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From: "i.kerseymer at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/16687] New: GDB Reports Incorrect Hexadecimal Value when
 adding floats
Date: Tue, 11 Mar 2014 04:58:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=16687

            Bug ID: 16687
           Summary: GDB Reports Incorrect Hexadecimal Value when adding
                    floats
           Product: gdb
           Version: 7.4
            Status: NEW
          Severity: normal
          Priority: P2
         Component: c++
          Assignee: unassigned at sourceware dot org
          Reporter: i.kerseymer at gmail dot com

Created attachment 7462
  --> https://sourceware.org/bugzilla/attachment.cgi?id=7462&action=edit
Example

#include <stdio.h>

float value = 3.1415 + 299792458;

int main()
{

    fprintf(stdout, "Value is %f\n", value);

    return 0;
}


this program, when not compiled with -g flag reports "sum" as being ==
0x4d8ef3c2

with -g flag, it reports it as being == 0x11de7840

all you need to run is $ p/x value to see the behavior

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