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<a href="https://gitlab.rtems.org/eagleirony">Aaron Nyholm</a> created an issue: <a href="https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5349">#5349</a>
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<a href="#summary" aria-hidden="true" class="anchor" id="user-content-summary" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Summary</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">JFFS2 has two pathways to print. Through <code style='font-size: 90%; color: #18171d; word-wrap: break-word; border-radius: .25rem; background-color: #ececef; margin-top: 0; font-weight: inherit; white-space: break-spaces; overflow-wrap: break-word; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: keep-all; padding: 0.125rem 0.25rem;'>pr_xxx</code> (e.g. <code style='font-size: 90%; color: #18171d; word-wrap: break-word; border-radius: .25rem; background-color: #ececef; font-weight: inherit; white-space: break-spaces; overflow-wrap: break-word; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: keep-all; padding: 0.125rem 0.25rem;'>pr_warn</code>) and enabling <code style='font-size: 90%; color: #18171d; word-wrap: break-word; border-radius: .25rem; background-color: #ececef; font-weight: inherit; white-space: break-spaces; overflow-wrap: break-word; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: keep-all; padding: 0.125rem 0.25rem;'>CONFIG_JFFS2_FS_DEBUG</code> in <code style='font-size: 90%; color: #18171d; word-wrap: break-word; border-radius: .25rem; background-color: #ececef; font-weight: inherit; white-space: break-spaces; overflow-wrap: break-word; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: keep-all; padding: 0.125rem 0.25rem;'>jffs2/src/debug.h</code>. <code style='font-size: 90%; color: #18171d; word-wrap: break-word; border-radius: .25rem; background-color: #ececef; font-weight: inherit; white-space: break-spaces; overflow-wrap: break-word; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: keep-all; padding: 0.125rem 0.25rem;'>CONFIG_JFFS2_FS_DEBUG</code> is off by default while all <code style='font-size: 90%; color: #18171d; word-wrap: break-word; border-radius: .25rem; background-color: #ececef; font-weight: inherit; white-space: break-spaces; overflow-wrap: break-word; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: keep-all; padding: 0.125rem 0.25rem;'>pr_xxx</code> but <code style='font-size: 90%; color: #18171d; word-wrap: break-word; border-radius: .25rem; background-color: #ececef; font-weight: inherit; white-space: break-spaces; overflow-wrap: break-word; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: keep-all; padding: 0.125rem 0.25rem;'>pr_debug</code> are enabled and cannot be disabled.</p>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">This results in some messages being printed without a method to disable them. The easiest method to reproduce this by mounting a corrupted JFFS2 filesystem.</p>
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<pre class="code highlight js-syntax-highlight language-plaintext" v-pre="true" style='display: block; font-size: 14px; color: #3a383f; line-height: 1.6em; overflow-x: auto; border-radius: .25rem; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; margin: 0 0 1rem; padding: 12px; border: 1px solid #dcdcde;'><code style='font-size: inherit; color: inherit; word-wrap: normal; word-break: keep-all; border-radius: .25rem; background-color: inherit; white-space: pre; margin-top: 0; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; overflow-wrap: normal; padding: unset;'><span id="LC1" class="line" lang="plaintext" style="margin-top: 0;"><4>JFFS2: Empty flash at 0x0076b824 ends at 0x0076b828</span>
<span id="LC2" class="line" lang="plaintext"><5>JFFS2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0077000c: 0x0400 instead</span>
<span id="LC3" class="line" lang="plaintext"><5>JFFS2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00770014: 0x0008 instead</span>
<span id="LC4" class="line" lang="plaintext"><5>JFFS2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0077001c: 0x172a instead</span>
<span id="LC5" class="line" lang="plaintext">...</span></code></pre>
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<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Alternatively, when debug messages are enabled multiple compile errors are produced</p>
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<pre class="code highlight js-syntax-highlight language-plaintext" v-pre="true" style='display: block; font-size: 14px; color: #3a383f; line-height: 1.6em; overflow-x: auto; border-radius: .25rem; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; margin: 0 0 1rem; padding: 12px; border: 1px solid #dcdcde;'><code style='font-size: inherit; color: inherit; word-wrap: normal; word-break: keep-all; border-radius: .25rem; background-color: inherit; white-space: pre; margin-top: 0; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; overflow-wrap: normal; padding: unset;'><span id="LC1" class="line" lang="plaintext" style="margin-top: 0;">../../../cpukit/libfs/src/jffs2/src/debug.c:162:6: error: no previous prototype for '__jffs2_dbg_superblock_counts' [-Werror=missing-prototypes]</span>
<span id="LC2" class="line" lang="plaintext"> 162 | void __jffs2_dbg_superblock_counts(struct jffs2_sb_info *c)</span>
<span id="LC3" class="line" lang="plaintext"> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span>
<span id="LC4" class="line" lang="plaintext">cc1: all warnings being treated as errors</span>
<span id="LC5" class="line" lang="plaintext"></span>
<span id="LC6" class="line" lang="plaintext">In file included from ../../../cpukit/libfs/src/jffs2/src/nodelist.h:484,</span>
<span id="LC7" class="line" lang="plaintext"> from ../../../cpukit/libfs/src/jffs2/src/fs-rtems.c:23:</span>
<span id="LC8" class="line" lang="plaintext">../../../cpukit/libfs/src/jffs2/src/fs-rtems.c: In function 'icache_evict':</span>
<span id="LC9" class="line" lang="plaintext">../../../cpukit/libfs/src/jffs2/src/fs-rtems.c:76:12: error: implicit declaration of function 'printf' [-Werror=implicit-function-declaration]</span>
<span id="LC10" class="line" lang="plaintext"> 76 | D2(printf("icache_evict\n"));</span>
<span id="LC11" class="line" lang="plaintext"> | ^~~~~~</span>
<span id="LC12" class="line" lang="plaintext">../../../cpukit/libfs/src/jffs2/src/debug.h:62:15: note: in definition of macro 'D2'</span>
<span id="LC13" class="line" lang="plaintext"> 62 | #define D2(x) x</span>
<span id="LC14" class="line" lang="plaintext"> | ^</span>
<span id="LC15" class="line" lang="plaintext">../../../cpukit/libfs/src/jffs2/src/fs-rtems.c:34:1: note: include '<stdio.h>' or provide a declaration of 'printf'</span>
<span id="LC16" class="line" lang="plaintext"> 33 | #include <rtems/sysinit.h></span>
<span id="LC17" class="line" lang="plaintext"> +++ |+#include <stdio.h></span>
<span id="LC18" class="line" lang="plaintext"> 34 |</span>
<span id="LC19" class="line" lang="plaintext">...</span></code></pre>
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<p dir="auto" style="color: #3a383f; margin: 0;" align="initial">These are largely due to the outdated port from Linux and improper handling of translating debug from Linux to RTEMS.</p>
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