diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 5da1d694..2c6dd066 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -69,6 +69,7 @@ set(REF_FILES "gdaswave.t00z.wcoast.0p16.f000.grib2.idx"
   "testgrib2.grb2"
   "ref_testgrib2.grb2.degrib2"
   "ref_gdaswave_2.grib1.idx"
+  "ref_tst_jasper_warning.txt"
   )
 
 # Copy extra files if needed.
@@ -89,12 +90,17 @@ FILE(COPY ${CMAKE_CURRENT_SOURCE_DIR}/../src/CodeFlag.xml
 FILE(COPY ${CMAKE_CURRENT_SOURCE_DIR}/../src/Template.xml
   DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/)
 
-# Run a C program test.
-function(g2c_test name)
+# Build a C program test.
+function(g2c_build_test name)
   add_executable(${name} ${name}.c util.c)
   target_link_libraries(${name} PUBLIC g2c::g2c)
   target_link_libraries(${name} PRIVATE ${LIBXML2_LIBRARIES})
   target_include_directories(${name} PRIVATE "${LIBXML2_INCLUDE_DIR}")
+endfunction()
+
+# Run a C program test.
+function(g2c_test name)
+  g2c_build_test(${name})
   add_test(NAME ${name} COMMAND ${name})
 endfunction()
 
@@ -217,6 +223,12 @@ if(USE_Jasper OR USE_OpenJPEG)
   g2c_test(tst_jpeg)
   g2c_test(tst_addfield3)
   g2c_test(tst_addfield4)
+  g2c_build_test(tst_jasper_warning)
+endif()
+
+# Test for warnings from jasper.
+if(USE_Jasper)
+  gu_test(run_jasper_warning_test)
 endif()
 
 # Run these shell tests, which require Jasper.
@@ -238,3 +250,4 @@ endif()
 
 
 
+
diff --git a/tests/data/ref_tst_jasper_warning.txt b/tests/data/ref_tst_jasper_warning.txt
new file mode 100644
index 00000000..d6eb9645
--- /dev/null
+++ b/tests/data/ref_tst_jasper_warning.txt
@@ -0,0 +1,3 @@
+Testing JPEG functions.
+Testing enc_jpeg2000()/dec_jpeg2000() call...ok!
+SUCCESS!
diff --git a/tests/run_jasper_warning_test.sh b/tests/run_jasper_warning_test.sh
new file mode 100644
index 00000000..fad9fa5a
--- /dev/null
+++ b/tests/run_jasper_warning_test.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+# This is a test script for the NCEPLIBS-g2c project.
+#
+# This script runs a simple program that uses the jasper library, and
+# then compares the output to expected output, to ensure that jasper
+# is not writing any warning messages to stdout.
+#
+# Ed Hartnett, 10/26/23
+
+set -e
+echo ""
+echo "*** Running jasper warning test"
+set -x
+pwd
+./tst_jasper_warning &> tst_jasper_warning.txt
+
+# Check against expected output.
+diff -w tst_jasper_warning.txt data/ref_tst_jasper_warning.txt
+
+echo "*** SUCCESS!"
+exit 0
diff --git a/tests/tst_jasper_warning.c b/tests/tst_jasper_warning.c
new file mode 100644
index 00000000..df50b43a
--- /dev/null
+++ b/tests/tst_jasper_warning.c
@@ -0,0 +1,48 @@
+/* This is a test for the NCEPLIBS-g2c project. This test is for the
+ * JPEG jasper library. It tests that jasper is not writing any
+ * warnings to stdout.
+ *
+ * Ed Hartnett 10/26/23
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "grib2_int.h"
+
+#define DATA_LEN 4
+#define PACKED_LEN 200
+
+int
+main()
+{
+    printf("Testing JPEG functions.\n");
+    /* g2c_set_log_level(10); */
+    printf("Testing enc_jpeg2000()/dec_jpeg2000() call...");
+    {
+        unsigned char data[DATA_LEN] = {1, 2, 3, 4};
+        g2int width = 2, height = 2, nbits = 4;
+        g2int ltype = 0, ratio = 0, retry = 0, jpclen = PACKED_LEN;
+        char outjpc[PACKED_LEN];
+        g2int outfld[DATA_LEN];
+	int i;
+        int ret;
+    
+        /* Encode some data. */
+        if ((ret = enc_jpeg2000(data, width, height, nbits, ltype,
+                                ratio, retry, outjpc, jpclen)) < 0)
+            return G2C_ERROR;
+
+        /* Now decode it. */
+        if ((ret = dec_jpeg2000(outjpc, jpclen, outfld)))
+            return G2C_ERROR;
+
+        for (i = 0; i < DATA_LEN; i++)
+        {
+            if (outfld[i] != data[i])
+                return G2C_ERROR;
+        }
+    }
+    printf("ok!\n");
+    printf("SUCCESS!\n");
+    return 0;
+}