# [PATCH] index: improve constness for reading blob data

2 messages from 2017-01-10 to 2017-01-11. Participants: Brandon Williams, Junio C Hamano.
Thread: https://gitlist.dev/t/44849

## Brandon Williams, 2017-01-10 20:06

Subject: [PATCH] index: improve constness for reading blob data
Message-ID: <20170110200610.146596-1-bmwill@google.com>
URL: https://gitlist.dev/e/20170110200610.146596-1-bmwill%40google.com

```
Improve constness of the index_state parameter to the
'read_blob_data_from_index' function.

Signed-off-by: Brandon Williams <bmwill@google.com>
---
 cache.h      | 2 +-
 read-cache.c | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/cache.h b/cache.h
index a50a61a19..363953c1a 100644
--- a/cache.h
+++ b/cache.h
@@ -599,7 +599,7 @@ extern int chmod_index_entry(struct index_state *, struct cache_entry *ce, char
 extern int ce_same_name(const struct cache_entry *a, const struct cache_entry *b);
 extern void set_object_name_for_intent_to_add_entry(struct cache_entry *ce);
 extern int index_name_is_other(const struct index_state *, const char *, int);
-extern void *read_blob_data_from_index(struct index_state *, const char *, unsigned long *);
+extern void *read_blob_data_from_index(const struct index_state *, const char *, unsigned long *);
 
 /* do stat comparison even if CE_VALID is true */
 #define CE_MATCH_IGNORE_VALID		01
diff --git a/read-cache.c b/read-cache.c
index f92a912dc..6ee044442 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -2292,7 +2292,8 @@ int index_name_is_other(const struct index_state *istate, const char *name,
 	return 1;
 }
 
-void *read_blob_data_from_index(struct index_state *istate, const char *path, unsigned long *size)
+void *read_blob_data_from_index(const struct index_state *istate,
+				const char *path, unsigned long *size)
 {
 	int pos, len;
 	unsigned long sz;
-- 
2.11.0.390.gc69c2f50cf-goog


```

## Junio C Hamano, 2017-01-11 21:36

Subject: Re: [PATCH] index: improve constness for reading blob data
Message-ID: <xmqqy3yhmg8m.fsf@gitster.mtv.corp.google.com>
URL: https://gitlist.dev/e/xmqqy3yhmg8m.fsf%40gitster.mtv.corp.google.com
In-Reply-To: <20170110200610.146596-1-bmwill@google.com>

```
Brandon Williams <bmwill@google.com> writes:

> Improve constness of the index_state parameter to the
> 'read_blob_data_from_index' function.
>
> Signed-off-by: Brandon Williams <bmwill@google.com>
> ---

Thanks.

```
