From 15ddf2941dd798308ff25159133b0b2c9b1ea8f4 Mon Sep 17 00:00:00 2001
From: Mateusz Guzik <mjguzik@gmail.com>
Date: Thu, 18 Aug 2022 10:57:07 +0000
Subject: [PATCH] stackcollapse-pmc.pl: fix uninitialized value warn on empty
 input

.. and apparently reduce memory usage.
---
 stackcollapse-pmc.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stackcollapse-pmc.pl b/stackcollapse-pmc.pl
index c78fb96c..5bd7c2da 100755
--- a/stackcollapse-pmc.pl
+++ b/stackcollapse-pmc.pl
@@ -59,7 +59,7 @@
 my $prev_count;
 my $prev_indent = -1;
 
-foreach (<>) {
+while (defined($_ = <>)) {
 	if (m/^( *)[0-9.]+%  \[([0-9]+)\]\s*(\S+)/) {
 		my $indent = length($1);
 		if ($indent <= $prev_indent) {