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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - lld-linked Chromium Framework can't be dlopen()ed on arm"
href="https://bugs.llvm.org/show_bug.cgi?id=50411">50411</a>
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<th>Summary</th>
<td>lld-linked Chromium Framework can't be dlopen()ed on arm
</td>
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<th>Product</th>
<td>lld
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>MachO
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
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<th>Reporter</th>
<td>nicolasweber@gmx.de
</td>
</tr>
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<th>CC</th>
<td>gkm@fb.com, jezreel@gmail.com, llvm-bugs@lists.llvm.org, smeenai@fb.com
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<p>
<div>
<pre>Trying to get Chromium linked with lld on mac on arm now that the jump island
patch is in. This is the first crash; we don't even get to the real entry
point.
Repro:
<a href="https://drive.google.com/file/d/1mTSeMEHaqtcc8XWSea91OyvApN4U_r0A/view?usp=sharing">https://drive.google.com/file/d/1mTSeMEHaqtcc8XWSea91OyvApN4U_r0A/view?usp=sharing</a>
% ld @response.txt
Write a small loader (have to run this on an M1 machine since the repro
produces an arm image; almost everything is fine on intel)):
% cat main.cc
#include <dlfcn.h>
int main() {
void* library = dlopen("Chromium Framework",
RTLD_LAZY | RTLD_LOCAL | RTLD_FIRST);
if (!library)
return 1;
void* main = dlsym(library, "ChromeMain");
if (!main)
return 2;
}
% clang main.cc
% ./a.out ; echo $?
0
Works with ld64. But with lld:
% ~/src/llvm-project/out/gn/bin/ld64.lld @response.txt
ld64.lld: warning: Option `-dead_strip' is not yet implemented. Stay tuned...
% ./a.out ; echo $?
1
check-clang works fine with lld as host linker (even in a debug build where
clang is 455M so the branch islands generally seem to work and might not be
related) so things _generally_ work.</pre>
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