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Fix #1971, avoid alias warning on some compilers #1972

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jphickey
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Describe the contribution
Use an intermediate variable of type CFE_ES_MemPoolBuf_t to store the address, which avoids an alias warning.

Fixes #1971

Testing performed
Build with strict flags (-O3 -fstrict-aliasing -Wstrict-aliasing=2) on GCC 10.3.

Expected behavior changes
Builds clean (no warning)

System(s) tested on
Ubuntu 21.04

Contributor Info - All information REQUIRED for consideration of pull request
Joseph Hickey, Vantage Systems, Inc.

Use an intermediate variable of type CFE_ES_MemPoolBuf_t to store
the address.
@jphickey jphickey added the CCB:Ready Ready for discussion at the Configuration Control Board (CCB) label Sep 21, 2021
@astrogeco
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@skliper should I merge this into the current IC?

@astrogeco astrogeco removed the CCB:Ready Ready for discussion at the Configuration Control Board (CCB) label Sep 22, 2021
@astrogeco astrogeco changed the base branch from main to integration-candidate September 22, 2021 14:10
@astrogeco astrogeco merged commit 02cb5db into nasa:integration-candidate Sep 22, 2021
astrogeco added a commit that referenced this pull request Sep 22, 2021
Fix #1971, avoid alias warning on some compilers
@astrogeco
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Had to rebase IC after merge so merge commit is now 87120fb

astrogeco added a commit to astrogeco/cFS that referenced this pull request Sep 22, 2021
**Combines**

nasa/cFE#1967 v6.8.0-rc1+dev1024

nasa/osal#1158 v5.1.0-rc1+dev619

nasa/sch_lab#92 v2.4.0-rc1+dev53

nasa/sample_app#155 v1.2.0-rc1+dev73

nasa/to_lab#105 v2.4.0-rc1+dev58

nasa/ci_lab#93 v2.4.0-rc1+dev46

**Includes:**

*cFE*

nasa/cFE#1948, Update name of macros/functions added to "cfe_assert"

nasa/cFE#1950, Fix Mismatch between MSG API and test case in "TestMsgId" functional test

nasa/cFE#1962, Single time domain in functional time tests

nasa/cFE#1943, add missing inclusions in CFE API headers

nasa/cFE#1964, Use existing /ram for FS header test

nasa/cFE#1956, Add static local to function test so data section is nonzero

nasa/cFE#1960, Make invalid buffer length consistent in es task test

nasa/cFE#1953, Only check base filename in library info functional

nasa/cFE#1970, Confirm sb/time reset requirements in coverage test

nasa/cFE#1947, Fix broken link in App Developers Guide

nasa/cFE#1972, Fix #1971, avoid alias warning on some compilers

*osal*

nas/osal#1149, Enable symbol api test and MIR dump too large

nasa/osal#1152, Fix OSAL loader test hard fails if size exceeded

nasa/osal#1155, add bsp-specific configuration flag registry

nasa/osal#1157, Add os-specifc socket flag function

*Apps*

nasa/ci_lab#92, Apply CFE_SB_ValueToMsgId where required

nasa/sample_app#154, Apply CFE_SB_ValueToMsgId where required

nasa/sch_lab#91, Apply CFE_SB_ValueToMsgId where required

nasa/to_lab#104, Apply CFE_SB_ValueToMsgId where required

Co-authored-by: Jacob Hageman   <skliper@users.noreply.github.com>
Co-authored-by: Joseph Hickey   <jphickey@users.noreply.github.com>
Co-authored-by: Adrien Chardon  <nodraak@users.noreply.github.com>
astrogeco added a commit to nasa/cFS that referenced this pull request Sep 22, 2021
**Combines**

nasa/cFE#1967 v6.8.0-rc1+dev1024

nasa/osal#1158 v5.1.0-rc1+dev619

nasa/sch_lab#92 v2.4.0-rc1+dev53

nasa/sample_app#155 v1.2.0-rc1+dev73

nasa/to_lab#105 v2.4.0-rc1+dev58

nasa/ci_lab#93 v2.4.0-rc1+dev46

**Includes:**

*cFE*

nasa/cFE#1948, Update name of macros/functions added to "cfe_assert"

nasa/cFE#1950, Fix Mismatch between MSG API and test case in "TestMsgId" functional test

nasa/cFE#1962, Single time domain in functional time tests

nasa/cFE#1943, add missing inclusions in CFE API headers

nasa/cFE#1964, Use existing /ram for FS header test

nasa/cFE#1956, Add static local to function test so data section is nonzero

nasa/cFE#1960, Make invalid buffer length consistent in es task test

nasa/cFE#1953, Only check base filename in library info functional

nasa/cFE#1970, Confirm sb/time reset requirements in coverage test

nasa/cFE#1947, Fix broken link in App Developers Guide

nasa/cFE#1972, Fix #1971, avoid alias warning on some compilers

*osal*

nas/osal#1149, Enable symbol api test and MIR dump too large

nasa/osal#1152, Fix OSAL loader test hard fails if size exceeded

nasa/osal#1155, add bsp-specific configuration flag registry

nasa/osal#1157, Add os-specifc socket flag function

*Apps*

nasa/ci_lab#92, Apply CFE_SB_ValueToMsgId where required

nasa/sample_app#154, Apply CFE_SB_ValueToMsgId where required

nasa/sch_lab#91, Apply CFE_SB_ValueToMsgId where required

nasa/to_lab#104, Apply CFE_SB_ValueToMsgId where required

Co-authored-by: Jacob Hageman   <skliper@users.noreply.github.com>
Co-authored-by: Joseph Hickey   <jphickey@users.noreply.github.com>
Co-authored-by: Adrien Chardon  <nodraak@users.noreply.github.com>
@astrogeco
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CCB:2021-09-21 APPROVED

@astrogeco astrogeco added the CCB:Approved Indicates code review and approval by community CCB label Sep 22, 2021
@astrogeco astrogeco added this to the 7.0.0 milestone Sep 22, 2021
@jphickey jphickey deleted the fix-1971-alias-warning branch September 22, 2021 20:03
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Possible alias warning on certain compiler versions
3 participants