Hi Carlo,
On Tue, 6 Aug 2019, Carlo Marcelo Arenas Belón wrote:
> 63e7e9d8b6 ("git-grep: Learn PCRE", 2011-05-09) didn't include a way
> to override the system alocator, and so it is incompatible with
> USE_NED_ALLOCATOR as reported by Dscho[1] (in similar code from PCRE2)
>
> Make the minimum change possible to ensure this combination is supported
>
> [1] https://public-inbox.org/git/pull.306.git.gitgitgadget@xxxxxxxxx
>
> Signed-off-by: Carlo Marcelo Arenas Belón <carenas@xxxxxxxxx>
> ---
> Makefile | 2 +-
> grep.c | 10 ++++++++++
> 2 files changed, 11 insertions(+), 1 deletion(-)
>
> diff --git a/Makefile b/Makefile
> index bd246f2989..4b384f3759 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1764,7 +1764,7 @@ ifdef NATIVE_CRLF
> endif
>
> ifdef USE_NED_ALLOCATOR
> - COMPAT_CFLAGS += -Icompat/nedmalloc
> + COMPAT_CFLAGS += -DUSE_NED_ALLOCATOR -Icompat/nedmalloc
This pretends that all custom allocators are selected at build time,
something I tried to stress in my commit message as not true. You can
pre-load not only nedmalloc, but also jemalloc and unless I am mistaken
also tcmalloc. And mi-malloc.
So the premise of this patch, that you can tell at compile time that a
different allocator than the system one will be in use is simply
incorrect.
Ciao,
Dscho
> COMPAT_OBJS += compat/nedmalloc/nedmalloc.o
> OVERRIDE_STRDUP = YesPlease
> endif
> diff --git a/grep.c b/grep.c
> index cd952ef5d3..0154998695 100644
> --- a/grep.c
> +++ b/grep.c
> @@ -150,12 +150,22 @@ int grep_config(const char *var, const char *value, void *cb)
> * Initialize one instance of grep_opt and copy the
> * default values from the template we read the configuration
> * information in an earlier call to git_config(grep_config).
> + *
> + * If using PCRE make sure that the library is configured
> + * to use the right allocator (ex: NED)
> */
> void grep_init(struct grep_opt *opt, struct repository *repo, const char *prefix)
> {
> struct grep_opt *def = &grep_defaults;
> int i;
>
> +#ifdef USE_NED_ALLOCATOR
> +#ifdef USE_LIBPCRE1
> + pcre_malloc = malloc;
> + pcre_free = free;
> +#endif
> +#endif
> +
> memset(opt, 0, sizeof(*opt));
> opt->repo = repo;
> opt->prefix = prefix;
> --
> 2.23.0.rc1
>
>
