--- /dev/null
+#! /usr/bin/python3
+import os
+import sys
+import generator_utils as gen
+
+template = """// @{generatedby}@
+/* ///////////////////////// The MPI Bugs Initiative ////////////////////////
+
+ Origin: MBI
+
+ Description: @{shortdesc}@
+ @{longdesc}@
+
+ Version of MPI: Conforms to MPI 1.1, does not require MPI 2 implementation
+
+BEGIN_MPI_FEATURES
+ P2P!basic: @{p2pfeature}@
+ P2P!nonblocking: @{ip2pfeature}@
+ P2P!persistent: Lacking
+ COLL!basic: Lacking
+ COLL!nonblocking: Lacking
+ COLL!persistent: Lacking
+ COLL!tools: Lacking
+ RMA: Lacking
+END_MPI_FEATURES
+
+BEGIN_MBI_TESTS
+ $ mpirun -np 4 ${EXE}
+ | @{outcome}@
+ | @{errormsg}@
+END_MBI_TESTS
+////////////////////// End of MBI headers /////////////////// */
+
+#include <mpi.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define N 2
+
+int main(int argc, char **argv) {
+ int nprocs = -1;
+ int rank = -1;
+ int dest, src;
+ int i=0;
+ int root = 0;
+ int stag = 0, rtag = 0;
+ int buff_size = 1;
+
+ MPI_Init(&argc, &argv);
+ MPI_Comm_size(MPI_COMM_WORLD, &nprocs);
+ MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+ printf("Hello from rank %d \\n", rank);
+
+ if (nprocs != 4)
+ printf("MBI ERROR: This test needs 4 processes to produce a bug!\\n");
+
+ int dbs = sizeof(int)*nprocs; /* Size of the dynamic buffers for alltoall and friends */
+ MPI_Comm newcom = MPI_COMM_WORLD;
+ MPI_Datatype type = MPI_INT;
+ MPI_Op op = MPI_SUM;
+
+ @{init0a}@
+ @{init0b}@
+ @{init0c}@
+ @{init1a}@
+ @{init1b}@
+ @{init3a}@
+ @{init3b}@
+ @{init3c}@
+ @{init3d}@
+
+ if (rank == 0) {
+ src = MPI_ANY_SOURCE; rtag = @{tag}@;
+ for (int i = 0; i < 2 * N; i++) {
+ @{operation0a}@ /* MBIERROR1 */
+ @{fini0a}@
+ }
+ src = 3; rtag = 0;
+ @{operation0b}@ /* MBIERROR2 */
+ @{fini0b}@
+ @{operation0c}@
+ @{fini0c}@
+ } else if (rank == 1 || rank == 2) {
+ dest = 0; stag = @{tag}@;
+ for (int i = 0; i < N; i++) {
+ @{operation1a}@
+ @{fini1a}@
+ }
+ dest = 3; stag = 0;
+ @{operation1b}@
+ @{fini1b}@
+ } else if (rank == 3) {
+ dest = 0; src = 1; rtag= 0; stag = 0;
+ @{operation3a}@
+ @{fini3a}@
+ @{operation3b}@ /* MBIERROR3 */
+ @{fini3b}@
+ src = 2;
+ @{operation3c}@
+ @{fini3c}@
+ @{operation3d}@
+ @{fini3d}@
+ }
+
+ @{free0a}@
+ @{free0b}@
+ @{free0c}@
+ @{free1a}@
+ @{free1b}@
+ @{free3a}@
+ @{free3b}@
+ @{free3c}@
+ @{free3d}@
+
+ MPI_Finalize();
+ printf("Rank %d finished normally\\n", rank);
+ return 0;
+}
+"""
+
+basedesc = 'We have 4 processes (p0, p1, p2 and p3). p1 and p2 send N messages to p0 and send a last message to p3. Process p0 recv 2*N messages from p1 and p2 using MPI_ANY_SOURCE and wait messages from p3. p3 wait a message from p1 and send message to p0, before doing the same for p2.'
