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error C2678

Scheduled Pinned Locked Moved C / C++ / MFC
linuxregexhelplearning
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  • V Victor Nijegorodov

    Try to declare both flags and flag as int

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    _Flaviu
    wrote on last edited by
    #14

    Yes, but FILE_FLAGS is enum with int values ...

    V 1 Reply Last reply
    0
    • _ _Flaviu

      Yes, but FILE_FLAGS is enum with int values ...

      V Offline
      V Offline
      Victor Nijegorodov
      wrote on last edited by
      #15

      Then, as Richard already suggested replace this enum with a set of #define.

      _ 1 Reply Last reply
      0
      • V Victor Nijegorodov

        Then, as Richard already suggested replace this enum with a set of #define.

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        _Flaviu
        wrote on last edited by
        #16

        Agree, but that enum is a part of another struct ... so, how can I put as part of a struct several #defines ?

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        • _ _Flaviu

          I am afraid that I cannot change that enum into #defines, because I have:

          na->flags |= flag;

          where

          FILE_FLAGS flag;

          and na is struct level1, and inside this level1 struct, I have

          struct level1
          {
          FILE_FLAGS flags;
          ....
          };

          I have entered in some deadlock ? Please help me to solve this error ...

          L Offline
          L Offline
          Lost User
          wrote on last edited by
          #17

          Of course you can change it to #defines. The definition of FILE_FLAGS then becomes an int type. And then the rest of the code should compile correctly.

          _ 1 Reply Last reply
          0
          • L Lost User

            Of course you can change it to #defines. The definition of FILE_FLAGS then becomes an int type. And then the rest of the code should compile correctly.

            _ Offline
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            _Flaviu
            wrote on last edited by
            #18

            I am not get something, so forgive me. I have moved those enum values as #defines, but of course, now I get error from struct: doesn't know who is FILE_FLAGS flags; from level1 struct.

            /*
            typedef enum {
            FILE_READONLY = 0x00000001,
            FILE_HIDDEN = 0x00000002,
            FILE_SYSTEM = 0x00000004,

            FILE\_DIRECTORY = 0x00000010,
            FILE\_ARCHIVE = 0x00000020,
            FILE\_DEVICE = 0x00000040,
            FILE\_NORMAL = 0x00000080,
            
            FILE\_TEMPORARY = 0x00000100,
            

            ....
            .....

            }FILE_FLAGS;
            */

            #define FILE_READONLY = 0x00000001
            #define FILE_HIDDEN = 0x00000002
            #define FILE_SYSTEM = 0x00000004

            of course, FILE_FLAGS enum has disappeared ... obviously, I don't understood something ... but what ?

            struct level1
            {
            FILE_FLAGS flags; // <-- error
            ....
            };

            V L 2 Replies Last reply
            0
            • _ _Flaviu

              I am not get something, so forgive me. I have moved those enum values as #defines, but of course, now I get error from struct: doesn't know who is FILE_FLAGS flags; from level1 struct.

              /*
              typedef enum {
              FILE_READONLY = 0x00000001,
              FILE_HIDDEN = 0x00000002,
              FILE_SYSTEM = 0x00000004,

              FILE\_DIRECTORY = 0x00000010,
              FILE\_ARCHIVE = 0x00000020,
              FILE\_DEVICE = 0x00000040,
              FILE\_NORMAL = 0x00000080,
              
              FILE\_TEMPORARY = 0x00000100,
              

              ....
              .....

              }FILE_FLAGS;
              */

              #define FILE_READONLY = 0x00000001
              #define FILE_HIDDEN = 0x00000002
              #define FILE_SYSTEM = 0x00000004

              of course, FILE_FLAGS enum has disappeared ... obviously, I don't understood something ... but what ?

              struct level1
              {
              FILE_FLAGS flags; // <-- error
              ....
              };

              V Offline
              V Offline
              Victor Nijegorodov
              wrote on last edited by
              #19

              _Flaviu wrote:

              struct level1 { FILE_FLAGS flags; // <-- error .... };

              Try

              struct level1
              {
              int flags; // <-- error
              ....
              };

              _ 1 Reply Last reply
              0
              • V Victor Nijegorodov

                _Flaviu wrote:

                struct level1 { FILE_FLAGS flags; // <-- error .... };

                Try

                struct level1
                {
                int flags; // <-- error
                ....
                };

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                _Flaviu
                wrote on last edited by
                #20

                Ok, but even flag is comming as function parameter, just like this:

                static void SomeFunction(level1* na, FILE_FLAGS flag)
                {
                ....
                na->flags |= ~flag;
                ....
                }

                So, I guess I cannot give up FILE_FLAGS enum ... don't I ?

