* Re: [PATCH babeltrace] Fix: ctf-text: signed base 8, 16 printout
[not found] <1462565337-23715-1-git-send-email-mathieu.desnoyers@efficios.com>
@ 2016-05-09 16:32 ` Jérémie Galarneau
0 siblings, 0 replies; 2+ messages in thread
From: Jérémie Galarneau @ 2016-05-09 16:32 UTC (permalink / raw)
To: Mathieu Desnoyers; +Cc: lttng-dev, Jeremie Galarneau
Merged in master, stable-1.4 and stable-1.3.
Thanks!
Jérémie
On Fri, May 6, 2016 at 4:08 PM, Mathieu Desnoyers
<mathieu.desnoyers@efficios.com> wrote:
> Base 16 signed integer printout is buggy for 64-bit length: a shift of
> 64-bit is undefined.
>
> Change printout of base 8 signed integer to match what is done for base
> 16.
>
> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
> ---
> formats/ctf-text/types/integer.c | 22 ++++++++++++++++------
> 1 file changed, 16 insertions(+), 6 deletions(-)
>
> diff --git a/formats/ctf-text/types/integer.c b/formats/ctf-text/types/integer.c
> index cc3a355..b4587c4 100644
> --- a/formats/ctf-text/types/integer.c
> +++ b/formats/ctf-text/types/integer.c
> @@ -101,10 +101,18 @@ int ctf_text_integer_write(struct bt_stream_pos *ppos, struct bt_definition *def
> {
> uint64_t v;
>
> - if (!integer_declaration->signedness)
> + if (!integer_declaration->signedness) {
> v = integer_definition->value._unsigned;
> - else
> + } else {
> v = (uint64_t) integer_definition->value._signed;
> + if (integer_declaration->len < 64) {
> + /* Round length to the nearest 3-bit */
> + uint8_t rounded_len =
> + integer_declaration->len + ((integer_declaration->len + 2) % 3);
> +
> + v &= ((uint64_t) 1 << rounded_len) - 1;
> + }
> + }
>
> fprintf(pos->fp, "0%" PRIo64, v);
> break;
> @@ -116,11 +124,13 @@ int ctf_text_integer_write(struct bt_stream_pos *ppos, struct bt_definition *def
> if (!integer_declaration->signedness) {
> v = integer_definition->value._unsigned;
> } else {
> - /* Round length to the nearest nibble */
> - uint8_t rounded_len = ((integer_declaration->len + 3) & ~0x3);
> -
> v = (uint64_t) integer_definition->value._signed;
> - v &= ((uint64_t) 1 << rounded_len) - 1;
> + if (integer_declaration->len < 64) {
> + /* Round length to the nearest nibble */
> + uint8_t rounded_len = ((integer_declaration->len + 3) & ~0x3);
> +
> + v &= ((uint64_t) 1 << rounded_len) - 1;
> + }
> }
>
> fprintf(pos->fp, "0x%" PRIX64, v);
> --
> 2.1.4
>
--
Jérémie Galarneau
EfficiOS Inc.
http://www.efficios.com
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^ permalink raw reply [flat|nested] 2+ messages in thread
* [PATCH babeltrace] Fix: ctf-text: signed base 8, 16 printout
@ 2016-05-06 20:08 Mathieu Desnoyers
0 siblings, 0 replies; 2+ messages in thread
From: Mathieu Desnoyers @ 2016-05-06 20:08 UTC (permalink / raw)
To: jgalar; +Cc: lttng-dev
Base 16 signed integer printout is buggy for 64-bit length: a shift of
64-bit is undefined.
Change printout of base 8 signed integer to match what is done for base
16.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---
formats/ctf-text/types/integer.c | 22 ++++++++++++++++------
1 file changed, 16 insertions(+), 6 deletions(-)
diff --git a/formats/ctf-text/types/integer.c b/formats/ctf-text/types/integer.c
index cc3a355..b4587c4 100644
--- a/formats/ctf-text/types/integer.c
+++ b/formats/ctf-text/types/integer.c
@@ -101,10 +101,18 @@ int ctf_text_integer_write(struct bt_stream_pos *ppos, struct bt_definition *def
{
uint64_t v;
- if (!integer_declaration->signedness)
+ if (!integer_declaration->signedness) {
v = integer_definition->value._unsigned;
- else
+ } else {
v = (uint64_t) integer_definition->value._signed;
+ if (integer_declaration->len < 64) {
+ /* Round length to the nearest 3-bit */
+ uint8_t rounded_len =
+ integer_declaration->len + ((integer_declaration->len + 2) % 3);
+
+ v &= ((uint64_t) 1 << rounded_len) - 1;
+ }
+ }
fprintf(pos->fp, "0%" PRIo64, v);
break;
@@ -116,11 +124,13 @@ int ctf_text_integer_write(struct bt_stream_pos *ppos, struct bt_definition *def
if (!integer_declaration->signedness) {
v = integer_definition->value._unsigned;
} else {
- /* Round length to the nearest nibble */
- uint8_t rounded_len = ((integer_declaration->len + 3) & ~0x3);
-
v = (uint64_t) integer_definition->value._signed;
- v &= ((uint64_t) 1 << rounded_len) - 1;
+ if (integer_declaration->len < 64) {
+ /* Round length to the nearest nibble */
+ uint8_t rounded_len = ((integer_declaration->len + 3) & ~0x3);
+
+ v &= ((uint64_t) 1 << rounded_len) - 1;
+ }
}
fprintf(pos->fp, "0x%" PRIX64, v);
--
2.1.4
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lttng-dev@lists.lttng.org
https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
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[not found] <1462565337-23715-1-git-send-email-mathieu.desnoyers@efficios.com>
2016-05-09 16:32 ` [PATCH babeltrace] Fix: ctf-text: signed base 8, 16 printout Jérémie Galarneau
2016-05-06 20:08 Mathieu Desnoyers
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