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This patch differs from upstream in the following way:
* It does not add the 'ifdef' regression test.
Justification:
* Adding unnecessary dependencies (autotools) is undesirable;
* Attempting to 'autoreconf -i' (due to touched 'Makefile.am')
does not work in the current environment, failing with:
configure:7925: error: possibly undefined macro: gl_ANYTHREADLIB_EARLY
...
configure:13623: error: possibly undefined macro: gl_PTHREADLIB
configure:13708: error: possibly undefined macro: gl_WEAK_SYMBOLS
autoreconf: error: /usr/bin/autoconf failed with exit status: 1
* The next diffutils release tarball should be usable.
From ba08fbbb0ca5da455bf695236c57bc50e7faed50 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Fri, 10 Feb 2023 15:33:40 -0800
Subject: diff: fix bug where -D does not work
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Problem reported by Robert Webb (bug#61193).
* NEWS: Mention this.
* src/diff.c (main): Omit stray ‘sizeof’.
* tests/ifdef: New test.
* tests/Makefile.am (TESTS): Add it.
---
NEWS | 5 +++++
src/diff.c | 2 +-
tests/Makefile.am | 1 +
tests/ifdef | 37 +++++++++++++++++++++++++++++++++++++
4 files changed, 44 insertions(+), 1 deletion(-)
create mode 100755 tests/ifdef
diff --git a/NEWS b/NEWS
index ad9c6cc..f146730 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,11 @@ GNU diffutils NEWS -*- outline -*-
* Noteworthy changes in release ?.? (????-??-??) [?]
+** Bug fixes
+
+ diff -D no longer fails to output #ifndef lines.
+ [bug#61193 introduced in 3.9]
+
* Noteworthy changes in release 3.9 (2023-01-15) [stable]
diff --git a/src/diff.c b/src/diff.c
index dd6f63b..2b4834f 100644
--- a/src/diff.c
+++ b/src/diff.c
@@ -416,7 +416,7 @@ main (int argc, char **argv)
char *base = b;
int changes = 0;
- for (i = 0; i < sizeof sizeof C_ifdef_group_formats; i++)
+ for (i = 0; i < sizeof C_ifdef_group_formats; i++)
{
char ch = C_ifdef_group_formats[i];
switch (ch)
--
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