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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Fix build in glibc-based BSD systems"
href="https://bugs.webkit.org/show_bug.cgi?id=156533">156533</a>
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<th>Summary</th>
<td>Fix build in glibc-based BSD systems
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>Other
</td>
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<th>Hardware</th>
<td>Unspecified
</td>
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<th>OS</th>
<td>Other
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Minor
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>JavaScriptCore
</td>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>berto@igalia.com
</td>
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<p>
<div>
<pre>In MachineStackMarker.cpp there's a number of #ifdef blocks that follow this pattern:
#if OS(DARWIN)
/* ... */
#elif OS(WINDOWS)
/* ... */
#elif defined(__GLIBC__)
/* ... */
#elif OS(FREEBSD)
/* ... */
#else
#error Need a way to get the frame pointer for another thread on this platform
#endif
This works fine in most cases except in glibc-based FreeBSD systems (Debian GNU/kFreeBSD):
Source/JavaScriptCore/heap/MachineStackMarker.cpp: In member function 'void* JSC::MachineThreads::Thread::Registers::stackPointer() const':
Source/JavaScriptCore/heap/MachineStackMarker.cpp:554:68: error: 'const struct mcontext_t' has no member named 'gregs'
return reinterpret_cast<void*>((uintptr_t) regs.machineContext.gregs[REG_RSP]);
These systems should use the code inside the OS(FREEBSD) block, so this problem can be trivially solved by swapping the last two #elif blocks.</pre>
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