mode_t bitwise operations different under kFreeBSD?

[Nikolaus Rath <Nikolaus@rath.org>]

Hello,

I'm having trouble figuring out why this build fails on kFreeBSD:

https://buildd.debian.org/fetch.cgi?pkg=python-llfuse&arch=kfreebsd-i386&ver=0.33-1&stamp=1310240749&file=log

The crucial errors seems to be:

gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -g -O2 -fPIC -g -I/usr/include/python2.7 -c src/llfuse.c -o build/temp.gnukfreebsd-8.1-1-686-smp-i686-2.7/src/llfuse.o -D_FILE_OFFSET_BITS=64 -I/usr/include/fuse -DFUSE_USE_VERSION=28 -DLLFUSE_VERSION="0.33" -Werror -Wall -Wextra -Wconversion -Wno-unused-parameter -Wno-sign-conversion -Wno-unused-but-set-variable -fno-strict-aliasing
src/llfuse.c: In function '__pyx_f_6llfuse_fuse_mkdir':
src/llfuse.c:4693:50: error: conversion to 'mode_t' from 'int' may alter its value [-Werror=conversion]

Now, llfuse.c is itself code generated by Cython, so it's hard to read.
However, the assignment that gcc complains about is just this:

static  void __pyx_f_6llfuse_fuse_mkdir(fuse_req_t __pyx_v_req, fuse_ino_t __pyx_v_parent, const char *__pyx_v_name, mode_t __pyx_v_mode) {
    [....]
    __pyx_v_mode = ((__pyx_v_mode & (~S_IFMT)) | S_IFDIR);


i.e., I'm making sure that the type bits of a mode_t variable are set to
S_IFDIR.

Why does this require a conversion in kFreeBSD?


Thanks,

   -Nikolaus

-- 
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