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Clear whole tree to prevent uninitialized value

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This commit is contained in:
Martin Raiber
2022-02-27 20:08:22 +01:00
parent 8a7cf60c7a
commit 9eedb97176
1 changed files with 11 additions and 1 deletions
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12
miniz_tinfl.c
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@@ -173,6 +173,16 @@ extern "C" {
} \
MZ_MACRO_END
static void tinfl_clear_tree(tinfl_decompressor *r)
{
if (r->m_type == 0)
MZ_CLEAR_ARR(r->m_tree_0);
else if (r->m_type == 1)
MZ_CLEAR_ARR(r->m_tree_1);
else
MZ_CLEAR_ARR(r->m_tree_2);
}
tinfl_status tinfl_decompress(tinfl_decompressor *r, const mz_uint8 *pIn_buf_next, size_t *pIn_buf_size, mz_uint8 *pOut_buf_start, mz_uint8 *pOut_buf_next, size_t *pOut_buf_size, const mz_uint32 decomp_flags)
{
static const mz_uint16 s_length_base[31] = { 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0 };
@@ -325,7 +335,7 @@ tinfl_status tinfl_decompress(tinfl_decompressor *r, const mz_uint8 *pIn_buf_nex
pCode_size = pCode_sizes[r->m_type];
MZ_CLEAR_ARR(total_syms);
TINFL_MEMSET(pLookUp, 0, sizeof(r->m_look_up[0]));
TINFL_MEMSET(pTree, 0, r->m_table_sizes[r->m_type] * sizeof(pTree[0]) * 2);
tinfl_clear_tree(r);
for (i = 0; i < r->m_table_sizes[r->m_type]; ++i)
total_syms[pCode_size[i]]++;
used_syms = 0, total = 0;