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[fix](hash join) fix stack overflow caused by evaluate case expr on huge build block (#28851)

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This commit is contained in:
TengJianPing
2023-12-22 15:45:12 +08:00
committed by GitHub
parent cb61a0727f
commit d75300f166
9 changed files with 69 additions and 29 deletions
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30
be/src/vec/functions/function_string.cpp
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@ -582,6 +582,7 @@ public:
}
};
static constexpr int MAX_STACK_CIPHER_LEN = 1024 * 64;
struct UnHexImpl {
static constexpr auto name = "unhex";
using ReturnType = DataTypeString;
@ -654,8 +655,16 @@ struct UnHexImpl {
continue;
}
char dst_array[MAX_STACK_CIPHER_LEN];
char* dst = dst_array;
int cipher_len = srclen / 2;
char dst[cipher_len];
std::unique_ptr<char[]> dst_uptr;
if (cipher_len > MAX_STACK_CIPHER_LEN) {
dst_uptr.reset(new char[cipher_len]);
dst = dst_uptr.get();
}
int outlen = hex_decode(source, srclen, dst);
if (outlen < 0) {
@ -725,8 +734,16 @@ struct ToBase64Impl {
continue;
}
char dst_array[MAX_STACK_CIPHER_LEN];
char* dst = dst_array;
int cipher_len = (int)(4.0 * ceil((double)srclen / 3.0));
char dst[cipher_len];
std::unique_ptr<char[]> dst_uptr;
if (cipher_len > MAX_STACK_CIPHER_LEN) {
dst_uptr.reset(new char[cipher_len]);
dst = dst_uptr.get();
}
int outlen = base64_encode((const unsigned char*)source, srclen, (unsigned char*)dst);
if (outlen < 0) {
@ -765,8 +782,15 @@ struct FromBase64Impl {
continue;
}
char dst_array[MAX_STACK_CIPHER_LEN];
char* dst = dst_array;
int cipher_len = srclen;
char dst[cipher_len];
std::unique_ptr<char[]> dst_uptr;
if (cipher_len > MAX_STACK_CIPHER_LEN) {
dst_uptr.reset(new char[cipher_len]);
dst = dst_uptr.get();
}
int outlen = base64_decode(source, srclen, dst);
if (outlen < 0) {