                V 1 Reply Last reply
                0
                • _ _Flaviu

                  Ok, but even flag is comming as function parameter, just like this:

                  static void SomeFunction(level1* na, FILE_FLAGS flag)
                  {
                  ....
                  na->flags |= ~flag;
                  ....
                  }

                  So, I guess I cannot give up FILE_FLAGS enum ... don't I ?

                  V Offline
                  V Offline
                  Victor Nijegorodov
                  wrote on last edited by
                  #21

                  Change this parameter to be

                  static void SomeFunction(level1* na, int flag)
                  {

                  1 Reply Last reply
                  0
                  • _ _Flaviu

                    I am not get something, so forgive me. I have moved those enum values as #defines, but of course, now I get error from struct: doesn't know who is FILE_FLAGS flags; from level1 struct.

                    /*
                    typedef enum {
                    FILE_READONLY = 0x00000001,
                    FILE_HIDDEN = 0x00000002,
                    FILE_SYSTEM = 0x00000004,

                    FILE\_DIRECTORY = 0x00000010,
                    FILE\_ARCHIVE = 0x00000020,
                    FILE\_DEVICE = 0x00000040,
                    FILE\_NORMAL = 0x00000080,
                    
                    FILE\_TEMPORARY = 0x00000100,
                    

                    ....
                    .....

                    }FILE_FLAGS;
                    */

                    #define FILE_READONLY = 0x00000001
                    #define FILE_HIDDEN = 0x00000002
                    #define FILE_SYSTEM = 0x00000004

                    of course, FILE_FLAGS enum has disappeared ... obviously, I don't understood something ... but what ?

                    struct level1
                    {
                    FILE_FLAGS flags; // <-- error
                    ....
                    };

                    L Offline
                    L Offline
                    Lost User
                    wrote on last edited by
                    #22

                    Add this line somewhere before the first reference to FILE_FLAGS :

                    typedef int FILE_FLAGS;

                    _ 1 Reply Last reply
                    0
                    • L Lost User

                      Add this line somewhere before the first reference to FILE_FLAGS :

                      typedef int FILE_FLAGS;

                      _ Offline
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                      _Flaviu
                      wrote on last edited by
                      #23

                      I encounter another error if I made these modifications:

                      data->com = na->flags & ATTR_IS_COMPRESSED; // <-- error C2059: syntax error : '='

                      (where data->com is int) because now ATTR_IS_COMPRESSED is #define, not part of enum FILE_FLAGS ...

                      L 2 Replies Last reply
                      0
                      • _ _Flaviu

                        I encounter another error if I made these modifications:

                        data->com = na->flags & ATTR_IS_COMPRESSED; // <-- error C2059: syntax error : '='

                        (where data->com is int) because now ATTR_IS_COMPRESSED is #define, not part of enum FILE_FLAGS ...

                        L Offline
                        L Offline
                        Lost User
                        wrote on last edited by
                        #24

                        What is data->com?

                        _Flaviu wrote:

                        because now ATTR_IS_COMPRESSED is #define, not part of enum FILE_FLAGS

                        That is not the reason. I can only assume that you have done a partial change and some parts of your code are still incorrect. If you still have the FILE_FLAGS enum then it is going to cause problems. It would probably help if you showed all the code portions that are connected. It is difficult to be certain of the answers when looking at only a single line of code.

                        1 Reply Last reply
                        0
                        • _ _Flaviu

                          I encounter another error if I made these modifications:

                          data->com = na->flags & ATTR_IS_COMPRESSED; // <-- error C2059: syntax error : '='

                          (where data->com is int) because now ATTR_IS_COMPRESSED is #define, not part of enum FILE_FLAGS ...

                          L Offline
                          L Offline
                          Lost User
                          wrote on last edited by
                          #25

                          I still cannot see enough information. Please provide what I previously requested and reply to this message. Please do not email me personally.

