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From: "anton.katilin at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/55339] Generated code hangs with -O2 on Linux ppc
Date: Thu, 15 Nov 2012 11:28:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55339

--- Comment #1 from anton.katilin at gmail dot com 2012-11-15 11:28:32 UTC ---
Compile with:
-------------------------------------

export PATH=/opt/gcc-4.7.2/bin:$PATH

g++ -m32 -fPIC -O2 *.cpp -o test-O2.bin
g++ -m32 -fPIC -O1 *.cpp -o test-O1.bin



Please find the source code of the test below.

-------------------------------------
Test.cpp
-------------------------------------

#include <stdio.h>

#include "Foo.h"

int main() {
  try {
    printf("entering...\n");
    fflush(stdout);

    YS(-1); // will throw exception

    printf("must never reach\n");
  }
  catch (int) {
    printf("exception caught, as expected\n");
  }

  printf("OK\n");

  return 0;
}


-------------------------------------
Foo.h
-------------------------------------

#pragma once

void foo();

void checkPositive(int);

class YS {
public:
  YS(int capacity) {
    checkPositive(capacity);
  }

  ~YS() {
    foo();
  }
};

void throwException(const YS&);


-------------------------------------
Foo.cpp
-------------------------------------

#include "Foo.h"

void foo() {
}

void checkPositive(int v) {
  if (v <= 0) {
    throwException(10);
  }
}

void throwException(const YS&) {
  throw int(1);
}