diff mbox series

[v2,10/10] read-cache.c: initialize copy_len to shut up gcc 8

Message ID 20181027173008.18852-11-pclouds@gmail.com (mailing list archive)
State New, archived
Headers show
Series Reduce #ifdef NO_PTHREADS | expand

Commit Message

Duy Nguyen Oct. 27, 2018, 5:30 p.m. UTC
It was reported that when building with NO_PTHREADS=1,
-Wmaybe-uninitialized is triggered. Just initialize the variable from
the beginning to shut the compiler up (because this warning is enabled
in config.dev)

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 read-cache.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

Comments

Jeff King Oct. 29, 2018, 2:31 p.m. UTC | #1
On Sat, Oct 27, 2018 at 07:30:08PM +0200, Nguyễn Thái Ngọc Duy wrote:

> It was reported that when building with NO_PTHREADS=1,
> -Wmaybe-uninitialized is triggered. Just initialize the variable from
> the beginning to shut the compiler up (because this warning is enabled
> in config.dev)
> 
> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
> ---
>  read-cache.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/read-cache.c b/read-cache.c
> index ba870bc3fd..4307b9a7bf 100644
> --- a/read-cache.c
> +++ b/read-cache.c
> @@ -1746,7 +1746,7 @@ static struct cache_entry *create_from_disk(struct mem_pool *ce_mem_pool,
>  	size_t len;
>  	const char *name;
>  	unsigned int flags;
> -	size_t copy_len;
> +	size_t copy_len = 0;
>  	/*
>  	 * Adjacent cache entries tend to share the leading paths, so it makes
>  	 * sense to only store the differences in later entries.  In the v4
> @@ -1786,8 +1786,6 @@ static struct cache_entry *create_from_disk(struct mem_pool *ce_mem_pool,
>  				die(_("malformed name field in the index, near path '%s'"),
>  					previous_ce->name);
>  			copy_len = previous_len - strip_len;
> -		} else {
> -			copy_len = 0;
>  		}
>  		name = (const char *)cp;
>  	}

Yes, this silences the compiler warning I saw (and is exactly the same
patch I wrote to get past it the other day ;) ).

-Peff
diff mbox series

Patch

diff --git a/read-cache.c b/read-cache.c
index ba870bc3fd..4307b9a7bf 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -1746,7 +1746,7 @@  static struct cache_entry *create_from_disk(struct mem_pool *ce_mem_pool,
 	size_t len;
 	const char *name;
 	unsigned int flags;
-	size_t copy_len;
+	size_t copy_len = 0;
 	/*
 	 * Adjacent cache entries tend to share the leading paths, so it makes
 	 * sense to only store the differences in later entries.  In the v4
@@ -1786,8 +1786,6 @@  static struct cache_entry *create_from_disk(struct mem_pool *ce_mem_pool,
 				die(_("malformed name field in the index, near path '%s'"),
 					previous_ce->name);
 			copy_len = previous_len - strip_len;
-		} else {
-			copy_len = 0;
 		}
 		name = (const char *)cp;
 	}