Hi.
When calling
freopen(NULL, mode, stream);
on MS Windows using MinGW segfaults because it tries to strcmp(NULL,
"/dev/null")... *ouch*
--------------------
--- freopen.c.orig 2011-08-03 14:22:15 +0200
+++ freopen.c 2011-08-25 21:01:46 +0200
@@ -38,7 +38,7 @@
rpl_freopen (const char *filename, const char *mode, FILE *stream)
{
#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
- if (strcmp (filename, "/dev/null") == 0)
+ if (filename && strcmp (filename, "/dev/null") == 0)
filename = "NUL";
#endif
--------------------
Furthermore, using NULL as filename does not work at all using the MS
C runtime library (debug assertion violation).
--------------------
--- freopen.c.1 2011-08-25 21:05:34 +0200
+++ freopen.c 2011-08-25 21:08:52 +0200
@@ -38,6 +38,9 @@
rpl_freopen (const char *filename, const char *mode, FILE *stream)
{
#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+# ifdef _MSC_VER
+ if (!filename) return NULL; /* would trigger a runtime error on MSVC */
+# endif
if (filename && strcmp (filename, "/dev/null") == 0)
filename = "NUL";
#endif
--------------------
Using MinGW and trying to change stdout's mode to binary simply fails:
if (!isatty(fileno(stdout))
freopen(NULL, "wb", stdout); /* <- returns NULL */
Would it be feasible to use the _setmode function in rpl_freopen
instead of freopen if the filename == NULL on win32 (non-cygwin)?
What about the fsetbinary, xfchangemode functions discussed here
[http://lists.gnu.org/archive/html/bug-gnulib/2010-03/msg00111.html]?
Cheers,
--
Claudio
