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From: Romain GEISSLER via Libc-alpha <libc-alpha@sourceware.org>
To: libc-alpha@sourceware.org
Subject: [PATCH] Fix tst-canon-bz26341 when the glibc build current working directory is itself using symlinks
Date: Tue, 10 Aug 2021 13:01:28 +0000
Message-ID: <20210810130121.GA62219@ncerndobedev6097.etv.nce.amadeus.net>

Hi,

I am seeing test failures with tst-canon-bz26341. Using strace I found out that
the problem comes from when change the current working directory to my glibc build
directory, I use a path with is using itself symlinks. So at the beginning of the
test the "filename" variable needs to be canonicalized properly to make it pass in
these conditions.

Tested on x86-64.

Cheers,
Romain

From 99ef44560977e366c64912cfcb2a6535a0614c50 Mon Sep 17 00:00:00 2001
From: Romain Geissler <romain.geissler@amadeus.com>
Date: Tue, 10 Aug 2021 12:40:41 +0000
Subject: [PATCH] Fix tst-canon-bz26341 when the glibc build current working
 directory is itself using symlinks.

---
 stdlib/tst-canon-bz26341.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/stdlib/tst-canon-bz26341.c b/stdlib/tst-canon-bz26341.c
index acb0fd4ec30..171ec0dc45a 100644
--- a/stdlib/tst-canon-bz26341.c
+++ b/stdlib/tst-canon-bz26341.c
@@ -45,6 +45,12 @@ create_link (void)
   TEST_VERIFY_EXIT (fd != -1);
   xclose (fd);
 
+  /* Make filename a canonical path. */
+  char *saved_filename = filename;
+  filename = realpath (filename, NULL);
+  free (saved_filename);
+  TEST_VERIFY (filename != NULL);
+
   /* Create MAXLINKS symbolic links to the temporary filename.
      On exit, linkname has the last link created.  */
   char *prevlink = filename;
-- 
2.25.1


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