https://bugs.llvm.org/show_bug.cgi?id=39562
Bug ID: 39562
Summary: LowerEmscriptenEHSjLj pass fails w/ emcc
WASM_OBJECT_FILES=1 when there's only longjmp
Product: libraries
Version: trunk
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Backend: WebAssembly
Assignee: unassignedb...@nondot.org
Reporter: ahee...@gmail.com
CC: llvm-bugs@lists.llvm.org
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.
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