Submitted upstream at https://bugs.netsurf-browser.org/mantis/view.php?id=2870

--- libcss-0.9.2/test/dump.h.orig
+++ libcss-0.9.2/test/dump.h
@@ -131,7 +131,7 @@ void dump_rule_media(css_rule_media *s, char **buf, size_t *buflen)
 	char *ptr = *buf;
 	css_rule *rule;
 
-	ptr += sprintf(ptr, "| @media %s%03lx",
+	ptr += sprintf(ptr, "| @media %s%03" PRIx64,
 			s->media->negate_type ? "not " : "",
 			s->media->type);
 
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<tr><td><span title='2024-07-15 22:34:24 +0100'>2024-07-15</span></td><td><a href='/guix/commit/gnu/packages/tls.scm?id=832eec2a74c18559e996ffc9dd862cc9d08ea125'>gnu: tls: Raise conditions from target-&gt;openssl-target.</a><span class='msg-avail'>...</span></td><td>Christopher Baines</td></tr>
<tr><td><span title='2024-06-11 23:09:08 +0200'>2024-06-11</span></td><td><a href='/guix/commit/gnu/packages/tls.scm?id=a24e8de6cea9cc413eb1de5c0cc9584299a96355'>gnu: libressl: Run tests under ‘datefudge’.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2024-04-30 17:58:35 +0100'>2024-04-30</span></td><td><a href='/guix/commit/gnu/packages/tls.scm?id=f6c6dd229f8ab6e84a8ea42d3fb5fb19d24e3b20'>gnu: guile-gnutls: Update to 4.0.0.</a><span class='msg-avail'>...</span></td><td>Christopher Baines</td></tr>
<tr><td><span title='2024-02-05 13:56:37 +0800'>2024-02-05</span></td><td><a href='/guix/commit/gnu/packages/tls.scm?id=06331aec114c1f3c816a4b25a461e243c02e482b'>gnu: Add mbedtls, version 3.5.2.</a><span class='msg-avail'>...</span></td><td>Hilton Chain</td></tr>
<tr><td><span title='2024-02-05 13:56:31 +0800'>2024-02-05</span></td><td><a href='/guix/commit/gnu/packages/tls.scm?id=2b296427d7bd7b6b155e0e94403c1227ce014008'>gnu: mbedtls-apache: Rename to mbedtls-lts.</a><span class='msg-avail'>...</span></td><td>Hilton Chain</td></tr>
<tr><td><span title='2024-02-05 13:56:26 +0800'>2024-02-05</span></td><td><a href='/guix/commit/gnu/packages/tls.scm?id=0f86c1c6f887513692b4e908e21884c2705b5e82'>gnu: mbedtls-apache: Use gexps.</a><span class='msg-avail'>...</span></td><td>Hilton Chain</td></tr>
<tr><td><span title='2024-02-05 13:56:20 +0800'>2024-02-05</span></td><td><a href='/guix/commit/gnu/packages/tls.scm?id=585d71ce9695ab3d7f3f39b150bd15644a55cc44'>gnu: mbedtls-apache: Update to 2.28.7.</a><span class='msg-avail'>...</span></td><td>Hilton Chain</td></tr>
<tr><td><span title='2024-02-05 13:56:14 +0800'>2024-02-05</span></td><td><a href='/guix/commit/gnu/packages/tls.scm?id=a13a0e00ea2898402c96c8bfc5a4e911fefe2130'>gnu: mbedtls-for-hiawatha: Update package style.</a><span class='msg-avail'>...</span></td><td>Hilton Chain</td></tr>
<tr><td><span title='2024-02-05 13:56:08 +0800'>2024-02-05</span></td><td><a href='/guix/commit/gnu/packages/tls.scm?id=8dfaf461b4afd6c45d714a9494ad4fcd141aa99a'>gnu: mbedtls-for-hiawatha: Use inherited source.</a><span class='msg-avail'>...</span></td><td>Hilton Chain</td></tr>
<tr><td><span title='2024-01-20 16:52:05 -0500'>2024-01-20</span></td><td><a href='/guix/commit/gnu/packages/tls.scm?id=856b4a603ac5100be03d9c9bbd8f00dce030a79e'>gnu: gnutls: Update to 3.8.3 [security-fixes].</a><span class='msg-avail'>...</span></td><td>Jack Hill</td></tr>
<tr><td><span title='2024-01-11 11:22:36 -0500'>2024-01-11</span></td><td><a href='/guix/commit/gnu/packages/tls.scm?id=8cc0687778e92e348cb7bd61b6b444c005e9ce80'>gnu: Update guile-gnutls to 3.7.14.</a><span class='msg-avail'>...</span></td><td>David Thompson</td></tr>
<tr><td><span title='2024-01-05 13:48:37 -0500'>2024-01-05</span></td><td><a href='/guix/commit/gnu/packages/tls.scm?id=deeb7d1f53d7ddfa977b3eadd760312bbd0a2509'>gnutls: Update to 3.8.2 (fixes CVE-2023-5981).</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2024-01-04 21:48:17 +0200'>2024-01-04</span></td><td><a href='/guix/commit/gnu/packages/tls.scm?id=568c12d7266c7372f04f16bcb91cbe0f88d9e70b'>gnu: openssl: Fix building on x86_64-linux-gnux32.</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>