Revert a bug introduced by PR #2533

pd3 · pd3 · commit b64ebe7b1e5d · 2026-04-02T11:55:13.000+01:00
As explained by #2533 (comment) the original code was correct
diff --git a/regidx.c b/regidx.c
@@ -442,7 +442,7 @@ int regidx_overlap(regidx_t *regidx, const char *chr, uint32_t beg, uint32_t end
         if ( !i )
         {
             int iend = iBIN(end);
-            if ( iend >= list->nidx ) iend = list->nidx - 1;
+            if ( iend > list->nidx ) iend = list->nidx; // NB: this is correct, nidx+1 items were allocated
             for (i=ibeg; i<=iend; i++)
                 if ( list->idx[i] ) break;
             if ( i>iend ) return 0;

Original file line number	Diff line number	Diff line change
`@@ -442,7 +442,7 @@ int regidx_overlap(regidx_t regidx, const char chr, uint32_t beg, uint32_t end`
`442`	`442`	`if ( !i )`
`443`	`443`	`{`
`444`	`444`	`int iend = iBIN(end);`
`445`		`- if ( iend >= list->nidx ) iend = list->nidx - 1;`
	`445`	`+ if ( iend > list->nidx ) iend = list->nidx; // NB: this is correct, nidx+1 items were allocated`
`446`	`446`	`for (i=ibeg; i<=iend; i++)`
`447`	`447`	`if ( list->idx[i] ) break;`
`448`	`448`	`if ( i>iend ) return 0;`