Control: reassign -1 src:eglibc 2.17-97 On Ma, 04 mar 14, 07:39:04, Fredrik Tolf wrote: > Source: libc6 > Version: 2.17-97 > Severity: normal > > Dear Maintainer, > > The libc6 manpage on fopencookie() says, with regards to the writer > function in the cookie_io_functions_t, that "As its function result, > the write function should return the number of bytes copied from > buf, or 0 on error." Similarly, the Texinfo manual says that "Your > function should transfer up to SIZE bytes from the buffer, and return > the number of bytes written." > > This seems to imply that the writer function is supposed to work > similar to write(2) and may choose to consume less data than is > passed to it, and return how much data it did in fact consume. > However, when I actually do this, libc seems to consider that an > error and the stream stops working. As soon as I change my writer > function so that it does consume all the data in the buffer, my > program starts working as expected. > > I can't say I know if it's the code or the documentation which is > wrong, but at least one of them seems to be in error. > > -- > Fredrik Tolf > > -- System Information: > Debian Release: jessie/sid > APT prefers testing > APT policy: (500, 'testing'), (99, 'unstable'), (1, 'experimental') > Architecture: amd64 (x86_64) > Foreign Architectures: i386 > > Kernel: Linux 3.12-1-amd64 (SMP w/4 CPU cores) > Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) > Shell: /bin/sh linked to /bin/dash
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