[Bug c++/43344] New: -Wunreachable-code incorrect warning

[Bug c++/43344] New: -Wunreachable-code incorrect warning

[jiri dot engelthaler at zat dot cz]

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By adding a destructor to main class to example in the bug 21228
(http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21228) will produce incorrect
warning about code that "will never be executed"

# g++  -Wunreachable-code gstest.cpp
gstest.cpp: In constructor ‘testString::testString()’:
gstest.cpp:24: warning: will never be executed
gstest.cpp: In constructor ‘testString::testString()’:
gstest.cpp:24: warning: will never be executed

#cat gstest.cpp
// #include <stdio.h>

class testStringBase
{
public:
  ~testStringBase();
  char *stringPtr;
};

testStringBase::~testStringBase()
{
  stringPtr = 0;
}

class testString : public testStringBase
{
public:
  testString();
};

testString::testString()
{
  stringPtr = (char *) 9;
}

int main(int argc, char **argv) {
  testString s;
  //  printf("s.stringPtr is %ld\n", (unsigned long) s.stringPtr);
}


-- 
           Summary: -Wunreachable-code incorrect warning
           Product: gcc
           Version: 4.4.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jiri dot engelthaler at zat dot cz


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43344

[Bug c++/43344] -Wunreachable-code incorrect warning

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2010-03-12 12:29 -------
-Wunreachable-code is broken and has been removed from GCC 4.5.  Do not use it.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |WONTFIX
            Summary|-Wunreachable-code incorrect|-Wunreachable-code incorrect
                   |warning                     |warning


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43344