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<body><span class="vcard"><a class="email" href="mailto:bztemail@gmail.com" title="bzt <bztemail@gmail.com>"> <span class="fn">bzt</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED WONTFIX - Optimizing to library calls with -ffreestanding and -O0"
href="https://bugs.llvm.org/show_bug.cgi?id=38455">bug 38455</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>WONTFIX
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED WONTFIX - Optimizing to library calls with -ffreestanding and -O0"
href="https://bugs.llvm.org/show_bug.cgi?id=38455#c10">Comment # 10</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED WONTFIX - Optimizing to library calls with -ffreestanding and -O0"
href="https://bugs.llvm.org/show_bug.cgi?id=38455">bug 38455</a>
from <span class="vcard"><a class="email" href="mailto:bztemail@gmail.com" title="bzt <bztemail@gmail.com>"> <span class="fn">bzt</span></a>
</span></b>
<pre>Hi Tim,
I've made peace with clang not supporting some gcc features. I believe what
caused the problem is the undocumented -nolibc argument, somehow implied by
-nostartfiles (more precisely it's only documented for the GNU ld, but clearly
gcc won't generate calls to memcpy, memset etc. when used, therefore the issue
maybe not related to -ffreestanding).
I decided to go on with workarounds: I've implemented those memory functions
for all the architectures I work with, and now that I don't have linking
errors, and I don't care why memset is called in my meminit, everything is
working just fine (and there's no __builtin_trap() either with -O0). I have to
debug my run-time linker though, because lld generates a little bit different
ELF structures than GNU ld. But I'm sure that's on me, as I have made some
GNU-specific assumption in my code I was unaware of.
Anyway, I'd like to say thanks again for your help, and I think we can safely
close this issue.
Cheers,
bzt</pre>
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