Merge branch 'sb/pull-rebase'

[git.git] / compat / snprintf.c

diff --git a/compat/snprintf.c b/compat/snprintf.c
index 580966e56a3455b9970b7eef33143c1e9c57d41c..6c0fb056a571b30627e404d7f164de31ed1a8699 100644 (file)
--- a/compat/snprintf.c
+++ b/compat/snprintf.c
@@ -6,8 +6,12 @@
  * number of characters to write without the trailing NUL.
  */
 #ifndef SNPRINTF_SIZE_CORR
+#if defined(__MINGW32__) && defined(__GNUC__) && __GNUC__ < 4
+#define SNPRINTF_SIZE_CORR 1
+#else
 #define SNPRINTF_SIZE_CORR 0
 #endif
+#endif
 
 #undef vsnprintf
 int git_vsnprintf(char *str, size_t maxsize, const char *format, va_list ap)
@@ -17,6 +21,8 @@ int git_vsnprintf(char *str, size_t maxsize, const char *format, va_list ap)
 
        if (maxsize > 0) {
                ret = vsnprintf(str, maxsize-SNPRINTF_SIZE_CORR, format, ap);
+               if (ret == maxsize-1)
+                       ret = -1;
                /* Windows does not NUL-terminate if result fills buffer */
                str[maxsize-1] = 0;
        }
@@ -34,6 +40,8 @@ int git_vsnprintf(char *str, size_t maxsize, const char *format, va_list ap)
                        break;
                s = str;
                ret = vsnprintf(str, maxsize-SNPRINTF_SIZE_CORR, format, ap);
+               if (ret == maxsize-1)
+                       ret = -1;
        }
        free(s);
        return ret;