[PATCH ld/maint-diff-quiet-w] Windows: redirect fopen("/dev/null") to fopen("nul")

[Johannes Sixt <j.sixt@viscovery.net>]

From: Johannes Sixt <j6t@kdbg.org>

An instance of fopen("/dev/null",...) was added to the code base. On
Windows, we have to use "nul" instead. This implements a compatibility
wrapper of fopen() that checks for this particular condition.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
---
 compat/mingw.c |    8 ++++++++
 compat/mingw.h |    3 +++
 2 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/compat/mingw.c b/compat/mingw.c
index 5edf152..57aec93 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -140,6 +140,14 @@ int mingw_open (const char *filename, int oflags, ...)
 	return fd;
 }

+#undef fopen
+FILE *mingw_fopen (const char *filename, const char *otype)
+{
+	if (!strcmp(filename, "/dev/null"))
+		filename = "nul";
+	return fopen(filename, otype);
+}
+
 /*
  * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
  * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
diff --git a/compat/mingw.h b/compat/mingw.h
index f53bcca..e187b04 100644
--- a/compat/mingw.h
+++ b/compat/mingw.h
@@ -170,6 +170,9 @@ int link(const char *oldpath, const char *newpath);
 int mingw_open (const char *filename, int oflags, ...);
 #define open mingw_open

+FILE *mingw_fopen (const char *filename, const char *otype);
+#define fopen mingw_fopen
+
 char *mingw_getcwd(char *pointer, int len);
 #define getcwd mingw_getcwd

-- 
1.7.0.1285.g1a907.dirty