crypto/evp/bio_enc.c:161: error: INTEGER_OVERFLOW_L1
  (0 - [1, +oo]):unsigned64 by call to `EVP_CipherUpdate`.
Showing all 11 steps of the trace


crypto/evp/bio_enc.c:145:13: Call
143.            * read in at IV offset, read the EVP_Cipher documentation about why
144.            */
145.           i = BIO_read(next, &(ctx->buf[BUF_OFFSET]), ENC_BLOCK_SIZE);
                   ^
146.   
147.           if (i <= 0) {

crypto/bio/bio_lib.c:200:9: Assignment
  198.       if ((b == NULL) || (b->method == NULL) || (b->method->bread == NULL)) {
  199.           BIOerr(BIO_F_BIO_READ, BIO_R_UNSUPPORTED_METHOD);
  200.           return (-2);
                 ^
  201.       }
  202.   

crypto/evp/bio_enc.c:145:9: Assignment
143.            * read in at IV offset, read the EVP_Cipher documentation about why
144.            */
145.           i = BIO_read(next, &(ctx->buf[BUF_OFFSET]), ENC_BLOCK_SIZE);
               ^
146.   
147.           if (i <= 0) {

crypto/evp/bio_enc.c:161:18: Call
159.               }
160.           } else {
161.               if (!EVP_CipherUpdate(ctx->cipher,
                        ^
162.                                     (unsigned char *)ctx->buf, &ctx->buf_len,
163.                                     (unsigned char *)&(ctx->buf[BUF_OFFSET]),

crypto/evp/evp_enc.c:205:1: Parameter `inl`
  203.   }
  204.   
  205. > int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
  206.                        const unsigned char *in, int inl)
  207.   {

crypto/evp/evp_enc.c:209:16: Call
  207.   {
  208.       if (ctx->encrypt)
  209.           return EVP_EncryptUpdate(ctx, out, outl, in, inl);
                        ^
  210.       else
  211.           return EVP_DecryptUpdate(ctx, out, outl, in, inl);

crypto/evp/evp_enc.c:294:1: Parameter `inl`
    292.   }
    293.   
    294. > int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
    295.                         const unsigned char *in, int inl)
    296.   {

crypto/evp/evp_enc.c:300:13: Call
    298.   
    299.       if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
    300.           if (is_partially_overlapping(out, in, inl))
                       ^
    301.               return 0;
    302.   

crypto/evp/evp_enc.c:279:1: <RHS trace>
277.   #endif
278.   
279. > static int is_partially_overlapping(const void *ptr1, const void *ptr2,
280.                                       int len)
281.   {

crypto/evp/evp_enc.c:279:1: Parameter `len`
      277.   #endif
      278.   
      279. > static int is_partially_overlapping(const void *ptr1, const void *ptr2,
      280.                                       int len)
      281.   {

crypto/evp/evp_enc.c:289:49: Binary operation: (0 - [1, +oo]):unsigned64 by call to `EVP_CipherUpdate` 
      287.        */
      288.       int condition = (len > 0) & (diff != 0) & ((diff < (PTRDIFF_T)len) |
      289.                                                  (diff > (0 - (PTRDIFF_T)len)));
                                                             ^
      290.       assert(!condition);
      291.       return condition;

