Erronous warning in g++ compile

["Preston A. Elder" <prez at antisocial dot com>]

Please try compiling this file with:

g++ -Wall -O -c compiler_error.cpp

For some reason, it tells me that I reach the end of a non-void function
without returning a value, when I obviously do.  This does NOT occur if
I turn off optimization, or use -fno-default-inline.
This works with any class I've tested inside the vector.  I've commented
the file well to highlight the error.

The GCC version I use is 2.95.2 19991024
The platform is Linux 2.4.x (i486-suse-linux).

Just thought you would like to know this warning is triggering erronously.

Thanks,

-- 
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/* Proof of bug in compiler ...
 *
 * The below will cause a 'reaches end of non-void function' warning when
 * a class is used in the vector definition, and ANY inlining is done.
 * This means any optimization is on, and -fno-default-inline is NOT
 * defined.  This code should NOT cause any warning.
 *
 * NOTE: This only occurs when the return is in {}'s, however there are
 * times (for example when you want to #define a special return that does
 * more than one thing, but still be able to use it after an if without
 * having to put {}'s around it yourself) when you would want to put the
 * return in {}'s (like I have done in my project that found this error).
 *
 * Also note, -Wall should be used in the compiler options to show up
 * the problem.
 *
 * Bug found by Preston A. Elder <prez@antisocial.com>
 */

#include <vector>

class SomeClass {};

int SomeFunc()
{
    vector<SomeClass> blah;

    { return 0; }
}