Trying to match to a typedef value in a receive statement causes "bad node type 44" error message

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When I try to match a message in a receive statement I get a "bad node type 44" error message. This happens when the message's type is a typedef. The error message is rather cryptic and doesn't give much insight.

typedef t {
    int i
}
init {
    chan c = [1] of {t}
    t x;
    !(c ?? [eval(x)]) // <--- ERROR
}

Trying to match to a typedef value in a receive statement , When I try to match a message in a receive statement I get a "bad node type 44" error message. This happens when the message's type is a� The typedef is an advance feature in C language which allows us to create an alias or new name for an existing type or user defined type. The syntax of typedef is as follows: Syntax: typedef data_type new_name; typedef: It is a keyword. data_type: It is the name of any existing type or user defined type created using structure/union.

Apparently it's a bug, link to github issue: https://github.com/nimble-code/Spin/issues/17

Update: Bug is now fixed.

Update 2: Bug was actually partially fixed, there are still some edge cases where it's behaving weirdly.

Update 3: As far as I can tell bug looks fixed now. The only downside is that it seems that now there is a strict restriction on what you put in the receive args. They have to match exactly the types declared in the channel. No more partial matches or unrolling struct fields.

Type declarations and pattern matching, Here are two ways to define by pattern matching a function imply of type (bool * bool) -> bool If we accept physical equality between values, we get a system which is too weak, As with any kind of pattern matching, value declaration may not be exhaustive. Lining up the patterns makes these functions easy to read. ERROR: Value 3 on the SELECT clause does not match the data type of the corresponding column listed after the INSERT table name. ERROR: Value 4 on the SELECT clause does not match the data type of the corresponding column listed after the INSERT table name. I've checked and the types do match so if anyone can provide any pointers that would be

My guess is that this error is related to the restrictions that structured types have. One restriction is that they can't be handled as a unit, to assign or compare them one must do it one field at a time.

For example, if one writes: x == y, where x and y are variables of a typedef type, the following error is shown: Error: incomplete structure ref 'x' saw 'operator: =='

Under the hood, when trying to compare the channel's queue to match the eval something is triggered that indicates that the comparison can't be done and then raises the "bad node type" message.

typedef statement in C, The typedef is an advance feature in C language which allows us to create Try uncommenting the line 15 and compile the program you will get an *a); // print value of b printf("Value at p2 = %d\n", *p2); // print value of b return 0; } The reason for this is that C standards committee decided no choice is� The column names used in the INSERT statement must match those of the table definition and the supplied values must match in number and type the ones expected in the table definition. Versions: All versions of SQL Server

C Programming Course Notes, typedef struct Student { int nClasses; char name [ NAME_LEN + 1 ]; double gpa; } Individual structs are always passed by value, even if they contain arrays. which means the following would ( incorrectly ) try to access the thing pointed to by case the type of the pointer must match the type of the field being pointed to: Join Date 12-31-2011 Location Warrington, England MS-Off Ver Excel 2007 Posts 19,568

Data Types and Matching – OCaml, Well, it's useful when we start doing pattern matching on lists, which I'll talk if all possible types have been examined in a switch statement (you can use an If the constructor can be used to define a value, it's followed by the of type part, If you look at the definition for 'a list above, you may be able to see the reason for� It causes the method to end execution and it returns a value to the statement that called the method. True T/F: The return statement's expression must be of the same data type as the return type specified in the method header or compatible with it

Errors and Warnings Reference Guide: List of the armcc error and , In this example, the backslash causes the following quote " to be treated as a literal This error can occur when a character value described by a hex constant is too typedef struct { unsigned char size; char string[]; } FOO; Function declaration does not match the number of parameters in an earlier function prototype. I am trying to save a spark dataframe to a BigQuery table from an AWS EMR cluster. match to a typedef value in a receive statement causes “bad node type 44

Comments
  • Although the issue was because of bug in Spin, this answer still provides value because 1) works around the bug in the meantime and 2) shows that you can use part of the struct as the filter and that can be useful.
  • You should probably set this answer as the accepted one. The other post does not really answer the question so you may consider to either (i) incorporate its content in this answer with an edit or (ii) delete it altogether. Please take a look at the tour if you haven't already.
  • Ok, I'll mark it as accepted once the system lets me. I still have to wait a few hours.