From fa5f62272997ea5b402ce28c2b197afe1a3c9422 Mon Sep 17 00:00:00 2001
From: Coiby Xu <coiby.xu@gmail.com>
Date: Tue, 15 Jun 2021 10:57:45 +0800
Subject: [PATCH 6/8] fix "src/dmierror.c:55:9:
 warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL buf where
 non-null expected"

Fix the following error found by covscan,
    python-dmidecode-3.12.2/src/dmierror.c:55:9: warning[-Wanalyzer-possible-null-argument]: use of possibly-NULL buf where non-null expected
    /usr/include/python3.9/Python.h:30: included_from: Included from here.
    python-dmidecode-3.12.2/src/dmierror.c:32: included_from: Included from here.
    /usr/include/string.h:61:14: note: argument 1 of memset must be non-null
    #   53|           va_start(ap, fmt);
    #   54|           buf = (char *) malloc(4098);
    #   55|->         memset(buf, 0, 4098);
    #   56|
    #   57|           if( buf == NULL ) {

Signed-off-by: Coiby Xu <coiby.xu@gmail.com>
---
 src/dmierror.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/dmierror.c b/src/dmierror.c
index d64b4b9..7054cd8 100644
--- a/src/dmierror.c
+++ b/src/dmierror.c
@@ -52,7 +52,6 @@ void _pyReturnError(void *exception, const char *fname, int line, const char *fm
 
         va_start(ap, fmt);
         buf = (char *) malloc(4098);
-        memset(buf, 0, 4098);
 
         if( buf == NULL ) {
                 // Backup routine if we can't get the needed memory
@@ -64,6 +63,7 @@ void _pyReturnError(void *exception, const char *fname, int line, const char *fm
                 return;
         }
 
+        memset(buf, 0, 4098);
         // Set the error state and message
         snprintf(buf, 4096, "[%s:%i] %s", fname, line, fmt);
         PyErr_Format(exception, buf, ap);
-- 
2.31.1