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Subjectgcc-3.2.2 miscompiles kernel 2.4.* O_DIRECT code ?
Hi,

I found out that O_DIRECT does not work correctly on 2.4 kernels
compiled with the RH gcc-3.2.2-5 on RH9. It is working fine with
kernels compiled with the RH gcc-2.96-113 on RH 7.3.

The sympton is that read() only returns zeroes (as data). No errors.
It happens with several 2.4 kernels I have tried, including 2.4.21-ac1.

I don't know if this is a RH9 gcc specific bug or if it is a generic
gcc3 problem. That's why I post here: to find out if more people
have seen this.

I also filed a bug in RH's bugzilla. See this for more details:

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=97529


greetings,
Rob van Nieuwkerk
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