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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 --- - [ms] longjmp doesn't work with /MD (or /MDd) in 64-bit binaries with optimizations"
href="http://llvm.org/bugs/show_bug.cgi?id=22421">22421</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[ms] longjmp doesn't work with /MD (or /MDd) in 64-bit binaries with optimizations
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</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>Frontend
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>nicolasweber@gmx.de
</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>D:\src\llvm-ninja-rel64>type jmp_set.cc
#include <setjmp.h>
struct Base {
virtual void vfun(int argc, char* argv[]) {};
virtual bool fail() {}
};
struct Sub : Base {
bool f(int argc, char* argv[]) {
jmp_buf buf;
if (setjmp(buf))
return fail();
int sum = 0;
for (int i = 0; i < argc; ++i)
sum += argv[i][0];
longjmp(buf, 1);
}
virtual void vfun(int argc, char* argv[]) {
f(argc, argv);
}
};
int main(int argc, char* argv[]) {
Base* b = new Sub;
b->vfun(argc, argv);
}
D:\src\llvm-ninja-rel64>bin\clang-cl -m64 jmp_set.cc /MD
jmp_set.cc(5,24) : warning: control reaches end of non-void function
[-Wreturn-type]
virtual bool fail() {}
^
1 warning generated.
D:\src\llvm-ninja-rel64>jmp_set
crashes!</pre>
</div>
</p>
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