diff options
Diffstat (limited to 'Python/pythonrun.c')
| -rw-r--r-- | Python/pythonrun.c | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/Python/pythonrun.c b/Python/pythonrun.c index fe92d30..4b0ac13 100644 --- a/Python/pythonrun.c +++ b/Python/pythonrun.c @@ -892,6 +892,19 @@ error: return NULL; } +static int +is_valid_fd(int fd) +{ + int dummy_fd; + if (fd < 0 || !_PyVerify_fd(fd)) + return 0; + dummy_fd = dup(fd); + if (dummy_fd < 0) + return 0; + close(dummy_fd); + return 1; +} + /* Initialize sys.stdin, stdout, stderr and builtins.open */ static int initstdio(void) @@ -951,13 +964,9 @@ initstdio(void) * and fileno() may point to an invalid file descriptor. For example * GUI apps don't have valid standard streams by default. */ - if (fd < 0) { -#ifdef MS_WINDOWS + if (!is_valid_fd(fd)) { std = Py_None; Py_INCREF(std); -#else - goto error; -#endif } else { std = create_stdio(iomod, fd, 0, "<stdin>", encoding, errors); @@ -970,13 +979,9 @@ initstdio(void) /* Set sys.stdout */ fd = fileno(stdout); - if (fd < 0) { -#ifdef MS_WINDOWS + if (!is_valid_fd(fd)) { std = Py_None; Py_INCREF(std); -#else - goto error; -#endif } else { std = create_stdio(iomod, fd, 1, "<stdout>", encoding, errors); @@ -990,13 +995,9 @@ initstdio(void) #if 1 /* Disable this if you have trouble debugging bootstrap stuff */ /* Set sys.stderr, replaces the preliminary stderr */ fd = fileno(stderr); - if (fd < 0) { -#ifdef MS_WINDOWS + if (!is_valid_fd(fd)) { std = Py_None; Py_INCREF(std); -#else - goto error; -#endif } else { std = create_stdio(iomod, fd, 1, "<stderr>", encoding, "backslashreplace"); |