c++/2028: option -finstrument-functions breaks valid code

[schmitt@4sc.com]

>Number:         2028
>Category:       c++
>Synopsis:       option -finstrument-functions breaks valid code
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Feb 19 08:56:02 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     schmitt@4sc.com
>Release:        unknown-1.0
>Organization:
>Environment:
g++ 2.96, RH Linux 7.0 with Kernel 2.2.16-22
>Description:
when compiling a simple program with the -finstrument-functions option, the attached code doesn't
work anymore.
the function getX() returns NAN where it should return
the value x
>How-To-Repeat:
g++ -Wall -finstrument-functions -o test1 test1.cpp

as opposed to

g++ -Wall -o test1 test1.cpp
>Fix:
??? (haven't got the source of gcc, sorry)
>Release-Note:
>Audit-Trail:
>Unformatted:
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