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<a href="https://gitlab.com/debohman">David Bohman</a> created an issue: <a href="https://gitlab.com/gnutls/gnutls/-/issues/1546">#1546</a>
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<h2 dir="auto" style="font-size: 1.5em; font-weight: 600; padding-bottom: .3em; border-bottom-width: 1px; border-bottom-color: #bfbfc3; border-bottom-style: solid; color: #333238; margin: 0 0 16px;" align="initial">
<a id="user-content-description-of-problem" class="anchor" href="#description-of-problem" aria-hidden="true" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>Description of problem:</h2>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">The change in <a href="https://gitlab.com/gnutls/gnutls/-/commit/7f45a942ac8cbf299ca04dbf14c7e447f605209d" data-reference-type="commit" data-original="7f45a942" data-link="false" data-link-reference="false" data-project="179611" data-commit="7f45a942ac8cbf299ca04dbf14c7e447f605209d" data-container="body" data-placement="top" title="Make compression libraries dynamically loadable" class="gfm gfm-commit has-tooltip" style='font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; font-variant-ligatures: none; font-size: 95%; margin-top: 0;'>7f45a942</a> does not work on Darwin, since <code style='font-size: 90%; color: #1f1e24; word-wrap: break-word; background-color: #ececef; border-radius: 4px; font-weight: inherit; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; white-space: pre-wrap; overflow-wrap: break-word; word-break: keep-all; padding: 2px 4px;'>dlopen("libz.so.1", ...)</code> will not find the dynamic library. On Darwin, you need <code style='font-size: 90%; color: #1f1e24; word-wrap: break-word; background-color: #ececef; border-radius: 4px; font-weight: inherit; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; white-space: pre-wrap; overflow-wrap: break-word; word-break: keep-all; padding: 2px 4px;'>dlopen("libz.dylib", ...)</code>, so you are going to need to pass the correct string to <code style='font-size: 90%; color: #1f1e24; word-wrap: break-word; background-color: #ececef; border-radius: 4px; font-weight: inherit; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; white-space: pre-wrap; overflow-wrap: break-word; word-break: keep-all; padding: 2px 4px;'>dlopen</code> on different operating systems. I found this by inspecting the code in <code style='font-size: 90%; color: #1f1e24; word-wrap: break-word; background-color: #ececef; border-radius: 4px; font-weight: inherit; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; white-space: pre-wrap; overflow-wrap: break-word; word-break: keep-all; padding: 2px 4px;'>gnutls-3.8.4</code> and writing a test program in order to demonstrate it.</p>
<h2 dir="auto" style="font-size: 1.5em; font-weight: 600; padding-bottom: .3em; border-bottom-width: 1px; border-bottom-color: #bfbfc3; border-bottom-style: solid; color: #333238; margin: 24px 0 16px;" align="initial">
<a id="user-content-version-of-gnutls-used" class="anchor" href="#version-of-gnutls-used" aria-hidden="true" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>Version of gnutls used:</h2>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">3.8.4</p>
<h2 dir="auto" style="font-size: 1.5em; font-weight: 600; padding-bottom: .3em; border-bottom-width: 1px; border-bottom-color: #bfbfc3; border-bottom-style: solid; color: #333238; margin: 24px 0 16px;" align="initial">
<a id="user-content-distributor-of-gnutls-eg-ubuntu-fedora-rhel" class="anchor" href="#distributor-of-gnutls-eg-ubuntu-fedora-rhel" aria-hidden="true" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>Distributor of gnutls (e.g., Ubuntu, Fedora, RHEL)</h2>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">Self compile.</p>
<h2 dir="auto" style="font-size: 1.5em; font-weight: 600; padding-bottom: .3em; border-bottom-width: 1px; border-bottom-color: #bfbfc3; border-bottom-style: solid; color: #333238; margin: 24px 0 16px;" align="initial">
<a id="user-content-how-reproducible" class="anchor" href="#how-reproducible" aria-hidden="true" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>How reproducible:</h2>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">Here is the test program I used:</p>
<div class="gl-relative markdown-code-block js-markdown-code">
<pre class="code highlight js-syntax-highlight language-plaintext" v-pre="true" style='display: block; font-size: 14px; color: #333238; line-height: 1.6em; overflow-x: auto; border-radius: 4px; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; margin: 0 0 16px; padding: 12px; border: 1px solid #dcdcde;'><code style='font-size: inherit; color: inherit; word-wrap: normal; word-break: keep-all; background-color: inherit; border-radius: 4px; white-space: pre; margin-top: 0; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; overflow-wrap: normal; padding: unset;'><span id="LC1" class="line" lang="plaintext" style="margin-top: 0;">#include <stdlib.h></span>
<span id="LC2" class="line" lang="plaintext">#include <unistd.h></span>
