diff options
| author | tjr <tjr@FreeBSD.org> | 2002-12-20 08:28:10 +0000 |
|---|---|---|
| committer | tjr <tjr@FreeBSD.org> | 2002-12-20 08:28:10 +0000 |
| commit | 08218617f475dff61ed68f3d0803efe63c59525d (patch) | |
| tree | 7cf91df7dd9f6d66d4ca27971695a0f558b48ff2 /lib/libc/stdio/printf.3 | |
| parent | 9b26000e8df20bd325528f90c3529c0197eb5488 (diff) | |
| download | FreeBSD-src-08218617f475dff61ed68f3d0803efe63c59525d.zip FreeBSD-src-08218617f475dff61ed68f3d0803efe63c59525d.tar.gz | |
Document the fact that the printf() family of functions return negative
values (EOF in our case) on error, and some of the possible errno values
in an Errors section.
PR: 39257
Diffstat (limited to 'lib/libc/stdio/printf.3')
| -rw-r--r-- | lib/libc/stdio/printf.3 | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/lib/libc/stdio/printf.3 b/lib/libc/stdio/printf.3 index f5848dd..7e73f24 100644 --- a/lib/libc/stdio/printf.3 +++ b/lib/libc/stdio/printf.3 @@ -36,7 +36,7 @@ .\" @(#)printf.3 8.1 (Berkeley) 6/4/93 .\" $FreeBSD$ .\" -.Dd November 8, 2001 +.Dd December 20, 2002 .Dt PRINTF 3 .Os .Sh NAME @@ -111,7 +111,7 @@ are converted for output. These functions return the number of characters printed (not including the trailing .Ql \e0 -used to end output to strings), +used to end output to strings) or a negative value if an output error occurs, except for .Fn snprintf and @@ -767,6 +767,18 @@ for later interpolation by Always use the proper secure idiom: .Pp .Dl "snprintf(buffer, sizeof(buffer), \*q%s\*q, string);" +.Sh ERRORS +In addition to the errors documented for the +.Xr write 2 +system call, the +.Fn printf +family of functions may fail if: +.Bl -tag -width Er +.It Bq Er EILSEQ +An invalid wide character code was encountered. +.It Bq Er ENOMEM +Insufficient storage space is available. +.El .Sh SEE ALSO .Xr printf 1 , .Xr fmtcheck 3 , |
