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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - LowerEmscriptenEHSjLj pass fails w/ emcc WASM_OBJECT_FILES=1 when there's only longjmp"
href="https://bugs.llvm.org/show_bug.cgi?id=39562">39562</a>
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<th>Summary</th>
<td>LowerEmscriptenEHSjLj pass fails w/ emcc WASM_OBJECT_FILES=1 when there's only longjmp
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<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Backend: WebAssembly
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>aheejin@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>When there is not setjmp call but only longjmp call in a module, such as
```
#include <setjmp.h>
struct Foo {
jmp_buf buffer;
};
__attribute__((used, visibility("default")))
void test_breakage(struct Foo *foo) {
volatile jmp_buf* jump_buffer = &foo->buffer;
longjmp(*jump_buffer, 1);
}
```
`emcc src/sjljehfail.c -O2 --profiling-funcs -o a.out.js -s
WASM_OBJECT_FILES=1` crashes with a segmentation fault.</pre>
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