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Debugging compiler failure


By : Vinayak
Date : October 17 2020, 03:08 PM
will be helpful for those in need Does the program compile if you place the header file "Adafruit_MQTT.h" in the same directory as your main.cpp?
Using the quotes around the name of the header file makes the compiler look for the file in the same directory as the including file.
code :


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Debugging Signature Verification failure


By : Billy Adriano Hernnd
Date : March 29 2020, 07:55 AM
To fix this issue Turned out to be totally unrelated. DB procedure was corrupting the key value.

Perl: debugging interpreter failure?


By : smokingbarrel
Date : March 29 2020, 07:55 AM
this will help There is a relation between $input and $depth somewhere else in the code.

Debugging failure to hash on the SQL side


By : jaywang
Date : March 29 2020, 07:55 AM
it helps some times My personal bet is that when you run your query directly from SQL Server Management Studio and run following statement:
code :
DELETE FROM Users;
INSERT INTO Users (phone, password)
VALUES ('0526487612', HASHBYTES('SHA1', 'admin123'));
SELECT * FROM Users WHERE phone=@UName AND password=HASHBYTES('SHA1', @PWord);
EXEC sp_executesql N'SELECT * FROM Users WHERE phone=@p0 AND password=HASHBYTES(''SHA1'', @p1)'
    , N'@p0 NVARCHAR(100), @p1 NVARCHAR(100)'
    , @p0 = N'0526487612'
    , @p1 = N'admin123';
EXEC sp_executesql N'SELECT * FROM Users WHERE phone=@p0 AND password=HASHBYTES(''SHA1'', CAST(@p1 AS VARCHAR(30)))'
    , N'@p0 NVARCHAR(100), @p1 NVARCHAR(100)'
    , @p0 = N'0526487612'
    , @p1 = N'admin123';
SELECT HASHBYTES('SHA1', 'admin123') AS VarcharSHA1
    , HASHBYTES('SHA1', N'admin123') AS nVarcharSHA1;
VarcharSHA1                                 nVarcharSHA1
--------------------------------------------------------------------------------------
0xF865B53623B121FD34EE5426C792E5C33AF8C227  0xB7BC3A1B04D9E165C6762B0A1CDE5226DF5B6A6A
IF OBJECT_ID('Users', 'U') IS NOT NULL
    DROP TABLE Users;

CREATE TABLE Users
(
    [phone] VARCHAR(30)
    , [password] BINARY(20)
);

INSERT INTO Users ([phone], [password])
VALUES ('0526487612', HASHBYTES('SHA1', 'admin123'));

EXEC sp_executesql N'SELECT * FROM Users WHERE phone=@p0 AND password=HASHBYTES(''SHA1'', @p1)'
    , N'@p0 NVARCHAR(100), @p1 NVARCHAR(100)'
    , @p0 = N'0526487612'
    , @p1 = N'admin123';
-- Doesn't bring result back

EXEC sp_executesql N'SELECT * FROM Users WHERE phone=@p0 AND password=HASHBYTES(''SHA1'', CAST(@p1 AS VARCHAR(30)))'
    , N'@p0 NVARCHAR(100), @p1 NVARCHAR(100)'
    , @p0 = N'0526487612'
    , @p1 = N'admin123';
-- Brings results back

TRUNCATE TABLE Users;
INSERT INTO Users ([phone], [password])
VALUES ('0526487612', HASHBYTES('SHA1', N'admin123'));
                                  --    ^
                                  --    |
                                  -- Notice this

EXEC sp_executesql N'SELECT * FROM Users WHERE phone=@p0 AND password=HASHBYTES(''SHA1'', @p1)'
    , N'@p0 NVARCHAR(100), @p1 NVARCHAR(100)'
    , @p0 = N'0526487612'
    , @p1 = N'admin123';
-- Brings results back

EXEC sp_executesql N'SELECT * FROM Users WHERE phone=@p0 AND password=HASHBYTES(''SHA1'', CAST(@p1 AS VARCHAR(30)))'
    , N'@p0 NVARCHAR(100), @p1 NVARCHAR(100)'
    , @p0 = N'0526487612'
    , @p1 = N'admin123';
-- Doesn't bring result back
command = connection.CreateCommand();
command.CommandText = @"
  SELECT *
  FROM Users
  WHERE phone = @UName
    AND password = HASHBYTES('SHA1', @PWord)";

//Add parameters like that and it will pass in correct data type
command.Parameters.Add("@UName", SqlDbType.VarChar, 50).Value = username;
command.Parameters.Add("@PWord", SqlDbType.VarChar, 50).Value = password;

//command.Parameters.AddWithValue("@UName", username);
//command.Parameters.AddWithValue("@PWord", password);

reader = command.ExecuteReader();

if (reader.HasRows)
{
    // ...
}

debugging vxworks loadModule failure


By : user10581
Date : March 29 2020, 07:55 AM
like below fixes the issue FOUND IT. Apparently, it was a mistake in the data read from the flash.
What I can contribute is that 'loadModule()' from memDrv device is possible and working.

Debugging ingestion failure in Kusto


By : user3290053
Date : March 29 2020, 07:55 AM
wish helps you "(409) Conflict" error usually comes from writing to the Azure storage. In general, this error should be treated as a transient one. If it happens in the writing of the main part of the ingestion, it should be retried (****). In your case, it happens in writing the data of the non-transactional update policy - this write is not retried - the data enters the main table, but not the dependent table. In the case of a transactional update policy, the whole ingestion will be failed and then retried.
(****) There was a bug in treating such an error, it was treated as permanent for a short period for the main ingestion data. The bug should be fixed now.
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