merge-file: handle freopen() failure

[git.git] / fast-import.c

diff --git a/fast-import.c b/fast-import.c
index 171d1783399c970136d55cf86fdb78b5c4edce65..a6bce661963812691503116e8d61d9ef90f96526 100644 (file)
--- a/fast-import.c
+++ b/fast-import.c
@@ -1748,9 +1748,12 @@ static int validate_raw_date(const char *src, char *result, int maxlen)
 {
        const char *orig_src = src;
        char *endp, sign;
+       unsigned long date;
 
-       strtoul(src, &endp, 10);
-       if (endp == src || *endp != ' ')
+       errno = 0;
+
+       date = strtoul(src, &endp, 10);
+       if (errno || endp == src || *endp != ' ')
                return -1;
 
        src = endp + 1;
@@ -1758,8 +1761,8 @@ static int validate_raw_date(const char *src, char *result, int maxlen)
                return -1;
        sign = *src;
 
-       strtoul(src + 1, &endp, 10);
-       if (endp == src || *endp || (endp - orig_src) >= maxlen)
+       date = strtoul(src + 1, &endp, 10);
+       if (errno || endp == src || *endp || (endp - orig_src) >= maxlen)
                return -1;
 
        strcpy(result, orig_src);