diff options
Diffstat (limited to 'manual/stdio.texi')
| -rw-r--r-- | manual/stdio.texi | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/manual/stdio.texi b/manual/stdio.texi index 4aa1a2b..f6319a4 100644 --- a/manual/stdio.texi +++ b/manual/stdio.texi @@ -2412,9 +2412,10 @@ allocate at least @var{size} wide characters for the string @var{ws}. The return value is the number of characters generated for the given input, excluding the trailing null. If not all output fits into the -provided buffer a negative value is returned. You should try again with -a bigger output string. @emph{Note:} this is different from how -@code{snprintf} handles this situation. +provided buffer a negative value is returned, and @code{errno} is set to +@code{E2BIG}. (The setting of @code{errno} is a GNU extension.) You +should try again with a bigger output string. @emph{Note:} this is +different from how @code{snprintf} handles this situation. Note that the corresponding narrow stream function takes fewer parameters. @code{swprintf} in fact corresponds to the @code{snprintf} |