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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [GTK] [STABLE] JSC JIT Broken on ARMv7 Traditional (without Thumb2)"
href="https://bugs.webkit.org/show_bug.cgi?id=159880">159880</a>
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<th>Summary</th>
<td>[GTK] [STABLE] JSC JIT Broken on ARMv7 Traditional (without Thumb2)
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<th>Classification</th>
<td>Unclassified
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<th>Product</th>
<td>WebKit
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<th>Version</th>
<td>WebKit Nightly Build
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<th>Hardware</th>
<td>Unspecified
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<th>OS</th>
<td>Unspecified
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>Normal
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>JavaScriptCore
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>clopez@igalia.com
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<th>CC</th>
<td>berto@igalia.com, bugs-noreply@webkitgtk.org, ossy@webkit.org, tpopela@redhat.com, zan@falconsigh.net
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<pre>When building WebKitGTK+ for ARMv7 (armhf) with traditional ARM intruction set (-marm) instead of building with Thumb2 instruction set (-mthumb) the JSC JIT fails at run-time. It builds fine, but then any webpage with JavaScript will make the WebProcess crash.
I have been able to reproduce this with 2.12.3. Not sure if its reproducible with current trunk, I will try to reproduce it there also.
It seems that GNU/Linux armhf distributions build with Thumb2 (-mthumb) by default. At least on Debian the default toolchain (gcc compiler) is built with --with-mode=thumb on armhhf. Therefore the GTK+ ARM buildbot (that runs on Debian) is only testing the ARMv7 Thumb2 build.
Related: <a href="https://bugzilla.yoctoproject.org/show_bug.cgi?id=9474">https://bugzilla.yoctoproject.org/show_bug.cgi?id=9474</a></pre>
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