Re: Incorrectness for fun and profit

Keith Owens
2000-11-09T21:44:44Z

On Thu, 9 Nov 100 12:15:19 -0500 (EST),
Rick Hohensee <humbubba@smarty.smart.net> wrote:
>built the [2.4] kernel I'm using at the
>moment with gcc 2.7.2.3. I'm looking for "subtle run time bugs". OK, I'm
>desparate for entertainment. That's a given. Where should I look?

2.4.0-test10 kernel/module.c

static struct module kernel_module =
{
size_of_struct: sizeof(struct module),
name: "",
uc: {ATOMIC_INIT(1)},
flags: MOD_RUNNING,
syms: __start___ksymtab,
ex_table_start: __start___ex_table,
ex_table_end: __stop___ex_table

gcc 2.7.2.3 miscompiles structures that have internal labeled structure
initializers. uc gets misaligned, ex_table_start is then misaligned
and the exception table handling fails.

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