X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=compat%2Fsnprintf.c;h=e1e0e7543d9414726122c121b7909bf73809a81a;hb=0adc030615fbec4ca20b5fe0b61ed118e82122dc;hp=6c0fb056a571b30627e404d7f164de31ed1a8699;hpb=7d1b50981277c59a788298751f121567a1e75202;p=git.git

diff --git a/compat/snprintf.c b/compat/snprintf.c
index 6c0fb056a..e1e0e7543 100644
--- a/compat/snprintf.c
+++ b/compat/snprintf.c
@@ -2,11 +2,14 @@
 
 /*
  * The size parameter specifies the available space, i.e. includes
- * the trailing NUL byte; but Windows's vsnprintf expects the
- * number of characters to write without the trailing NUL.
+ * the trailing NUL byte; but Windows's vsnprintf uses the entire
+ * buffer and avoids the trailing NUL, should the buffer be exactly
+ * big enough for the result. Defining SNPRINTF_SIZE_CORR to 1 will
+ * therefore remove 1 byte from the reported buffer size, so we
+ * always have room for a trailing NUL byte.
  */
 #ifndef SNPRINTF_SIZE_CORR
-#if defined(__MINGW32__) && defined(__GNUC__) && __GNUC__ < 4
+#if defined(WIN32) && (!defined(__GNUC__) || __GNUC__ < 4)
 #define SNPRINTF_SIZE_CORR 1
 #else
 #define SNPRINTF_SIZE_CORR 0