other/4520: cselib.c hash_rtx incorrectly hashes based on rtx address
dje@watson.ibm.com
dje@watson.ibm.com
Wed Oct 10 07:56:00 GMT 2001
>Number: 4520
>Category: other
>Synopsis: cselib.c hash_rtx incorrectly hashes based on rtx address
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Wed Oct 10 07:56:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator: dje@watson.ibm.com
>Release: 3.1 (experimental)
>Organization:
>Environment:
powerpc-ibm-aix4.3
>Description:
cselib.c hash_rtx hashes based on the address of a symbol
or label instead of the contents, assuming that a
symbol will be unique and only appear once. Hashing based
on the address of internal GCC data structures can produce
non-deterministic results.
>How-To-Repeat:
>Fix:
Work-around error by not applying ggc_strdup() to symbols
in rs6000.c which covers up the design mistake.
>Release-Note:
>Audit-Trail:
>Unformatted:
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