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refactor: avoid overflow by explicitly casting operand to a wider type

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Dundar Göc
2021-12-31 14:22:35 +01:00
parent 991e872d80
commit db7fe34017
4 changed files with 8 additions and 9 deletions
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6
src/nvim/memfile.c
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@@ -247,7 +247,7 @@ bhdr_T *mf_new(memfile_T *mfp, bool negative, unsigned page_count)
} else { // need to allocate memory for this block
// If the number of pages matches use the bhdr_T from the free list and
// allocate the data.
void *p = xmalloc(mfp->mf_page_size * page_count);
void *p = xmalloc((size_t)mfp->mf_page_size * page_count);
hp = mf_rem_free(mfp);
hp->bh_data = p;
}
@@ -269,7 +269,7 @@ bhdr_T *mf_new(memfile_T *mfp, bool negative, unsigned page_count)
// Init the data to all zero, to avoid reading uninitialized data.
// This also avoids that the passwd file ends up in the swap file!
(void)memset(hp->bh_data, 0, mfp->mf_page_size * page_count);
(void)memset(hp->bh_data, 0, (unsigned long)mfp->mf_page_size * page_count);
return hp;
}
@@ -528,7 +528,7 @@ bool mf_release_all(void)
static bhdr_T *mf_alloc_bhdr(memfile_T *mfp, unsigned page_count)
{
bhdr_T *hp = xmalloc(sizeof(bhdr_T));
hp->bh_data = xmalloc(mfp->mf_page_size * page_count);
hp->bh_data = xmalloc((size_t)mfp->mf_page_size * page_count);
hp->bh_page_count = page_count;
return hp;
}