Regarding EOF while reading from a file

[Robins_Lazer]

Hi ,

I am facing a peculiar problem. The lexer is getting EOF character well before the actual EOF while reading from the input file during the lexer-parser communication for parsing.

This is leading to incorrect behavior of the parser.
This happens only when the test cases are submitted in through the regression suites. But the same thing does not happen when the test cases are submitted individually.

Does anybody have any idea about this problem??

I have defined YY_INPUT as follows:

#define YY_INPUT(buf,result,max_size) \
{ \
    int  nc = 0;                                     \
    long cp = 0;                                     \
    int c = fgetc(yyin);                             \
    if (c != EOF)   {                                \
       if (c == CARRIAGE_RETURN_CHAR) {              \
           cp = ftell(yyin);                         \
           nc = fgetc(yyin);                         \
           if (nc == NEW_LINE_CHAR)                  \
                c = nc;                              \
           else {                                    \
               if (nc == EOF)                        \
                   c = EOF;                          \
               else {                                \
                   c = NEW_LINE_CHAR;                \
                   fseek(yyin, cp, SEEK_SET);        \
                   fflush(yyin);                     \
              }                                      \
          }                                          \
      }                                              \
    }                                                \
    result = (c == EOF) ? YY_NULL : (buf[0] = c, 1); \
}

Regards
Robins
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