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[PATCH, PR 57748] Check for out of bounds access, Part 2

From: Bernd Edlinger <bernd dot edlinger at hotmail dot de>
To: Richard Biener <richard dot guenther at gmail dot com>
Cc: Martin Jambor <mjambor at suse dot cz>, GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Tue, 24 Sep 2013 04:52:18 +0200
Subject: [PATCH, PR 57748] Check for out of bounds access, Part 2
Authentication-results: sourceware.org; auth=none
References: <DUB122-W396D54115D70C9FF68A8D2E43C0 at phx dot gbl>,<CAFiYyc13uxba37WySOxXf14UVJW15_DM7jggNGbR4H2cK96Eiw at mail dot gmail dot com>,<DUB122-W323D4AAAEA1AFA890BF243E43C0 at phx dot gbl>,<CAFiYyc13wC0jmZ4xELAiL5L5Sbh0yauZWViP2hTdR+H4s0iPSw at mail dot gmail dot com>,<DUB122-W4D571A91831593BA22438E43C0 at phx dot gbl>,<CAFiYyc1ECAdBJTkcziSL_f9SQyYUPY9k19QWqkN+RfLO=i2zaQ at mail dot gmail dot com>,<20130910193228 dot GE6732 at virgil dot suse>,<DUB122-W22DAEEE94B5ED3308F6967E4390 at phx dot gbl>,<CAFiYyc3AHggjJbEmZvC_fh67o+LVpTBRdwyUv8T6EhQFE2vNWQ at mail dot gmail dot com>,<DUB122-W281E996A4885309956418EE4250 at phx dot gbl>,<CAFiYyc37ok7hde0XgiKV2uQPnOg6VzbS8QfDBjCccbvkwer54g at mail dot gmail dot com>,<CAFiYyc2SgSvVqq412Bx2yA1d7fM3RTFmHvXvUobs+jp-hUh3UA at mail dot gmail dot com>

Hi,

with the attached patch the read-side of the out of bounds accesses are fixed.
There is a single new test case pr57748-3.c that is derived from Martin's test case.
The test case does only test the read access and does not depend on part 1 of the
patch.

This patch was boot-strapped and regression tested on x86_64-unknown-linux-gnu.

Additionally I generated eCos and an eCos-application (on ARMv5 using packed
structures) with an arm-eabi cross compiler, and looked for differences in the
disassembled code with and without this patch, but there were none.

OK for trunk?


Regards
Bernd.

Attachment: changelog-pr57748-2.txt
Description: Text document

Attachment: patch-pr57748-2.diff
Description: Binary data

Follow-Ups:
- Re: [PATCH, PR 57748] Check for out of bounds access, Part 2
  - From: Richard Biener

References:
- [PATCH, PR 57748] Check for out of bounds access
  - From: Bernd Edlinger
- Re: [PATCH, PR 57748] Check for out of bounds access
  - From: Richard Biener
- Re: [PATCH, PR 57748] Check for out of bounds access
  - From: Richard Biener
- Re: [PATCH, PR 57748] Check for out of bounds access
  - From: Martin Jambor
- RE: [PATCH, PR 57748] Check for out of bounds access
  - From: Bernd Edlinger
- Re: [PATCH, PR 57748] Check for out of bounds access
  - From: Richard Biener
- RE: [PATCH, PR 57748] Check for out of bounds access
  - From: Bernd Edlinger
- Re: [PATCH, PR 57748] Check for out of bounds access
  - From: Richard Biener
- Re: [PATCH, PR 57748] Check for out of bounds access
  - From: Richard Biener

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