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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - fatal error: error in backend: SmallVector unable to grow. Requested capacity (4294967296) is larger than maximum value for size type (4294967295)"
href="https://bugs.llvm.org/show_bug.cgi?id=49451">49451</a>
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<th>Summary</th>
<td>fatal error: error in backend: SmallVector unable to grow. Requested capacity (4294967296) is larger than maximum value for size type (4294967295)
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Scalar Optimizations
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>haoxintu@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=24592" name="attach_24592" title="source code to reproduce the "fatal error: error in backend:" issue">attachment 24592</a> <a href="attachment.cgi?id=24592&action=edit" title="source code to reproduce the "fatal error: error in backend:" issue">[details]</a></span>
source code to reproduce the "fatal error: error in backend:" issue
Hi all.
Clang takes too much time to compile the attached source code. I am sorry I
cannot provide a reduced test program. Actually, I have tried to reduce this
test case but failed (Creduce crashes and Cvise eats all my machine's memory on
reducing this case, and I am on the way to report these issues to Creduce and
Cvise community).
The following are some information to make this issue reproduced:
$time clang -w -Os small.c
fatal error: error in backend: SmallVector unable to grow. Requested capacity
(4294967296) is larger than maximum value for size type (4294967295)
clang-13: error: clang frontend command failed with exit code 70 (use -v to see
invocation)
clang version 13.0.0 (<a href="https://github.com/llvm/llvm-project">https://github.com/llvm/llvm-project</a>
a968e7b82eac364d411c81aae58722a0b3a4b29c)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir:
/home/haoxin/haoxin-data/dut-research/compilers/llvm-project/build-20210304/bin
clang-13: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-13: note: diagnostic msg: /tmp/small-12817e.c
clang-13: note: diagnostic msg: /tmp/small-12817e.sh
clang-13: note: diagnostic msg:
********************
real 201m37.935s
user 201m24.821s
sys 0m11.131s
$time clang -w -O3 small.c
real 0m1.407s
user 0m1.371s
sys 0m0.036s
$clang -v
clang version 13.0.0 (<a href="https://github.com/llvm/llvm-project">https://github.com/llvm/llvm-project</a>
a968e7b82eac364d411c81aae58722a0b3a4b29c)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir:
/home/haoxin/haoxin-data/dut-research/compilers/llvm-project/build-20210304/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Candidate multilib: .;@m64
Selected multilib: .;@m64
Thanks,
Haoxin</pre>
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