patch 8.2.3575: overflow check still fails when sizeof(int) == sizeof(long)v8.2.3575

Problem:    Overflow check still fails when sizeof(int) == sizeof(long).
Solution:   Use a float to check the result.

1 files changed, 9 insertions, 3 deletions

diff --git a/src/register.c b/src/register.c
index 4160c03107..0afa363eca 100644
--- a/src/register.c
+++ b/src/register.c
@@ -2011,12 +2011,18 @@ do_put(
 	    }
 
 	    do {
+#ifdef FEAT_FLOAT
+		double multlen = (double)count * (double)yanklen;
+
+		totlen = count * yanklen;
+		if ((double)totlen != multlen)
+#else
 		long multlen = count * yanklen;
 
+		// this only works when sizeof(int) != sizeof(long)
 		totlen = multlen;
-		if (count != 0 && yanklen != 0
-			&& (totlen != multlen || totlen / count != yanklen
-						 || totlen / yanklen != count))
+		if (totlen != multlen)
+#endif
 		{
 		    emsg(_(e_resulting_text_too_long));
 		    break;