INTROL-C COMPILER REFERENCE MANUAL

string too long, truncated at right
This indicates that a string exceeded the maximum string
constant length (the current limit is 256 characters, including
the terminating NULL).
struct/union tag used but not defined in block
A structure or union tag was used but not defined in the
current program file, function, or block.
structure/union size unknown
This message is generated when the size of a structure or union
is required (as in the sizeof operator) but is not known
because the struct or union definition has not yet been
encountered.
too many #define parameters
Too many parameters in a #define directive. The current limit
is approximately 25.
too many nested #ifs
Too many nested #ifdef or #ifndef directives. This includes
those due to #include files. The current limit is approximately
15.
unbalanced comment
This indicates that the End Of File was encountered before a
comment was completed. Remember: Introl-C allows nesting of
comments. Each /* must have its own */ to terminate it.
undeclared identifier, assuming auto int
An identifier was encountered which has not been defined. The
Compiler will assume it was declared as an automatic integer.
Notice that this assumption may cause the Compiler to generate
additional error messages if the identifier is used in a
fashion which is not permitted for an auto int.
unexpected end of file, unbalanced #if, #ifdef, or #ifndef
The End Of File was encountered before an #ifdef or #ifndef was
completed by an #endif directive.
unexpected end of file
The End of File was encountered while the Compiler was still
trying to complete some construct. For example, if the Compiler
has not yet encountered the closing brace of a function
definition and encounters the EOF, it will print this message.
unmatched paren or quote in macro call ... end of file
The End Of File was encountered while the Compiler was
searching for an expected close quote or a right paren.
unrecognizable preprocessor directive
This indicates that a # in column 1 was followed by an unknown
directive. Check the spelling of the directive.
C.4.10