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[PATCH] Compilation: zero-length array declaration.

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ISO C99 (and GCC 3.x or later) lets you write a flexible array
at the end of a structure, like this:

	struct frotz {
		int xyzzy;
		char nitfol[]; /* more */
	};

GCC 2.95 and 2.96 let you to do this with "char nitfol[0]";
unfortunately this is not allowed by ISO C90.

This declares such construct like this:

	struct frotz {
		int xyzzy;
		char nitfol[FLEX_ARRAY]; /* more */
	};

and git-compat-util.h defines FLEX_ARRAY to 0 for gcc 2.95 and
empty for others.

If you are using a C90 C compiler, you should be able
to override this with CFLAGS=-DFLEX_ARRAY=1 from the
command line of "make".

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano
2006-01-07 01:33:54 -08:00
parent 3be7098ce4
commit 8f1d2e6f49
10 changed files with 21 additions and 12 deletions
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9
cache.h
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@ -81,7 +81,7 @@ struct cache_entry {
unsigned int ce_size;
unsigned char sha1[20];
unsigned short ce_flags;
char name[0];
char name[FLEX_ARRAY]; /* more */
};
#define CE_NAMEMASK (0x0fff)
@ -257,7 +257,7 @@ extern int checkout_entry(struct cache_entry *ce, struct checkout *state);
extern struct alternate_object_database {
struct alternate_object_database *next;
char *name;
char base[0]; /* more */
char base[FLEX_ARRAY]; /* more */
} *alt_odb_list;
extern void prepare_alt_odb(void);
@ -271,7 +271,8 @@ extern struct packed_git {
unsigned int pack_use_cnt;
int pack_local;
unsigned char sha1[20];
char pack_name[0]; /* something like ".git/objects/pack/xxxxx.pack" */
/* something like ".git/objects/pack/xxxxx.pack" */
char pack_name[FLEX_ARRAY]; /* more */
} *packed_git;
struct pack_entry {
@ -286,7 +287,7 @@ struct ref {
unsigned char new_sha1[20];
unsigned char force;
struct ref *peer_ref; /* when renaming */
char name[0];
char name[FLEX_ARRAY]; /* more */
};
extern int git_connect(int fd[2], char *url, const char *prog);