various little bugs

3 files changed, 10 insertions, 5 deletions

diff --git a/c.c b/c.c
index c214ced..62e8bbe 100644
--- a/c.c
+++ b/c.c
@@ -3423,12 +3423,12 @@ genswitch(struct comp *cm, struct function *fn, const struct expr *ex)
       EMITS {
          struct block *next = i < st.cases.n - 1 ? newblk(fn) : st.bdefault;
          putcondbranch(fn, addinstr(fn, mkinstr(Oequ, k, .l = sel, .r = mkintcon(k, c.val))), c.blk, next);
-         useblk(fn, next);
+         if (next != st.bdefault) useblk(fn, next);
       }
    }
    vfree(&st.cases);
    if (fn->curblk != end) {
-      EMITS putbranch(fn, end);
+      if (fn->curblk) EMITS putbranch(fn, end);
       useblk(fn, end);
    }
 }
@@ -3517,7 +3517,8 @@ stmt(struct comp *cm, struct function *fn)
          terminates = 0;
       } else {
          EMITS {
-            if (!terminates) putbranch(fn, end = newblk(fn));
+            end = newblk(fn);
+            if (!terminates) putbranch(fn, end);
             useblk(fn, fl);
          }
          terminates &= stmt(cm, fn);
diff --git a/lex.c b/lex.c
index 6dbc324..e668500 100644
--- a/lex.c
+++ b/lex.c
@@ -1168,6 +1168,7 @@ expandfnmacro(struct lexer *lx, struct span *span, struct macro *mac)
                goto Redo;
             }
             tk.t = TKSTRLIT;
+            tk.wide = 0;
             tk.s = buf.buf != tmp ? buf.buf : alloccopy(lx->tmparena, buf.buf, buf.len, 1);
             tk.len = buf.len-1;
             vpush(&rlist2, tk);
@@ -1771,6 +1772,7 @@ mac__file__handler(struct lexer *lx, struct token *tk)
 {
    tk->t = TKSTRLIT;
    tk->s = getfilename(lx->fileid);
+   tk->wide = 0;
    tk->len = strlen(tk->s);
 }
 
@@ -1797,6 +1799,7 @@ mac__date__handler(struct lexer *lx, struct token *tk)
    time_t tm = time(NULL);
    struct tm *ts = localtime(&tm);
    tk->t = TKSTRLIT;
+   tk->wide = 0;
    tk->len = 11;
    if (ts) {
       bfmt(&wbuf, "%S %2d %4d%c",
@@ -1818,6 +1821,7 @@ mac__time__handler(struct lexer *lx, struct token *tk)
    time_t tm = time(NULL);
    struct tm *ts = localtime(&tm);
    tk->t = TKSTRLIT;
+   tk->wide = 0;
    tk->len = 8;
    if (ts) {
       bfmt(&wbuf, "%.2d:%.2d:%.2d%c", ts->tm_hour, ts->tm_min, ts->tm_sec, 0);
diff --git a/regalloc.c b/regalloc.c
index 165b1cb..64dcfac 100644
--- a/regalloc.c
+++ b/regalloc.c
@@ -82,7 +82,7 @@ fixlive(struct function *fn)
    struct bitset definedbuf[4] = {0};
    struct bitset *defined = definedbuf;
 
-   if (BSSIZE(ninstr) >= sizeof(definedbuf))
+   if (BSSIZE(ninstr) >= arraylength(definedbuf))
       defined = xcalloc(sizeof *defined * BSSIZE(ninstr));
    npendingphi = 0;
 
@@ -1010,7 +1010,7 @@ devirt(struct rega *ra, struct block *blk)
       if (nspill > 0) assert(ins->op != Ocall);
 
       /* devirtualize destination */
-      alloc = (it = &ra->intervals.temps[temp]) && it->nrange ? &it->alloc : NULL;
+      alloc = temp < ra->intervals.count && (it = &ra->intervals.temps[temp]) && it->nrange ? &it->alloc : NULL;
       if (alloc && alloc->t == ASTACK) {
          int store = Ostore1 + ilog2(cls2siz[insrescls(*ins)]);
          /* t was spilled, gen store */