Re: stdin/stdout

• Subject: Re: stdin/stdout
• From: Jordan Hubbard <email@hidden>
• Date: Sat, 22 May 2004 22:08:40 -0700

I was attempting to compile the latest version of flex, 2.5.31, when it failed with three errors. All three had to do with invalid lvalues so I opened up filter.c (the offending file) and checked the lines. They were of the form:
if ((stdin = fdopen(0, "r") == NULL)

Since I had just successfully compiled this version on linux, I decided to open /usr/include/stdio.h to see just how stdin and stdout were defined. Here is what I found:
#define stdin (&__sF[0])
#define stdout (&__sF[1])
#define stderr (&__sF[2])

I checked the stdio.h file on the linux computer to see what it contained. It had:
extern FILE *stdin; /* Standard input stream. */
extern FILE *stdout; /* Standard output stream. */
extern FILE *stderr; /* Standard error output stream. */

• Prev by Date: Re: stdin/stdout
• Next by Date: Re: stdin/stdout
• Previous by thread: Re: stdin/stdout
• Next by thread: gcc and using constants in array declarations
• Index(es):
  • Date
  • Thread