Fix redeclaration of RecordDecl in Records defined in array variables #4
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There are some cases where a variable is declared as follows:
static const struct mount_opts
{
int token;
int mount_opts;
int flags;
} ext4_mount_opts[] = {
{1, 1, 1}
};
in this case, the `ext4_mount_opts` array is declared together with its
type, thus resulting in Clang splitting this into two decls in its AST:
struct mount_opts
{
int token;
int mount_opts;
int flags;
};
static const struct ext4_mount_opts[] = {
{1, 1, 1}
};
but since we try to get what the user wrote, it results in two declarations
of `struct mount_opts`, thus clang-extract fails because of a redeclaration
error. But since `ext4_mount_opts` is an array, geting its type returns
an array type, not the struct declaration itself, hence check for this
case as well.
Signed-off-by: Giuliano Belinassi <gbelinassi@suse.de>
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Now it shows a different issue regarding symbol renaming =/ |
|
What issue? |
With the resolved issue, now it reports missing symbol: But the symbol is there, and it's also present in the ext4.ko module too. |
This seems to be another issue. Perhaps open another issue with more details of this problem? |
|
Sure, I'll check this again once I start working on this livepatch again. |
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@giulianobelinassi indeed, the error message changes, and it's not a different issue. You can merge this PR as this fixed the original issue. |
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There are some cases where a variable is declared as follows:
in this case, the
ext4_mount_optsarray is declared together with its type, thus resulting in Clang splitting this into two decls in its AST:but since we try to get what the user wrote, it results in two declarations of
struct mount_opts, thus clang-extract fails because of a redeclaration error. But sinceext4_mount_optsis an array, geting its type returns an array type, not the struct declaration itself, hence check for this case as well.