<span id="LC3" class="line" lang="plaintext"></span>
<span id="LC4" class="line" lang="plaintext">#include <stdio.h></span>
<span id="LC5" class="line" lang="plaintext"></span>
<span id="LC6" class="line" lang="plaintext">#include <dlfcn.h></span>
<span id="LC7" class="line" lang="plaintext"></span>
<span id="LC8" class="line" lang="plaintext">int</span>
<span id="LC9" class="line" lang="plaintext">main(</span>
<span id="LC10" class="line" lang="plaintext"> int argc,</span>
<span id="LC11" class="line" lang="plaintext"> char *argv[])</span>
<span id="LC12" class="line" lang="plaintext">{</span>
<span id="LC13" class="line" lang="plaintext"> void *dl;</span>
<span id="LC14" class="line" lang="plaintext"></span>
<span id="LC15" class="line" lang="plaintext"> if (argc > 1) {</span>
<span id="LC16" class="line" lang="plaintext"> dl = dlopen(argv[1], RTLD_NOW | RTLD_GLOBAL);</span>
<span id="LC17" class="line" lang="plaintext"> if (dl != NULL) {</span>
<span id="LC18" class="line" lang="plaintext"> fprintf(stderr, "Success!\n");</span>
<span id="LC19" class="line" lang="plaintext"> pause();</span>
<span id="LC20" class="line" lang="plaintext"> }</span>
<span id="LC21" class="line" lang="plaintext"> }</span>
<span id="LC22" class="line" lang="plaintext"></span>
<span id="LC23" class="line" lang="plaintext"> exit(1);</span>
<span id="LC24" class="line" lang="plaintext">}</span></code></pre>
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<h2 dir="auto" style="font-size: 1.5em; font-weight: 600; padding-bottom: .3em; border-bottom-width: 1px; border-bottom-color: #bfbfc3; border-bottom-style: solid; color: #333238; margin: 24px 0 16px;" align="initial">
<a id="user-content-actual-results" class="anchor" href="#actual-results" aria-hidden="true" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>Actual results:</h2>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">Failure when <code style='font-size: 90%; color: #1f1e24; word-wrap: break-word; background-color: #ececef; border-radius: 4px; margin-top: 0; font-weight: inherit; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; white-space: pre-wrap; overflow-wrap: break-word; word-break: keep-all; padding: 2px 4px;'>libz.so.1</code> is passed as arg 1 to the test program. For success, I had to pass in <code style='font-size: 90%; color: #1f1e24; word-wrap: break-word; background-color: #ececef; border-radius: 4px; font-weight: inherit; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; white-space: pre-wrap; overflow-wrap: break-word; word-break: keep-all; padding: 2px 4px;'>libz.dylib</code>.</p>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">Here is the code fragment from <code style='font-size: 90%; color: #1f1e24; word-wrap: break-word; background-color: #ececef; border-radius: 4px; margin-top: 0; font-weight: inherit; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; white-space: pre-wrap; overflow-wrap: break-word; word-break: keep-all; padding: 2px 4px;'>lib/compress.c</code>:</p>
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<pre class="code highlight js-syntax-highlight language-plaintext" v-pre="true" style='display: block; font-size: 14px; color: #333238; line-height: 1.6em; overflow-x: auto; border-radius: 4px; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; margin: 0 0 16px; padding: 12px; border: 1px solid #dcdcde;'><code style='font-size: inherit; color: inherit; word-wrap: normal; word-break: keep-all; background-color: inherit; border-radius: 4px; white-space: pre; margin-top: 0; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; overflow-wrap: normal; padding: unset;'><span id="LC1" class="line" lang="plaintext" style="margin-top: 0;"> if ((_zlib_handle = dlopen("libz.so.1", RTLD_NOW | RTLD_GLOBAL)) ==</span>
<span id="LC2" class="line" lang="plaintext"> NULL)</span>
<span id="LC3" class="line" lang="plaintext"> goto error;</span></code></pre>
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<h2 dir="auto" style="font-size: 1.5em; font-weight: 600; padding-bottom: .3em; border-bottom-width: 1px; border-bottom-color: #bfbfc3; border-bottom-style: solid; color: #333238; margin: 24px 0 16px;" align="initial">
<a id="user-content-expected-results" class="anchor" href="#expected-results" aria-hidden="true" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>Expected results:</h2>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">I expected the library to be loaded correctly.</p>
<p dir="auto" style="color: #333238; margin: 0;" align="initial">See <a href="https://gitlab.com/gnutls/gnutls/-/issues/1539" data-reference-type="issue" data-original="#1539" data-link="false" data-link-reference="false" data-project="179611" data-issue="144359465" data-project-path="gnutls/gnutls" data-iid="1539" data-issue-type="issue" data-container="body" data-placement="top" title="Failing tests on macOS osx64 architecture" class="gfm gfm-issue" style="margin-top: 0;">#1539</a></p>
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