improve suppressions to avoid default suppressions w/ mod+offs

[derekbruening]

From bruen...@google.com on January 10, 2012 15:09:46

from older notes:

mod+offs is really for end users and not as easy to use in default supp b/c we
need to cover all versions of the dll -- though w/ a leak something like issue #498
can't be used so w/o some auto-symbol-acquisition solution which has its own
problems there's no simple solution.

in issue #446 text:
xref issue #475 and issue #504 where for the first time a default suppression has to
use mod+offs (for rsaenh.dll)

issue #498 actually enabled me to remove the issue #504 mod+offs suppression

for leaks, to avoid mod+offs and yet not be too general:

• could allow specifying the size of the leak
• specify offset from start for possible leak
• xref issue Add a mod!... syntax for suppressing any number of frames within a module #738 for any # frames in one module

Original issue: http://code.google.com/p/drmemory/issues/detail?id=741

[derekbruening]

From bruen...@google.com on January 10, 2012 12:12:01

• xref issue Suppressions should support field which limits the number of reports it can suppress #720 to limit risk by limiting # matches

[derekbruening]

From bruen...@google.com on January 10, 2012 12:19:13

xref issue #446 (also mentioned above) proposal to have tool that downloads symbols for everything in results.txt and for this in the default supp file