Unexplainable compiler error?? "fatal error #1043: Input buffer overflow."

[brettk]

I keep getting this compiler error for a specific file. It seems to be complaining about the length of a define, but I have shortened it over and over and it's still complaining. It'll complain about a random line, it's always different. How do I get passed this error so I can compile my code?

[bitcoin]

give your code example, Pelles C version, OS..

[TimoVJL]

In Pelles C max line length is below 4096 chars.

EDIT:

WG14/N1256 Committee Draft — Septermber 7, 2007 ISO/IEC 9899:TC3

—4095 characters in a logical source line
—4095 characters in a character string literal or wide string literal (after concatenation)

[brettk]

In Pelles C max line length is below 4096 chars.

What is the definition of a "line" then? Because that is definitely not the problem. And I have lines much longer than that.

[frankie]

Input file lines length.
Maximum PellesC input line lenght is 4095 chars.
As previously pointed out by Timo, the limits of translation, specify the length of logical lines, see ISO/IEC 9899:2017 §5.2.4.1 Translation limits (but also C99-C11), as follow:

The implementation shall be able to translate and execute at least one program that contains at least
one instance of every one of the following limits:

• 127 nesting levels of blocks
  
• 63 nesting levels of conditional inclusion
  
• 12 pointer, array, and function declarators (in any combinations) modifying an arithmetic, structure, union, or void type in a declaration
  
• 63 nesting levels of parenthesized declarators within a full declarator
  
• 63 nesting levels of parenthesized expressions within a full expression
  
• 63 significant initial characters in an internal identifier or a macro name(each universal character name or extended source character is considered a single character)
  
• 31 significant initial characters in an external identifier (each universal character name specifying a short identifier of 0000FFFF or less is considered 6 characters, each universal character name specifying a short identifier of 00010000 or more is considered 10 characters, and each extended source character is considered the same number of characters as the corresponding universal character name, if any)
  
• 4095 external identifiers in one translation unit
  
• 511 identifiers with block scope declared in one block
  
• 4095 macro identifiers simultaneously defined in one preprocessing translation unit
  
• 127 parameters in one function definition
  
• 127 arguments in one function call
  
• 127 parameters in one macro definition
  
• 127 arguments in one macro invocation
  
• 4095 characters in a logical source line
  
• 4095 characters in a string literal (after concatenation)
  
• 65535 bytes in an object (in a hosted environment only)
  
• 15 nesting levels for #included files
  
• 1023 case labels for a switch statement (excluding those for any nested switch statements)
  
• 1023 members in a single structure or union
  
• 1023 enumeration constants in a single enumeration
  
• 63 levels of nested structure or union definitions in a single struct-declaration-list
  

You should check that your source is compliant with each one of the limits above, if your code can compile with a different compiler it should be considered a custom extension of such a compiler, and then the code not portable.