use the correct format codes in warnings from gmtime/localtime

2 files changed, 47 insertions, 6 deletions

diff --git a/pp_sys.c b/pp_sys.c
index f57bd1a57f..1fe2ea978a 100644
--- a/pp_sys.c
+++ b/pp_sys.c
@@ -4505,22 +4505,22 @@ PP(pp_gmtime)
 	when = (Time64_T)now;
     }
     else {
-	double input = Perl_floor(POPn);
+	NV input = Perl_floor(POPn);
 	when = (Time64_T)input;
 	if (when != input) {
 	    Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
-			   "%s(%.0f) too large", opname, input);
+			   "%s(%.0" NVff ") too large", opname, input);
 	}
     }
 
     if ( TIME_LOWER_BOUND > when ) {
 	Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
-		       "%s(%.0f) too small", opname, when);
+		       "%s(%.0" NVff ") too small", opname, when);
 	err = NULL;
     }
     else if( when > TIME_UPPER_BOUND ) {
 	Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
-		       "%s(%.0f) too large", opname, when);
+		       "%s(%.0" NVff ") too large", opname, when);
 	err = NULL;
     }
     else {
@@ -4533,7 +4533,7 @@ PP(pp_gmtime)
     if (err == NULL) {
 	/* XXX %lld broken for quads */
 	Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
-		       "%s(%.0f) failed", opname, (double)when);
+		       "%s(%.0" NVff ") failed", opname, when);
     }
 
     if (GIMME != G_ARRAY) {	/* scalar context */
diff --git a/t/op/time.t b/t/op/time.t
index 84eaf752f3..7db8ee89ed 100644
--- a/t/op/time.t
+++ b/t/op/time.t
@@ -6,7 +6,7 @@ BEGIN {
     require './test.pl';
 }
 
-plan tests => 62;
+plan tests => 66;
 
 # These tests make sure, among other things, that we don't end up
 # burning tons of CPU for dates far in the future.
@@ -200,3 +200,44 @@ ok(gmtime() =~ /^(Sun|Mon|Tue|Wed|Thu|Fri|Sat)[ ]
     $date = localtime($small_time);
     like $warning, qr/^localtime(.*) too small/;
 }
+
+SKIP: { #rt #73040
+    # these are from the definitions of TIME_LOWER_BOUND AND TIME_UPPER_BOUND
+    my $smallest = -67768100567755200.0;
+    my $biggest = 67767976233316800.0;
+
+    # offset to a value that will fail
+    my $small_time = $smallest - 200;
+    my $big_time = $biggest + 200;
+
+    # check they're representable - typically means NV is
+    # long double
+    if ($small_time + 200 != $smallest
+	|| $small_time == $smallest
+        || $big_time - 200 != $biggest
+	|| $big_time == $biggest) {
+	skip "Can't represent test values", 4;
+    }
+    my $small_time_f = sprintf("%.0f", $small_time);
+    my $big_time_f = sprintf("%.0f", $big_time);
+
+    # check the numbers in the warning are correct
+    my $warning;
+    local $SIG{__WARN__} = sub { $warning .= join "\n", @_; };
+    $warning = '';
+    my $date = gmtime($big_time);
+    like $warning, qr/^gmtime\($big_time_f\) too large/;
+
+    $warning = '';
+    $date = localtime($big_time);
+    like $warning, qr/^localtime\($big_time_f\) too large/;
+
+    $warning = '';
+    $date = gmtime($small_time);
+    like $warning, qr/^gmtime\($small_time_f\) too small/;
+
+    $warning = '';
+    $date = localtime($small_time);
+    like $warning, qr/^localtime\($small_time_f\) too small/;
+  
+}