                          _ 3 Replies Last reply
                          0
                          • L Lost User

                            I still cannot see enough information. Please provide what I previously requested and reply to this message. Please do not email me personally.

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                            _Flaviu
                            wrote on last edited by
                            #26

                            I only said that I updated the previous post.

                            1 Reply Last reply
                            0
                            • L Lost User

                              I still cannot see enough information. Please provide what I previously requested and reply to this message. Please do not email me personally.

                              _ Offline
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                              _Flaviu
                              wrote on last edited by
                              #27

                              I only said that I updated the previous post. Ok, I will come with new informations.

                              1 Reply Last reply
                              0
                              • L Lost User

                                I still cannot see enough information. Please provide what I previously requested and reply to this message. Please do not email me personally.

                                _ Offline
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                                _Flaviu
                                wrote on last edited by
                                #28

                                The fact is like that: I have an error:

                                error C2059: syntax error : '='

                                the error is reported here:

                                data->com = na->flags & ATTR_IS_COMPRESSED;

                                where: data is a struct:

                                struct data
                                {
                                .....
                                int com;
                                ...
                                };

                                and na is

                                RECORD* na;

                                and RECORD is:

                                typedef struct {
                                ....
                                ....
                                int flags;
                                .....
                                }RECORD;

                                and

                                ATTR_IS_COMPRESSED

                                is from here (from my modifications):

                                typedef int ATTR_FLAGS;

                                //typedef enum {
                                // ATTR_IS_COMPRESSED = 0x0001,
                                // ATTR_COMPRESSION_MASK = 0x00ff,
                                //}ATTR_FLAGS;

                                #define ATTR_IS_COMPRESSED = 0x0001
                                #define ATTR_COMPRESSION_MASK = 0x00ff

                                L 1 Reply Last reply
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                                • _ _Flaviu

                                  The fact is like that: I have an error:

                                  error C2059: syntax error : '='

                                  the error is reported here:

                                  data->com = na->flags & ATTR_IS_COMPRESSED;

                                  where: data is a struct:

                                  struct data
                                  {
                                  .....
                                  int com;
                                  ...
                                  };

                                  and na is

                                  RECORD* na;

                                  and RECORD is:

                                  typedef struct {
                                  ....
                                  ....
                                  int flags;
                                  .....
                                  }RECORD;

                                  and

                                  ATTR_IS_COMPRESSED

                                  is from here (from my modifications):

                                  typedef int ATTR_FLAGS;

                                  //typedef enum {
                                  // ATTR_IS_COMPRESSED = 0x0001,
                                  // ATTR_COMPRESSION_MASK = 0x00ff,
                                  //}ATTR_FLAGS;

                                  #define ATTR_IS_COMPRESSED = 0x0001
                                  #define ATTR_COMPRESSION_MASK = 0x00ff

                                  L Offline
                                  L Offline
                                  Lost User
                                  wrote on last edited by
                                  #29

                                  Not sure why you posted all that back to front ... However there are a couple of simple mistakes: #define statements do not require an = sign. They should be

                                  #define ATTR_IS_COMPRESSED 0x0001
                                  #define ATTR_COMPRESSION_MASK 0x00ff

                                  The name data refers to a struct definition, not a variable. You need something like:

                                  typedef struct
                                  {
                                  .....
                                  int com;
                                  ...
                                  } DATA;

                                  DATA* data;

                                  I am assuming that you actually assign the memory required for both structures at some point further on.

                                  _ 1 Reply Last reply
                                  0
                                  • L Lost User

                                    Not sure why you posted all that back to front ... However there are a couple of simple mistakes: #define statements do not require an = sign. They should be

                                    #define ATTR_IS_COMPRESSED 0x0001
                                    #define ATTR_COMPRESSION_MASK 0x00ff

                                    The name data refers to a struct definition, not a variable. You need something like:

                                    typedef struct
                                    {
                                    .....
                                    int com;
                                    ...
                                    } DATA;

                                    DATA* data;

                                    I am assuming that you actually assign the memory required for both structures at some point further on.

                                    _ Offline
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                                    _Flaviu
                                    wrote on last edited by
                                    #30

                                    That was the problem, on #define: I assigned with '='. My bad !

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