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another fix

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iceman1001 2019-04-17 14:39:47 +02:00
commit e0bd6b2019
1 changed files with 7 additions and 3 deletions
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10
client/tinycbor/open_memstream.c
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@ -65,11 +65,15 @@ static RetType write_to_buffer(void *cookie, const char *data, LenType len) {
if (newsize >= b->alloc) { // NB! one extra byte is needed to avoid buffer overflow at close_buffer if (newsize >= b->alloc) { // NB! one extra byte is needed to avoid buffer overflow at close_buffer
// make room // make room
size_t newalloc = newsize + newsize / 2 + 1; // give 50% more room size_t newalloc = newsize + newsize / 2 + 1; // give 50% more room
ptr = realloc(ptr, newalloc);
if (ptr == NULL) { char *tmp = realloc(ptr, newalloc);
if ( tmp == NULL ) {
free(ptr); free(ptr);
return -1; return -1;
) } else {
ptr = tmp;
}
b->alloc = newalloc; b->alloc = newalloc;
*b->ptr = ptr; *b->ptr = ptr;
} }