tree 02b2f7931e6d62273dc866863f600ee0b2f945b5
parent 3952db66efee4f22f3c6a0fd02a1e7071556a8d6
author Paolo 'Blaisorblade' Giarrusso <[EMAIL PROTECTED]> Thu, 14 Jul 2005
14:33:34 -0700
committer Linus Torvalds <[EMAIL PROTECTED]> Thu, 14 Jul 2005 23:00:24 -0700
[PATCH] uml: fix lvalue for gcc4
Russell King <[EMAIL PROTECTED]>
This construct is refused by GCC 4, so here's the (corrected) fix. Thanks to
Russell for noticing a stupid mistake I did when first sending this.
As he noted, the code is largely suboptimal however it currently works, and
will be fixed shortly. Just read the access_ok check on fp which is NULL, or
the pointer arithmetic below which should be done with a cast to void*:
frame = (struct rt_sigframe __user *)
round_down(stack_top - sizeof(struct rt_sigframe), 16) - 8;
The code shows clearly that has been taken from
arch/x86_64/kernel/signal.c:setup_rt_frame(), maybe in a bit of a hurry.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <[EMAIL PROTECTED]>
Cc: Jeff Dike <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
arch/um/sys-x86_64/signal.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/um/sys-x86_64/signal.c b/arch/um/sys-x86_64/signal.c
--- a/arch/um/sys-x86_64/signal.c
+++ b/arch/um/sys-x86_64/signal.c
@@ -168,7 +168,7 @@ int setup_signal_stack_si(unsigned long
frame = (struct rt_sigframe __user *)
round_down(stack_top - sizeof(struct rt_sigframe), 16) - 8;
- ((unsigned char *) frame) -= 128;
+ frame = (struct rt_sigframe *) ((unsigned long) frame - 128);
if (!access_ok(VERIFY_WRITE, fp, sizeof(struct _fpstate)))
goto out;
-
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