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Bug#119440: marked as done (g++: Compiler does not give any errors when a function fails to return required value)



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From: "Eray Ozkural (exa)" <erayo@cs.bilkent.edu.tr>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: g++: Compiler does not give any errors when a function fails to return required value
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Package: g++
Version: 2:2.95.4-8
Severity: normal

In a member function such as:
int Partition::in_which_part()
{
  int i;
  ....
}

A return statement with type of int is required. However, the compiler
fails to give any error/warning when the corresponding return statement
is omitted, when invoked with default options.

In the current case, the compiler does not even give a warning message
by default. Giving an error message might break valid C++ code (which
I'm not sure of) but it seems that when you specify -Wall the compiler
will detect whether
src/generic/Utility.hxx:173: warning: control reaches end of non-void function `Utility::operator <<<int, less<int> >(ostream &, const set<int,less<int>,allocator<int> > &)'

I think this should be the default behavior, which may be suppressed
with a flag if desired.

Thanks,

-- System Information
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux orion 2.4.7 #1 Tue Jul 31 12:20:28 EEST 2001 i686
Locale: LANG=C, LC_CTYPE=C

Versions of packages g++ depends on:
ii  cpp                    2:2.95.4-8        The GNU C preprocessor.
ii  g++-2.95               1:2.95.4-0.011006 The GNU C++ compiler.
ii  gcc-2.95               1:2.95.4-0.011006 The GNU C compiler.


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From: "Eray Ozkural (exa)" <erayo@cs.bilkent.edu.tr>
Organization: Bilkent University CS Dept.
To: 119440-done@bugs.debian.org
Subject: closing this one
Date: Wed, 14 Nov 2001 00:28:30 +0200
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thanks,

- -- 
Eray Ozkural (exa) <erayo@cs.bilkent.edu.tr>
Comp. Sci. Dept., Bilkent University, Ankara
www: http://www.cs.bilkent.edu.tr/~erayo
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