[PATCH 2/5] Always initialize xpparam_t to 0

["René Scharfe" <rene.scharfe@lsrfire.ath.cx>]

From: Brian Downing <bdowning@lavos.net>

We're going to be adding some parameters to this, so we can't have
any uninitialized data in it.

Signed-off-by: Brian Downing <bdowning@lavos.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
Taken from pu.  This patch series doesn't add anything to the struct,
but it's a good idea to future-proof its initialization anyway.

 builtin-blame.c  |    1 +
 builtin-rerere.c |    1 +
 combine-diff.c   |    1 +
 diff.c           |    5 +++++
 merge-file.c     |    1 +
 5 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/builtin-blame.c b/builtin-blame.c
index 593b539..5ca7065 100644
--- a/builtin-blame.c
+++ b/builtin-blame.c
@@ -523,6 +523,7 @@ static struct patch *compare_buffer(mmfile_t
*file_p, mmfile_t *file_o,
 	xdemitconf_t xecfg;
 	xdemitcb_t ecb;

+	memset(&xpp, 0, sizeof(xpp));
 	xpp.flags = xdl_opts;
 	memset(&xecfg, 0, sizeof(xecfg));
 	xecfg.ctxlen = context;
diff --git a/builtin-rerere.c b/builtin-rerere.c
index dd4573f..d4dec6b 100644
--- a/builtin-rerere.c
+++ b/builtin-rerere.c
@@ -98,6 +98,7 @@ static int diff_two(const char *file1, const char *label1,

 	printf("--- a/%s\n+++ b/%s\n", label1, label2);
 	fflush(stdout);
+	memset(&xpp, 0, sizeof(xpp));
 	xpp.flags = XDF_NEED_MINIMAL;
 	memset(&xecfg, 0, sizeof(xecfg));
 	xecfg.ctxlen = 3;
diff --git a/combine-diff.c b/combine-diff.c
index 5aa1104..ec8df39 100644
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -213,6 +213,7 @@ static void combine_diff(const unsigned char
*parent, mmfile_t *result_file,

 	parent_file.ptr = grab_blob(parent, &sz);
 	parent_file.size = sz;
+	memset(&xpp, 0, sizeof(xpp));
 	xpp.flags = XDF_NEED_MINIMAL;
 	memset(&xecfg, 0, sizeof(xecfg));
 	memset(&state, 0, sizeof(state));
diff --git a/diff.c b/diff.c
index e368fef..1918b73 100644
--- a/diff.c
+++ b/diff.c
@@ -400,6 +400,7 @@ static void diff_words_show(struct diff_words_data
*diff_words)
 	mmfile_t minus, plus;
 	int i;

+	memset(&xpp, 0, sizeof(xpp));
 	memset(&xecfg, 0, sizeof(xecfg));
 	minus.size = diff_words->minus.text.size;
 	minus.ptr = xmalloc(minus.size);
@@ -1416,6 +1417,7 @@ static void builtin_diff(const char *name_a,
 		if (!pe)
 			pe = diff_funcname_pattern(two);

+		memset(&xpp, 0, sizeof(xpp));
 		memset(&xecfg, 0, sizeof(xecfg));
 		memset(&ecbdata, 0, sizeof(ecbdata));
 		ecbdata.label_path = lbl;
@@ -1489,6 +1491,7 @@ static void builtin_diffstat(const char *name_a,
const char *name_b,
 		xdemitconf_t xecfg;
 		xdemitcb_t ecb;

+		memset(&xpp, 0, sizeof(xpp));
 		memset(&xecfg, 0, sizeof(xecfg));
 		xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts;
 		xdi_diff_outf(&mf1, &mf2, diffstat_consume, diffstat,
@@ -1535,6 +1538,7 @@ static void builtin_checkdiff(const char *name_a,
const char *name_b,
 		xdemitconf_t xecfg;
 		xdemitcb_t ecb;

+		memset(&xpp, 0, sizeof(xpp));
 		memset(&xecfg, 0, sizeof(xecfg));
 		xecfg.ctxlen = 1; /* at least one context line */
 		xpp.flags = XDF_NEED_MINIMAL;
@@ -2958,6 +2962,7 @@ static int diff_get_patch_id(struct diff_options
*options, unsigned char *sha1)
 		struct diff_filepair *p = q->queue[i];
 		int len1, len2;

+		memset(&xpp, 0, sizeof(xpp));
 		memset(&xecfg, 0, sizeof(xecfg));
 		if (p->status == 0)
 			return error("internal diff status error");
diff --git a/merge-file.c b/merge-file.c
index 2a939c9..3120a95 100644
--- a/merge-file.c
+++ b/merge-file.c
@@ -61,6 +61,7 @@ static int generate_common_file(mmfile_t *res,
mmfile_t *f1, mmfile_t *f2)
 	xdemitconf_t xecfg;
 	xdemitcb_t ecb;

+	memset(&xpp, 0, sizeof(xpp));
 	xpp.flags = XDF_NEED_MINIMAL;
 	memset(&xecfg, 0, sizeof(xecfg));
 	xecfg.ctxlen = 3;
-- 
1.6.0.3.514.g2f91b