36 lines
1.0 KiB
Diff
36 lines
1.0 KiB
Diff
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From f3ebeb35f3773b2e5523da6af25c8021816cfc06 Mon Sep 17 00:00:00 2001
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From: fvogel <fvogelnew1@free.fr>
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Date: Mon, 15 Oct 2018 14:26:50 +0000
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Subject: [PATCH 353/693] Another proposed fix for [4b555aca34]: text search
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-all hangs and eats all memory.
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---
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generic/tkText.c | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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diff --git a/generic/tkText.c b/generic/tkText.c
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index d43bef6b0..715e3c045 100644
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--- a/generic/tkText.c
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+++ b/generic/tkText.c
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@@ -5749,11 +5749,16 @@ SearchCore(
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/*
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* We only need to set the matchLength once for exact searches, and we
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* do it here. It is also used below as the actual pattern length, so
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- * it has dual purpose.
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+ * it has dual purpose. Warning: to properly advance between matches
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+ * the matchLength can't be zero (which would happen when searching
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+ * for an empty string).
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*/
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pattern = Tcl_GetString(patObj);
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matchLength = patObj->length;
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+ if (matchLength == 0) {
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+ matchLength = 1;
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+ }
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nl = strchr(pattern, '\n');
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/*
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--
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2.19.1
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