+
+for s in gen.send + gen.isend:
+ for r in gen.recv + gen.irecv:
+ patterns = {}
+ patterns = {'s': s, 'r': r}
+ patterns['generatedby'] = f'DO NOT EDIT: this file was generated by {os.path.basename(sys.argv[0])}. DO NOT EDIT.'
+ patterns['p2pfeature'] = 'Yes' if s in gen.send or r in gen.recv else 'Lacking'
+ patterns['ip2pfeature'] = 'Yes' if s in gen.isend or r in gen.irecv else 'Lacking'
+ patterns['s'] = s
+ patterns['r'] = r
+
+ patterns['init0a'] = gen.init[r]("0a")
+ patterns['init0b'] = gen.init[r]("0b")
+ patterns['init0c'] = gen.init[r]("0c")
+ patterns['operation0a'] = gen.operation[r]("0a")
+ patterns['operation0b'] = gen.operation[r]("0b")
+ patterns['operation0c'] = gen.operation[r]("0c")
+ patterns['fini0a'] = gen.fini[r]("0a")
+ patterns['fini0b'] = gen.fini[r]("0b")
+ patterns['fini0c'] = gen.fini[r]("0c")
+ patterns['free0a'] = gen.free[r]("0a")
+ patterns['free0b'] = gen.free[r]("0b")
+ patterns['free0c'] = gen.free[r]("0c")
+
+ patterns['init1a'] = gen.init[s]("1a")
+ patterns['init1b'] = gen.init[s]("1b")
+ patterns['operation1a'] = gen.operation[s]("1a")
+ patterns['operation1b'] = gen.operation[s]("1b")
+ patterns['fini1a'] = gen.fini[s]("1a")
+ patterns['fini1b'] = gen.fini[s]("1b")
+ patterns['free1a'] = gen.free[s]("1a")
+ patterns['free1b'] = gen.free[s]("1b")
+
+ patterns['init3a'] = gen.init[r]("3a")
+ patterns['init3b'] = gen.init[s]("3b")
+ patterns['init3c'] = gen.init[r]("3c")
+ patterns['init3d'] = gen.init[s]("3d")
+ patterns['operation3a'] = gen.operation[r]("3a")
+ patterns['operation3b'] = gen.operation[s]("3b")
+ patterns['operation3c'] = gen.operation[r]("3c")
+ patterns['operation3d'] = gen.operation[s]("3d")
+ patterns['fini3a'] = gen.fini[r]("3a")
+ patterns['fini3b'] = gen.fini[s]("3b")
+ patterns['fini3c'] = gen.fini[r]("3c")
+ patterns['fini3d'] = gen.fini[s]("3d")
+ patterns['free3a'] = gen.free[r]("3a")
+ patterns['free3b'] = gen.free[s]("3b")
+ patterns['free3c'] = gen.free[r]("3c")
+ patterns['free3d'] = gen.free[s]("3d")
+
+ patterns['tag'] = '1'
+
+ # Generate the correct matching because of the conditional
+ replace = patterns.copy()
+ replace['shortdesc'] = 'Message race'
+ replace['longdesc'] = basedesc + ' In this file, different message tag are used to avoid involuntary message race.'
+ replace['outcome'] = 'OK'
+ replace['errormsg'] = 'OK'
+ gen.make_file(template, f'MessageRace_Loop_{s}_{r}_ok.c', replace)
+
+ # Generate the incorrect matching because of the conditional
+ replace = patterns.copy()
+ replace['shortdesc'] = 'Message race'
+ replace['longdesc'] = basedesc + ' If the loop of p1 ending before the loop of p2, p0 could recv a message from process p3 into recv loop destined to message from p1 and p2. In this case, the program deadlock cause by message race at recv at line @{line:MBIERROR2}@.'
+ replace['outcome'] = 'ERROR: MessageRace'
+ replace['errormsg'] = 'Message race. The use of wildcard receive calls @{r}@ at @{filename}@:@{line:MBIERROR1}@ from @{r}@ at @{filename}@:@{line:MBIERROR3}@ and @{r}@ without wildcard at @{filename}@:@{line:MBIERROR2}@) leads to nondeterministic matching.'
+ replace['tag'] = '0'
+ gen.make_file(template, f'MessageRace_Loop_{s}_{r}_nok.c', replace)
