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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - g_glxglvnddispatchfuncs.c and glxglvnd.c fail to build with clang 8.0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110709">110709</a>
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<th>Summary</th>
<td>g_glxglvnddispatchfuncs.c and glxglvnd.c fail to build with clang 8.0
</td>
</tr>
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<th>Product</th>
<td>Mesa
</td>
</tr>
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<th>Version</th>
<td>19.1
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>GLX
</td>
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<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>bero@lindev.ch
</td>
</tr>
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<th>QA Contact</th>
<td>mesa-dev@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Trying to build mesa 19.1.0-rc2 with clang 8.0 results in
../src/glx/g_glxglvnddispatchfuncs.c:146:47: error: passing 'const int *' to
parameter of type 'int *' discards qualifiers
[-Werror,-Wincompatible-pointer-types-discards-qualifiers]
ret = (*pChooseFBConfigSGIX)(dpy, screen, attrib_list, nelements);
^~~~~~~~~~~
../src/glx/g_glxglvnddispatchfuncs.c:237:64: error: passing 'const int *' to
parameter of type 'int *' discards qualifiers
[-Werror,-Wincompatible-pointer-types-discards-qualifiers]
ret = (*pCreateGLXPbufferSGIX)(dpy, config, width, height, attrib_list);
^~~~~~~~~~~
2 errors generated.
After "fixing" this by explicitly casting attrib_list to (int*), a similar
error occurs in glxglvnd.c:
../src/glx/glxglvnd.c:44:12: error: returning 'const void *const' from a
function with result type 'void *' discards qualifiers
[-Werror,-Wincompatible-pointer-types-discards-qualifiers]
return __glXDispatchFunctions[internalIndex];
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
This, too, can be "fixed" with an explicit cast to void* -- but of course
that's just hiding const-ness being thrown away.
The resulting mesa works fine.</pre>
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