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<base href="http://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - ICE in alpha.core.IdenticalExpr : Assertion `BitWidth == RHS.BitWidth"
href="http://llvm.org/bugs/show_bug.cgi?id=20659">20659</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>ICE in alpha.core.IdenticalExpr : Assertion `BitWidth == RHS.BitWidth
</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>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Static Analyzer
</td>
</tr>
<tr>
<th>Assignee</th>
<td>kremenek@apple.com
</td>
</tr>
<tr>
<th>Reporter</th>
<td>dimhen@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>$ /usr/local/llvm/bin/clang -v
clang version 3.6.0 (trunk 215617)
Target: x86_64-unknown-linux-gnu
Thread model: posix
Found candidate GCC installation: /usr/lib/gcc/i686-redhat-linux/4.8.3
Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.8.3
Selected GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.8.3
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64
$ cat x.i
int a, b;
long c;
int fn1() {
goto done;
if (0) {
b -= a;
c = 0;
} else {
b -= a;
c = 0xFFFFFFFFFFFFFFFF;
}
done:
return 0;
}
$ /usr/local/llvm/bin/clang -cc1 -analyze -analyzer-checker
alpha.core.IdenticalExpr -x c x.i
clang: /home/dimhen/src/llvm/include/llvm/ADT/APInt.h:969: bool
llvm::APInt::operator==(const llvm::APInt&) const: Assertion `BitWidth ==
RHS.BitWidth && "Comparison requires equal bit widths"' failed.
0 clang 0x000000000204cbb2 llvm::sys::PrintStackTrace(_IO_FILE*) +
34
1 clang 0x000000000204c7d4
2 libpthread.so.0 0x0000003998c0f750
3 libc.so.6 0x0000003998835c39 gsignal + 57
4 libc.so.6 0x0000003998837348 abort + 328
5 libc.so.6 0x000000399882eb96
6 libc.so.6 0x000000399882ec42
7 clang 0x0000000000e91aa5
8 clang 0x0000000000e90f96
9 clang 0x0000000000e90f96
10 clang 0x0000000000e91524
11 clang 0x0000000000e91ed1
12 clang 0x0000000000e979e7
13 clang 0x0000000000e92c3d
14 clang 0x0000000000e94c2f
15 clang 0x0000000000e932ad
16 clang 0x0000000000e98ca5
17 clang 0x0000000000e9a40b
18 clang 0x0000000000fa891d
clang::ento::CheckerManager::runCheckersOnASTBody(clang::Decl const*,
clang::ento::AnalysisManager&, clang::ento::BugReporter&) + 125
19 clang 0x0000000000e55922
20 clang 0x0000000000e61c36
21 clang 0x0000000000e575ea
22 clang 0x0000000000e62aed
23 clang 0x00000000009e1303 clang::ParseAST(clang::Sema&, bool, bool)
+ 483
24 clang 0x00000000006930b6 clang::FrontendAction::Execute() + 118
25 clang 0x00000000006710c0
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 320
26 clang 0x00000000006593be
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 2014
27 clang 0x0000000000650560 cc1_main(char const**, char const**, char
const*, void*) + 1040
28 clang 0x0000000000657ff6 main + 8070
29 libc.so.6 0x0000003998821d65 __libc_start_main + 245
30 clang 0x000000000064f2c9
Stack dump:
0. Program arguments: /usr/local/llvm/bin/clang -cc1 -analyze
-analyzer-checker alpha.core.IdenticalExpr -x c x.i
1. <eof> parser at end of file
Aborted (core dumped)</pre>
</div>
</p>
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