snprints for safety

R=r
OCL=15311
CL=15311

diff --git a/src/cmd/6g/list.c b/src/cmd/6g/list.c
index f5b2d554d763ce2d377dc596cd0dbf1a8c5cf4d5..8f764a62234e5df753757105bb96c3cf3d83ba02 100644 (file)
--- a/src/cmd/6g/list.c
+++ b/src/cmd/6g/list.c
@@ -73,7 +73,7 @@ Pconv(Fmt *fp)
 int
 Dconv(Fmt *fp)
 {
-       char str[40], s[20];
+       char str[100], s[100];
        Addr *a;
        int i;
        uint32 d1, d2;
@@ -82,18 +82,18 @@ Dconv(Fmt *fp)
        i = a->type;
        if(i >= D_INDIR) {
                if(a->offset)
-                       sprint(str, "%lld(%R)", a->offset, i-D_INDIR);
+                       snprint(str, sizeof(str), "%lld(%R)", a->offset, i-D_INDIR);
                else
-                       sprint(str, "(%R)", i-D_INDIR);
+                       snprint(str, sizeof(str), "(%R)", i-D_INDIR);
                goto brk;
        }
        switch(i) {
 
        default:
                if(a->offset)
-                       sprint(str, "$%lld,%R", a->offset, i);
+                       snprint(str, sizeof(str), "$%lld,%R", a->offset, i);
                else
-                       sprint(str, "%R", i);
+                       snprint(str, sizeof(str), "%R", i);
                break;
 
        case D_NONE:
@@ -105,50 +105,50 @@ Dconv(Fmt *fp)
                break;
 
        case D_EXTERN:
-               sprint(str, "%S+%lld(SB)", a->sym, a->offset);
+               snprint(str, sizeof(str), "%S+%lld(SB)", a->sym, a->offset);
                break;
 
        case D_STATIC:
-               sprint(str, "%S<>+%lld(SB)", a->sym, a->offset);
+               snprint(str, sizeof(str), "%S<>+%lld(SB)", a->sym, a->offset);
                break;
 
        case D_AUTO:
-               sprint(str, "%S+%lld(SP)", a->sym, a->offset);
+               snprint(str, sizeof(str), "%S+%lld(SP)", a->sym, a->offset);
                break;
 
        case D_PARAM:
-               sprint(str, "%S+%lld(FP)", a->sym, a->offset);
+               snprint(str, sizeof(str), "%S+%lld(FP)", a->sym, a->offset);
                break;
 
        case D_CONST:
                if(fp->flags & FmtLong) {
                        d1 = a->offset & 0xffffffffLL;
                        d2 = (a->offset>>32) & 0xffffffffLL;
-                       sprint(str, "$%lud-%lud", d1, d2);
+                       snprint(str, sizeof(str), "$%lud-%lud", d1, d2);
                        break;
                }
-               sprint(str, "$%lld", a->offset);
+               snprint(str, sizeof(str), "$%lld", a->offset);
                break;
 
        case D_FCONST:
-               sprint(str, "$(%.17e)", a->dval);
+               snprint(str, sizeof(str), "$(%.17e)", a->dval);
                break;
 
        case D_SCONST:
-               sprint(str, "$\"%Y\"", a->sval);
+               snprint(str, sizeof(str), "$\"%Y\"", a->sval);
                break;
 
        case D_ADDR:
                a->type = a->index;
                a->index = D_NONE;
-               sprint(str, "$%D", a);
+               snprint(str, sizeof(str), "$%D", a);
                a->index = a->type;
                a->type = D_ADDR;
                goto conv;
        }
 brk:
        if(a->index != D_NONE) {
-               sprint(s, "(%R*%d)", (int)a->index, (int)a->scale);
+               snprint(s, sizeof(s), "(%R*%d)", (int)a->index, (int)a->scale);
                strcat(str, s);
        }
 conv: