File gcc8-integer-overflow.patch of Package apr.12637

diff --git a/test/teststr.c b/test/teststr.c
index d9a505475..7c945886d 100644
--- a/test/teststr.c
+++ b/test/teststr.c
@@ -307,7 +307,8 @@ static void overflow_strfsize(abts_case *tc, void *data)
     for (; off < 999999999; off += 999) {
         apr_strfsize(off, buf);
     }
-    for (off = 1; off < LONG_MAX && off > 0; off *= 2) {
+    /* Be carefull about integer overflow.  */
+    for (off = 1; off < (LONG_MAX / 4) && off > 0; off *= 2) {
         apr_strfsize(off, buf);
         apr_strfsize(off + 1, buf);
         apr_strfsize(off - 1, buf);