Add substitutes for snprintf() and vsnprintf()

To deal with fools^Wpeople trying to keep really old systems alive,
create a proper framework for substitution functions, and make it
possible to deal with the lack of snprintf/vsnprintf in particular.

1 files changed, 16 insertions, 5 deletions

diff --git a/compiler.h b/compiler.h
index 8ceb9ee..798466f 100644
--- a/compiler.h
+++ b/compiler.h
@@ -38,13 +38,24 @@
 #endif
 
 /* Some versions of MSVC have these only with underscores in front */
-
-#if !defined(HAVE_SNPRINTF) && defined(HAVE__SNPRINTF)
-# define snprintf _snprintf
+#include <stdio.h>
+#include <stddef.h>
+#include <stdarg.h>
+
+#ifndef HAVE_SNPRINTF
+# ifdef HAVE__SNPRINTF
+#  define snprintf _snprintf
+# else
+int snprintf(char *, size_t, const char *, ...);
+# endif
 #endif
 
-#if !defined(HAVE_VSNPRINTF) && defined(HAVE__VSNPRINTF)
-# define vsnprintf _vsnprintf
+#ifndef HAVE_VSNPRINTF
+# ifdef HAVE__VSNPRINT
+#  define vsnprintf _vsnprintf
+# else
+int vsnprintf(char *, size_t, const char *, va_list);
+# endif
 #endif
 
 #endif	/* COMPILER_H */