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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Assertion in getParamDecl on _setjmp(0)"
href="https://llvm.org/bugs/show_bug.cgi?id=22961">22961</a>
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<tr>
<th>Summary</th>
<td>Assertion in getParamDecl on _setjmp(0)
</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>
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<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>
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<th>Component</th>
<td>Frontend
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>alexfrolov1878@yandex.ru
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>$ cat test.c
void foo() {
_setjmp(0);
}
$ clang --version
clang version 3.7.0 (trunk)
Target: x86_64-unknown-linux-gnu
Thread model: posix
$ clang -c test.c
clang: llvm/tools/clang/lib/CodeGen/../../include/clang/AST/Decl.h:1931: const
clang::ParmVarDecl* clang::FunctionDecl::getParamDecl(unsigned int) const:
Assertion `i < getNumParams() && "Illegal param #"' failed.
#0 0x43a0fce llvm::sys::PrintStackTrace(llvm::raw_ostream&)
llvm/lib/Support/Unix/Signals.inc:425:0
#1 0x43a134a PrintStackTraceSignalHandler(void*)
llvm/lib/Support/Unix/Signals.inc:483:0
#2 0x439fe70 SignalHandler(int) llvm/lib/Support/Unix/Signals.inc:199:0
#3 0x378300f500 __restore_rt (/lib64/libpthread.so.0+0x378300f500)
#4 0x3782c328a5 __GI_raise (/lib64/libc.so.6+0x3782c328a5)
#5 0x3782c34085 __GI_abort (/lib64/libc.so.6+0x3782c34085)
#6 0x3782c2ba1e __assert_fail_base (/lib64/libc.so.6+0x3782c2ba1e)
#7 0x3782c2bae0 __GI___assert_perror_fail (/lib64/libc.so.6+0x3782c2bae0)
#8 0x168386d clang::FunctionDecl::getParamDecl(unsigned int) const
llvm/tools/clang/lib/CodeGen/../../include/
clang/AST/Decl.h:1932:0
#9 0x189d11a
clang::CodeGen::CodeGenFunction::EmitBuiltinExpr(clang::FunctionDecl const*,
unsigned int, clang::CallExpr const*, clang::CodeGen::ReturnValueSlot)
llvm/tools/clang/lib/CodeGen/CGBuiltin.cpp:1727:0
<...>
This seems to stem from passing an i32 0 as the parameter to __setjmp, which is
recognized as a builtin, whose parameter 0 is not really of the proper type.
The issue is reproducible since r232188.</pre>
</div>
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