Merge branch 'lt/fix-sol-pack' into next

* lt/fix-sol-pack:
  Use sigaction and SA_RESTART in read-tree.c; add option in Makefile.
  safe_fgets() - even more anal fgets()

diff --cc pack-objects.c
index 0ea16ad,7d62477..d7ba938
--- 1/pack-objects.c
--- 2/pack-objects.c
+++ b/pack-objects.c
@@@ -1118,17 -915,15 +1118,18 @@@ int main(int argc, char **argv
                                break;
                        if (!ferror(stdin))
                                die("fgets returned NULL, not EOF, not error!");
-                       if (errno == EINTR)
-                               continue;
-                       die("fgets: %s", strerror(errno));
+                       if (errno != EINTR)
+                               die("fgets: %s", strerror(errno));
+                       clearerr(stdin);
+                       continue;
                }
  
 -              if (progress_update) {
 -                      fprintf(stderr, "Counting objects...%d\r", nr_objects);
 -                      progress_update = 0;
 +              if (line[0] == '-') {
 +                      if (get_sha1_hex(line+1, sha1))
 +                              die("expected edge sha1, got garbage:\n %s",
 +                                  line+1);
 +                      add_preferred_base(sha1);
 +                      continue;
                }
                if (get_sha1_hex(line, sha1))
                        die("expected sha1, got garbage:\n %s", line);

diff --cc read-tree.c
Simple merge