, lo, hi, med;
MSVCRT_size_t stack_lo[8*sizeof(MSVCRT_size_t)], stack_hi[8*sizeof(MSVCRT_size_t)];
MSVCRT_size_t beg, end, lo, hi, med;
int stack_pos;
stack_pos = 0;
stack_lo[stack_pos] = 0;
@ -281,7 +282,7 @@ static void quick_sort(void *base, MSVCRT_size_t nmemb, MSVCRT_size_t size,
lo = beg;
hi = end;
med = (hi+lo+1)/2;
med = lo + (hi-lo+1)/2;
if(compar(context, X(lo), X(med)) > 0)
swap(X(lo), X(med), size);
if(compar(context, X(lo), X(hi)) > 0)