[llvm-bugs] [Bug 43350] New: [PowerPC32] segmentation fault on C++ exception handling

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Wed Sep 18 05:03:13 PDT 2019


            Bug ID: 43350
           Summary: [PowerPC32] segmentation fault on C++ exception
           Product: lld
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: ELF
          Assignee: unassignedbugs at nondot.org
          Reporter: alfredo.junior at eldorado.org.br
                CC: llvm-bugs at lists.llvm.org, peter.smith at linaro.org

On FreeBSD powerpc64 using 32 bit compatibility libraries (LIB32), C++
exception handling is broken when application is compiled with CLANG9 and
linked with LLD9.
Same application linked with BFD 2.17 works properly:

include <iostream>
using namespace std;

int main () {
    throw 20;
  catch (int e)
    cout << "An exception occurred. Exception Nr. " << e << '\n';
  return 0;

root at alfredo-2:~/test/except # ./except32.bfd 
An exception occurred. Exception Nr. 20

root at alfredo-2:~/test/except # ./except32.lld 
Segmentation fault (core dumped)

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