Add test for #2520

Author: pd3

NEWS

@@ -20,6 +20,11 @@ Changes affecting specific commands:
     - Make --gvcf2vcf work around malformed gVCF records where INFO/END overlaps
       the next record
 
+* bcftools merge
+
+    - Fixes in memory access with localized alleles, it could result in printing
+      printing trailing garbage in localized FORMAT fields (#2520)
+
 * bcftools mpileup
 
     - Remove unused experimental INFO/MIN_PL_SUM annotation

test/merge.LPL.3.out

@@ -18,6 +18,6 @@
 1	30000	.	C	T	.	.	.	GT:PL:GL:AD:DF:DD	0/1:20,0,20:20,0,20:1,2:0.1,0.2:1	0/1:20,0,20:20,0,20:1,2:0.1,0.2:1	0/1:20,0,20:20,0,20:1,2:0.1,0.2:1
 1	30001	.	C	CA,CC,CG	.	.	.	GT:LPL:LGL:LAD:LDF:LDD:LAA	0/1:10,0,10:10,0,10:1,2:0.1,0.2:1:1	0/2:10,0,10:10,0,10:1,2:0.1,0.2:1:2	0/3:10,0,10:10,0,10:1,2:0.1,0.2:1:3
 1	30002	.	C	CA,CAA,CC,CCC,CG,CGG	.	.	.	GT:LPL:LGL:LAD:LDF:LDD:LAA	1/2:20,20,20,10,0,10:20,20,20,10,0,10:0,1,2:0,0.1,0.2:1,2:1,2	3/4:20,20,20,10,0,10:20,20,20,10,0,10:0,1,2:0,0.1,0.2:1,2:3,4	5/6:20,20,20,10,0,10:20,20,20,10,0,10:0,1,2:0,0.1,0.2:1,2:5,6
-1	30003	.	C	CA,CAA,CAAA	.	.	.	GT:LPL:LGL:LAD:LDF:LDD:LAA	1/2:20,20,20,10,0,10:20,20,20,10,0,10:0,1,2:0,0.1,0.2:1,2:1,2	./.:.:.:.:.:.:.,.	./.:.:.:.:.:.:.
-1	30004	.	C	CC,CCC,CCCC	.	.	.	GT:LPL:LGL:LAD:LDF:LDD:LAA	./.:.:.:.:.:.:.	1/2:20,20,20,10,0,10:20,20,20,10,0,10:0,1,2:0,0.1,0.2:1,2:1,2	./.:.:.:.:.:.:.,2
-1	30005	.	C	CG,CGG,CGGG	.	.	.	GT:LPL:LGL:LAD:LDF:LDD:LAA	./.:.:.:.:.:.:.	./.:.:.:.:.:.:.,.	1/2:20,20,20,10,0,10:20,20,20,10,0,10:0,1,2:0,0.1,0.2:1,2:1,2
+1	30003	.	C	CA,CAA,CAAA	.	.	.	GT:LPL:LGL:LAD:LDF:LDD:LAA	1/2:20,20,20,10,0,10:20,20,20,10,0,10:0,1,2:0,0.1,0.2:1,2:1,2	./.:.:.:.:.:.:.	./.:.:.:.:.:.:.
+1	30004	.	C	CC,CCC,CCCC	.	.	.	GT:LPL:LGL:LAD:LDF:LDD:LAA	./.:.:.:.:.:.:.	1/2:20,20,20,10,0,10:20,20,20,10,0,10:0,1,2:0,0.1,0.2:1,2:1,2	./.:.:.:.:.:.:.
+1	30005	.	C	CG,CGG,CGGG	.	.	.	GT:LPL:LGL:LAD:LDF:LDD:LAA	./.:.:.:.:.:.:.	./.:.:.:.:.:.:.	1/2:20,20,20,10,0,10:20,20,20,10,0,10:0,1,2:0,0.1,0.2:1,2:1,2