win32: workaround msvcrt *printf defects

1 files changed, 14 insertions, 0 deletions

diff --git a/libbb/xfuncs_printf.c b/libbb/xfuncs_printf.c
index 7207ec58a..f8b1b81cd 100644
--- a/libbb/xfuncs_printf.c
+++ b/libbb/xfuncs_printf.c
@@ -287,8 +287,22 @@ char* FAST_FUNC xasprintf(const char *format, ...)
         char *string_ptr;
 
         va_start(p, format);
+#if ENABLE_PLATFORM_MINGW32
+        string_ptr = xmalloc(1024);
+        r = vsnprintf(string_ptr, 1024, format, p);
+        va_end(p);
+        if (r > 0) {
+                free(string_ptr);
+                r += 2;
+                string_ptr = xmalloc(r);
+                va_start(p, format);
+                r = vsnprintf(string_ptr, r, format, p);
+                va_end(p);
+        }
+#else
         r = vasprintf(&string_ptr, format, p);
         va_end(p);
+#endif
 
         if (r < 0)
                 bb_error_msg_and_die(bb_msg_memory_exhausted);