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<base href="https://bugs.llvm.org/">
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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 - Bad exception handling with g++/MinGW"
href="https://bugs.llvm.org/show_bug.cgi?id=42217">42217</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Bad exception handling with g++/MinGW
</td>
</tr>
<tr>
<th>Product</th>
<td>lld
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows XP
</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>COFF
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>orgads@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>When building with g++ and lld, an exception that is thrown from a ctor is not
properly caught.
This works fine on linux with both g++ and clang, and on MinGW with clang.
$ cat ex.cpp
#include <iostream>
struct exception {};
struct Foo { Foo() { throw exception(); } };
static void func() { throw exception(); }
int main()
{
try {
func();
} catch(exception &ex) { std::cout << "Caught from func" << std::endl; }
try {
Foo tmp;
} catch(exception &ex) { std::cout << "Caught from ctor" << std::endl; }
return 0;
}
$ clang++ -fuse-ld=lld -o ex.exe main.cpp
$ ./ex
Caught from func
Caught from ctor
$ g++ -fuse-ld=lld -o ex.exe main.cpp
$ ./ex
Caught from func
terminate called after throwing an instance of 'exception'</pre>
</div>
</p>
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