[Bug c++/52956] New: Missing overflow warning

[xinliangli at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52956

             Bug #: 52956
           Summary: Missing overflow warning
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: xinlian...@gmail.com


static const long long
  DiskCacheSize = 8 << 30; // 8 Gigs

/*

overflow.cpp:1:42: warning: signed shift result (0x200000000) requires 35
bits to represent, but 'int' only has 32 bits [-Wshift-overflow]
static const long long DiskCacheSize = 8 << 30; // 8 Gigs
                                      ~ ^  ~~
1 warning generated.

*/