On Wed, Nov 27, 2013 at 7:00 AM, Thomas Gummerer <t.gummerer@xxxxxxxxx> wrote:
> Respect a GIT_INDEX_VERSION environment variable, when a new index is
> initialized. Setting the environment variable will not cause existing
> index files to be converted to another format for additional safety.
>
> Signed-off-by: Thomas Gummerer <t.gummerer@xxxxxxxxx>
> ---
> diff --git a/read-cache.c b/read-cache.c
> index 46551af..04430e5 100644
> --- a/read-cache.c
> +++ b/read-cache.c
> @@ -1233,8 +1233,13 @@ static struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int reall
> void initialize_index(struct index_state *istate, int version)
> {
> istate->initialized = 1;
> - if (!version)
> - version = INDEX_FORMAT_DEFAULT;
> + if (!version) {
> + char *envversion = getenv("GIT_INDEX_VERSION");
> + if (!envversion)
> + version = INDEX_FORMAT_DEFAULT;
> + else
> + version = atoi(envversion);
Do you want to check that atoi() returned a valid value and emit a
diagnostic if it did not?
> + }
> istate->version = version;
> set_istate_ops(istate);
> }
> --
> 1.8.4.2
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