[coreboot-gerrit] Change in coreboot[master]: xcompile: silence clang when referencing packed structs' mem...

[Patrick Georgi (Code Review)]

Patrick Georgi has posted comments on this change. ( https://review.coreboot.org/19659 )

Change subject: xcompile: silence clang when referencing packed structs' members
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Patch Set 1:

> > multiple locations, and it's bogus everywhere: if we use packed
 > > structs, it's because we expect a certain memory layout (and I
 > > know, modern C compilers needn't adhere to any reasonable
 > > interpretation of that). If we refer to any such element, it
 > might
 > > not be aligned, we know, we don't care.
 > 
 > I agree x86 and armv7 don't care (on armv7 as long as it does not
 > cross memory map boundaries), however armv4 and mips do care. I
 > don't know about riscv/power. That's why I wonder where clang
 > reported this warning. Maybe it worths disabling it checking
 > $SUBARCH not matching arm-armv4 and mips*-mips?

x86, armv7, armv8. memory map boundaries would be indicative of a larger problem given that we're looking at fields within a data structure.

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Gerrit-MessageType: comment
Gerrit-Change-Id: I5400f50d8b5b462270c700f7ff90d9d517278e71
Gerrit-PatchSet: 1
Gerrit-Project: coreboot
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Gerrit-Owner: Patrick Georgi <pgeorgi at google.com>
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