pForth strings vs C strings

[Craig Lindley]

I am trying to pass 2 strings from pForth to a primitive I am writing in C. I thought the way to do that would be something like:

c" String1" c" String2" myPrimitive

However myPrimitive is receiving two pointers to the same string. Here is my test.

c" String 1" c" String2" .  .

I get back the following

 1073674112  1073674112

Obviously the storage for parsing the string is being overwritten by the last c" string. Does pForth have a word/function that builds a real C null terminated string and leaves its address on the stack?

[Phil Burk]

The word C" has different behavior depending on whether it is inside or outside a word.

Enter:

   see c"

to see a decompiled definition.

  c" String 1" c" String2"

will place both string on the PAD.

  : FOO   c" String 1" c" String2" ;

will compile two strings into the dictionary at different locations.

> Does pForth have a word/function that builds a real C null terminated string and leaves its address on the stack?

I can't think of one. c" is defined in system.fth. You can define a similar word that does 

   0 c,

after the string as a NUL terminator. Then return the forth string address 1+

Phil Burk

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