diff options
Diffstat (limited to 'newlib/libc/posix/popen.c')
| -rw-r--r-- | newlib/libc/posix/popen.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/newlib/libc/posix/popen.c b/newlib/libc/posix/popen.c index d6d174d08..f522c0b9d 100644 --- a/newlib/libc/posix/popen.c +++ b/newlib/libc/posix/popen.c @@ -71,7 +71,12 @@ popen(program, type) FILE *iop; int pdes[2], pid; - if ((*type != 'r' && *type != 'w') || type[1]) { + if ((*type != 'r' && *type != 'w') + || (type[1] +#ifdef __CYGWIN__ + && (type[2] || (type[1] != 'b' && type[1] != 't')) +#endif + )) { errno = EINVAL; return (NULL); } |