This patch fixes "operation on 'v1' may be undefined" warning in sial_exeop().
In some places V1 and L1 where used as arguments at the same time.
It's from lkcdutils and has been there in CVS for a few month. Originally
written by Jan Blunck <jblunck@xxxxxxx>.
Signed-off-by: Bernhard Walle <bwalle@xxxxxxx>
---
extensions/libsial/sial_op.c | 95 ++++++++++++++++++++++++++-----------------
1 file changed, 59 insertions(+), 36 deletions(-)
--- a/extensions/libsial/sial_op.c
+++ b/extensions/libsial/sial_op.c
@@ -28,15 +28,15 @@ typedef struct {
#define V3 (v3?v3:(v3=NODE_EXE(P3)))
#define V4 (v4?v4:(v4=NODE_EXE(P4)))
-#define L1 (unival(v1?v1:V1))
-#define L2 (unival(v2?v2:V2))
-#define L3 (unival(v3?v3:V3))
-#define L4 (unival(v4?v4:V4))
-
-#define S1 ((v1?v1:V1)->v.data)
-#define S2 ((v2?v2:V2)->v.data)
-#define S3 ((v3?v3:V3)->v.data)
-#define S4 ((v4?v4:V4)->v.data)
+#define L1 (unival(V1))
+#define L2 (unival(V2))
+#define L3 (unival(V3))
+#define L4 (unival(V4))
+
+#define S1 ((V1)->v.data)
+#define S2 ((V2)->v.data)
+#define S3 ((V3)->v.data)
+#define S4 ((V4)->v.data)
void sial_do_deref(int n, value_t *v, value_t *ref);
ul
@@ -545,39 +545,53 @@ inval:
case ADD: { /* expr + expr */
/* adding two pointers ? */
if(V2->type.type == V_REF) goto inval;
- sial_transfer(v=sial_newval(), V1, L1 + L2*size);
+
+ V1;
+ sial_transfer(v=sial_newval(), v1,
+ unival(v1) + L2 * size);
}
break;
case SUB: { /* expr - expr */
-
/* different results if mixed types.
if both are pointers then result is a V_BASE */
if(V2->type.type == V_REF)
v=sial_makebtype(L1 - L2);
- else sial_transfer(v=sial_newval(), V1, L1 - L2*size);
+ else {
+ V1;
+ sial_transfer(v=sial_newval(), v1,
+ unival(v1) - L2 * size);
+ }
}
break;
case PREDECR: { /* pre is easy */
- sial_transfer(v=sial_newval(), V1, L1-size);
- sial_setval(V1, v);
+ V1;
+ sial_transfer(v=sial_newval(), v1,
+ unival(v1) - size);
+ sial_setval(v1, v);
}
break;
case PREINCR: {
- sial_transfer(v=sial_newval(), V1, L1+size);
- sial_setval(V1, v);
+ V1;
+ sial_transfer(v=sial_newval(), v1,
+ unival(v1) + size);
+ sial_setval(v1, v);
}
break;
case POSTINCR: {
- sial_transfer(v=sial_newval(), V1, L1+size);
- sial_setval(V1, v);
- sial_transfer(v, V1, L1);
+ V1;
+ sial_transfer(v=sial_newval(), v1,
+ unival(v1) + size);
+ sial_setval(v1, v);
+ sial_transfer(v, v1, unival(v1));
}
break;
case POSTDECR: {
- sial_transfer(v=sial_newval(), V1, L1-size);
- sial_setval(V1, v);
- sial_transfer(v, V1, L1);
+ V1;
+ sial_transfer(v=sial_newval(), v1,
+ unival(v1) - size);
+ sial_setval(v1, v);
+ sial_transfer(v, v1, unival(v1));
}
break;
default:
@@ -625,26 +639,33 @@ inval:
}
break;
case PREDECR: { /* pre is easy */
- sial_transfer(v=sial_newval(), V1, L1-1);
- sial_setval(V1, v);
+ V1;
+ sial_transfer(v=sial_newval(), v1,
+ unival(v1) - 1);
+ sial_setval(v1, v);
}
break;
case PREINCR: {
V1;
- sial_transfer(v=sial_newval(), V1, L1+1);
- sial_setval(V1, v);
+ sial_transfer(v=sial_newval(), v1,
+ unival(v1) + 1);
+ sial_setval(v1, v);
}
break;
case POSTINCR: {
- sial_transfer(v=sial_newval(), V1, L1+1);
- sial_setval(V1, v);
- sial_transfer(v, V1, L1);
+ V1;
+ sial_transfer(v=sial_newval(), v1,
+ unival(v1) + 1);
+ sial_setval(v1, v);
+ sial_transfer(v, v1, unival(v1));
}
break;
case POSTDECR: {
- sial_transfer(v=sial_newval(), V1, L1-1);
- sial_setval(V1, v);
- sial_transfer(v, V1, L1);
+ V1;
+ sial_transfer(v=sial_newval(), v1,
+ unival(v1) - 1);
+ sial_setval(v1, v);
+ sial_transfer(v, v1, unival(v1));
}
break;
default: sial_rerror(&P1->pos, "Oops ops ! [%d]", top);
@@ -682,12 +703,14 @@ doop:
else {
/* if it's a Me-op then v is already set */
- if(top != o->op) { sial_setval(V1, v); }
- else {
-
- sial_setval(V1, V2);
+ V1;
+ if(top != o->op) {
+ sial_setval(v1, v);
+ } else {
+ sial_setval(v1, V2);
v=sial_cloneval(V2);
}
+
}
}
/* the result of a assignment if not an Lvalue_t */
--
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