With leak sanitizer on, the test for getdelim fails due to a memory leak. The attached patch fixes it. (Please feel free to amend.)
Regards, Tim
Output from config.log:
configure:26259: checking for working getdelim function
configure:26325: gcc-10 -o conftest -O1 -g -fno-omit-frame-pointer
-DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION -fsanitize
=undefined,bool,alignment,null,enum,address,leak,nonnull-attribute
-fno-sanitize-recover=all -fsanitize-address-use-afte
r-scope conftest.c >&5
configure:26325: $? = 0
configure:26325: ./conftest
=================================================================
==551573==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 120 byte(s) in 1 object(s) allocated from:
#0 0x7fb818f56e8f in malloc
(/usr/lib/x86_64-linux-gnu/libasan.so.6+0xa9e8f)
#1 0x7fb8183f51bf in _IO_getdelim
/build/glibc-WZtAaN/glibc-2.30/libio/iogetdelim.c:62
#2 0x7fb8198dd72f (<unknown module>)
SUMMARY: AddressSanitizer: 120 byte(s) leaked in 1 allocation(s).
configure:26325: $? = 1
configure: program exited with status 1
From 0b9451c7c8919121df67b71fdd2f993605c1abc1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tim=20R=C3=BChsen?= <tim.rueh...@gmx.de>
Date: Mon, 18 May 2020 12:36:16 +0200
Subject: [PATCH] Fix memleak in getdelim C code to pacify leak sanitizer
---
ChangeLog | 4 ++++
m4/getdelim.m4 | 3 ++-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/ChangeLog b/ChangeLog
index 9551d9934..2f7d6d4bb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2020-05-18 Tim Rühsen <tim.ruehsenqgmx.de>
+
+ * m4/getdelim.m4: Fix memleak.
+
2020-05-17 Bruno Haible <br...@clisp.org>
Clarify intended usage of the license file modules.
diff --git a/m4/getdelim.m4 b/m4/getdelim.m4
index 9f4c7f6e9..ac3917b11 100644
--- a/m4/getdelim.m4
+++ b/m4/getdelim.m4
@@ -1,4 +1,4 @@
-# getdelim.m4 serial 14
+# getdelim.m4 serial 15
dnl Copyright (C) 2005-2007, 2009-2020 Free Software Foundation, Inc.
dnl
@@ -42,6 +42,7 @@ AC_DEFUN([gl_FUNC_GETDELIM],
int len = getdelim (&line, &siz, '\n', in);
if (!(len == 4 && line && strcmp (line, "foo\n") == 0))
{ free (line); fclose (in); return 2; }
+ free (line);
}
{
/* Test result for a NULL buffer and a non-zero size.
--
2.26.2
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