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Change rb_darray_calloc_mul_add_without_gc to check for overflow

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This commit is contained in:
Peter Zhu 2024-12-24 17:50:51 -05:00
parent 99ff0224a5
commit 2e3b2d5eb2
Notes: git 2025-01-02 16:03:25 +00:00 
Merged: https://github.com/ruby/ruby/pull/12459
1 changed files with 2 additions and 3 deletions
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5
darray.h
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@ -163,12 +163,11 @@ rb_darray_free_without_gc(void *ary)
free(ary);
}
/* Internal function. Like rb_xcalloc_mul_add but does not trigger GC and does
* not check for overflow in arithmetic. */
/* Internal function. Like rb_xcalloc_mul_add but does not trigger GC. */
static inline void *
rb_darray_calloc_mul_add_without_gc(size_t x, size_t y, size_t z)
{
size_t size = (x * y) + z;
size_t size = rbimpl_size_add_or_raise(rbimpl_size_mul_or_raise(x, y), z);
void *ptr = calloc(1, size);
if (ptr == NULL) rb_bug("rb_darray_calloc_mul_add_without_gc: failed");