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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Clang crash for OpenCL local void** arithmetic"
href="https://bugs.llvm.org/show_bug.cgi?id=35540">35540</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Clang crash for OpenCL local void** arithmetic
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>OpenCL
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>pjcoup@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
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<pre>On this module:
-bash-4.1$ cat t.cl
void st(int, local void *);
void process(local void ** wr) {
st(5, wr[0] + 2);
}
clang asserts with:
clang -target spir -S -emit-llvm t.cl
clang-6.0: /SCRATCH/petecoup/llvm-monorepo/llvm/lib/IR/Instructions.cpp:2565:
static llvm::CastInst* llvm::CastInst::Create(llvm::Instruction::CastOps,
llvm::Value*, llvm::Type*, const llvm::Twine&, llvm::Instruction*): Assertion
`castIsValid(op, S, Ty) && "Invalid cast!"' failed.
#0 0x00000000020a139a llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/SCRATCH/petecoup/build_monorepo/bin/clang-6.0+0x20a139a)
#1 0x000000000209f23e llvm::sys::RunSignalHandlers()
(/SCRATCH/petecoup/build_monorepo/bin/clang-6.0+0x209f23e)
#2 0x000000000209f3a2 SignalHandler(int)
(/SCRATCH/petecoup/build_monorepo/bin/clang-6.0+0x209f3a2)
#3 0x00007ffff7bcf710 __restore_rt (/lib64/libpthread.so.0+0xf710)
#4 0x00007ffff6807625 __GI_raise (/lib64/libc.so.6+0x32625)
#5 0x00007ffff6808e05 __GI_abort (/lib64/libc.so.6+0x33e05)
#6 0x00007ffff680074e __assert_fail_base (/lib64/libc.so.6+0x2b74e)
#7 0x00007ffff6800810 __GI___assert_perror_fail (/lib64/libc.so.6+0x2b810)
#8 0x0000000001ba8e57
(/SCRATCH/petecoup/build_monorepo/bin/clang-6.0+0x1ba8e57)
#9 0x000000000228ae56 llvm::IRBuilder<llvm::ConstantFolder,
clang::CodeGen::CGBuilderInserter>::CreateCast(llvm::Instruction::CastOps,
llvm::Value*, llvm::Type*, llvm::Twine const&)
(/SCRATCH/petecoup/build_monorepo/bin/clang-6.0+0x228ae56)</pre>
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