* [PATCH] ARM: Wrong size used in dump_mem()
@ 2009-12-17 21:15 Roel Kluin
2009-12-17 21:17 ` Russell King - ARM Linux
0 siblings, 1 reply; 3+ messages in thread
From: Roel Kluin @ 2009-12-17 21:15 UTC (permalink / raw)
To: linux-arm-kernel
The sizeof the pointed to should be used rather than of the pointer
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
---
Unless I am mistaken?
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 3f361a7..5e828fa 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -102,7 +102,7 @@ static void dump_mem(const char *lvl, const char *str, unsigned long bottom,
unsigned long p;
char str[sizeof(" 12345678") * 8 + 1];
- memset(str, ' ', sizeof(str));
+ memset(str, ' ', sizeof(*str));
str[sizeof(str) - 1] = '\0';
for (p = first, i = 0; i < 8 && p < top; i++, p += 4) {
^ permalink raw reply related [flat|nested] 3+ messages in thread* [PATCH] ARM: Wrong size used in dump_mem()
2009-12-17 21:15 [PATCH] ARM: Wrong size used in dump_mem() Roel Kluin
@ 2009-12-17 21:17 ` Russell King - ARM Linux
2009-12-17 21:20 ` roel kluin
0 siblings, 1 reply; 3+ messages in thread
From: Russell King - ARM Linux @ 2009-12-17 21:17 UTC (permalink / raw)
To: linux-arm-kernel
On Thu, Dec 17, 2009 at 10:15:58PM +0100, Roel Kluin wrote:
> The sizeof the pointed to should be used rather than of the pointer
>
> Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
> ---
> Unless I am mistaken?
You are mistaken. sizeof(array) is the byte size of the array.
sizeof(*array) is the size of one individual object of the array.
The code is correct as is - which is to fill the entire array with
space characters and then zero the last one.
> diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
> index 3f361a7..5e828fa 100644
> --- a/arch/arm/kernel/traps.c
> +++ b/arch/arm/kernel/traps.c
> @@ -102,7 +102,7 @@ static void dump_mem(const char *lvl, const char *str, unsigned long bottom,
> unsigned long p;
> char str[sizeof(" 12345678") * 8 + 1];
>
> - memset(str, ' ', sizeof(str));
> + memset(str, ' ', sizeof(*str));
> str[sizeof(str) - 1] = '\0';
>
> for (p = first, i = 0; i < 8 && p < top; i++, p += 4) {
^ permalink raw reply [flat|nested] 3+ messages in thread* [PATCH] ARM: Wrong size used in dump_mem()
2009-12-17 21:17 ` Russell King - ARM Linux
@ 2009-12-17 21:20 ` roel kluin
0 siblings, 0 replies; 3+ messages in thread
From: roel kluin @ 2009-12-17 21:20 UTC (permalink / raw)
To: linux-arm-kernel
On Thu, Dec 17, 2009 at 10:17 PM, Russell King - ARM Linux
<linux@arm.linux.org.uk> wrote:
> On Thu, Dec 17, 2009 at 10:15:58PM +0100, Roel Kluin wrote:
>> The sizeof the pointed to should be used rather than of the pointer
>>
>> Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
>> ---
>> Unless I am mistaken?
>
> You are mistaken. ?sizeof(array) is the byte size of the array.
> sizeof(*array) is the size of one individual object of the array.
>
> The code is correct as is - which is to fill ?the entire array with
> space characters and then zero the last one.
hmm, I see. sorry for the noise
^ permalink raw reply [flat|nested] 3+ messages in thread
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2009-12-17 21:15 [PATCH] ARM: Wrong size used in dump_mem() Roel Kluin
2009-12-17 21:17 ` Russell King - ARM Linux
2009-12-17 21:20 ` roel kluin
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