static int is_partially_overlapping(const void *ptr1, const void *ptr2,
                                    int len)
{
    PTRDIFF_T diff = (PTRDIFF_T)ptr1-(PTRDIFF_T)ptr2;
    int condition = (len > 0) & (diff != 0) & ((diff < (PTRDIFF_T)len) |
                                               (diff > (0 - (PTRDIFF_T)len)));
    assert(!condition);
    return condition;
}
['static int enc_read(BIO *b, char *out, int outl)\n{\n    int ret = 0, i;\n    BIO_ENC_CTX *ctx;\n    BIO *next;\n    if (out == NULL)\n        return (0);\n    ctx = BIO_get_data(b);\n    next = BIO_next(b);\n    if ((ctx == NULL) || (next == NULL))\n        return 0;\n    if (ctx->buf_len > 0) {\n        i = ctx->buf_len - ctx->buf_off;\n        if (i > outl)\n            i = outl;\n        memcpy(out, &(ctx->buf[ctx->buf_off]), i);\n        ret = i;\n        out += i;\n        outl -= i;\n        ctx->buf_off += i;\n        if (ctx->buf_len == ctx->buf_off) {\n            ctx->buf_len = 0;\n            ctx->buf_off = 0;\n        }\n    }\n    while (outl > 0) {\n        if (ctx->cont <= 0)\n            break;\n        i = BIO_read(next, &(ctx->buf[BUF_OFFSET]), ENC_BLOCK_SIZE);\n        if (i <= 0) {\n            if (!BIO_should_retry(next)) {\n                ctx->cont = i;\n                i = EVP_CipherFinal_ex(ctx->cipher,\n                                       (unsigned char *)ctx->buf,\n                                       &(ctx->buf_len));\n                ctx->ok = i;\n                ctx->buf_off = 0;\n            } else {\n                ret = (ret == 0) ? i : ret;\n                break;\n            }\n        } else {\n            if (!EVP_CipherUpdate(ctx->cipher,\n                                  (unsigned char *)ctx->buf, &ctx->buf_len,\n                                  (unsigned char *)&(ctx->buf[BUF_OFFSET]),\n                                  i)) {\n                BIO_clear_retry_flags(b);\n                return 0;\n            }\n            ctx->cont = 1;\n            if (ctx->buf_len == 0)\n                continue;\n        }\n        if (ctx->buf_len <= outl)\n            i = ctx->buf_len;\n        else\n            i = outl;\n        if (i <= 0)\n            break;\n        memcpy(out, ctx->buf, i);\n        ret += i;\n        ctx->buf_off = i;\n        outl -= i;\n        out += i;\n    }\n    BIO_clear_retry_flags(b);\n    BIO_copy_next_retry(b);\n    return ((ret == 0) ? ctx->cont : ret);\n}', 'int BIO_read(BIO *b, void *out, int outl)\n{\n    int i;\n    long (*cb) (BIO *, int, const char *, int, long, long);\n    if ((b == NULL) || (b->method == NULL) || (b->method->bread == NULL)) {\n        BIOerr(BIO_F_BIO_READ, BIO_R_UNSUPPORTED_METHOD);\n        return (-2);\n    }\n    cb = b->callback;\n    if ((cb != NULL) &&\n        ((i = (int)cb(b, BIO_CB_READ, out, outl, 0L, 1L)) <= 0))\n        return (i);\n    if (!b->init) {\n        BIOerr(BIO_F_BIO_READ, BIO_R_UNINITIALIZED);\n        return (-2);\n    }\n    i = b->method->bread(b, out, outl);\n    if (i > 0)\n        b->num_read += (uint64_t)i;\n    if (cb != NULL)\n        i = (int)cb(b, BIO_CB_READ | BIO_CB_RETURN, out, outl, 0L, (long)i);\n    return (i);\n}', 'int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,\n                     const unsigned char *in, int inl)\n{\n    if (ctx->encrypt)\n        return EVP_EncryptUpdate(ctx, out, outl, in, inl);\n    else\n        return EVP_DecryptUpdate(ctx, out, outl, in, inl);\n}', 'int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,\n                      const unsigned char *in, int inl)\n{\n    int i, j, bl;\n    if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {\n        if (is_partially_overlapping(out, in, inl))\n            return 0;\n        i = ctx->cipher->do_cipher(ctx, out, in, inl);\n        if (i < 0)\n            return 0;\n        else\n            *outl = i;\n        return 1;\n    }\n    if (inl <= 0) {\n        *outl = 0;\n        return inl == 0;\n    }\n    if (is_partially_overlapping(out, in, inl))\n        return 0;\n    if (ctx->buf_len == 0 && (inl & (ctx->block_mask)) == 0) {\n        if (ctx->cipher->do_cipher(ctx, out, in, inl)) {\n            *outl = inl;\n            return 1;\n        } else {\n            *outl = 0;\n            return 0;\n        }\n    }\n    i = ctx->buf_len;\n    bl = ctx->cipher->block_size;\n    OPENSSL_assert(bl <= (int)sizeof(ctx->buf));\n    if (i != 0) {\n        if (bl - i > inl) {\n            memcpy(&(ctx->buf[i]), in, inl);\n            ctx->buf_len += inl;\n            *outl = 0;\n            return 1;\n        } else {\n            j = bl - i;\n            memcpy(&(ctx->buf[i]), in, j);\n            inl -= j;\n            in += j;\n            if (is_partially_overlapping(out, in, bl))\n                return 0;\n            if (!ctx->cipher->do_cipher(ctx, out, ctx->buf, bl))\n                return 0;\n            out += bl;\n            *outl = bl;\n        }\n    } else\n        *outl = 0;\n    i = inl & (bl - 1);\n    inl -= i;\n    if (inl > 0) {\n        if (!ctx->cipher->do_cipher(ctx, out, in, inl))\n            return 0;\n        *outl += inl;\n    }\n    if (i != 0)\n        memcpy(ctx->buf, &(in[inl]), i);\n    ctx->buf_len = i;\n    return 1;\n}', 'static int is_partially_overlapping(const void *ptr1, const void *ptr2,\n                                    int len)\n{\n    PTRDIFF_T diff = (PTRDIFF_T)ptr1-(PTRDIFF_T)ptr2;\n    int condition = (len > 0) & (diff != 0) & ((diff < (PTRDIFF_T)len) |\n                                               (diff > (0 - (PTRDIFF_T)len)));\n    assert(!condition);\n    return condition;\n}']