diff --git a/backend/common.c b/backend/common.c
index 4d42a493..fad2191b 100644
--- a/backend/common.c
+++ b/backend/common.c
@@ -385,12 +385,12 @@ INTERNAL int errtxtf(const int error_number, struct zint_symbol *symbol, const i
                 if (arg == -1) {
                     if (!(symbol->debug & ZINT_DEBUG_TEST)) assert(0);
                     return errtxt(ZINT_ERROR_ENCODING_PROBLEM, symbol, 0,
-                                        "Internal error: invalid numbered format specifer");
+                                    "Internal error: invalid numbered format specifer");
                 }
                 if (i >= 9) {
                     if (!(symbol->debug & ZINT_DEBUG_TEST)) assert(0);
                     return errtxt(ZINT_ERROR_ENCODING_PROBLEM, symbol, 0,
-                                        "Internal error: too many format specifiers (9 maximum)");
+                                    "Internal error: too many format specifiers (9 maximum)");
                 }
                 f += inc;
                 have_num_arg = 1;
@@ -399,7 +399,7 @@ INTERNAL int errtxtf(const int error_number, struct zint_symbol *symbol, const i
                 if (i >= 9) {
                     if (!(symbol->debug & ZINT_DEBUG_TEST)) assert(0);
                     return errtxt(ZINT_ERROR_ENCODING_PROBLEM, symbol, 0,
-                                        "Internal error: too many format specifiers (9 maximum)");
+                                    "Internal error: too many format specifiers (9 maximum)");
                 }
                 have_unnum_arg = 1;
                 idxs[i] = i;
@@ -421,7 +421,7 @@ INTERNAL int errtxtf(const int error_number, struct zint_symbol *symbol, const i
             if (*f != 'c' && *f != 'd' && *f != 'f' && *f != 'g' && *f != 's') {
                 if (!(symbol->debug & ZINT_DEBUG_TEST)) assert(0);
                 return errtxt(ZINT_ERROR_ENCODING_PROBLEM, symbol, 0,
-                                    "Internal error: unknown format specifier ('%c','%d','%f','%g','%s' only)");
+                                "Internal error: unknown format specifier ('%c','%d','%f','%g','%s' only)");
             }
             specs[idxs[i++]] = *f;
             arg_cnt++;
@@ -430,7 +430,7 @@ INTERNAL int errtxtf(const int error_number, struct zint_symbol *symbol, const i
     if (have_num_arg && have_unnum_arg) {
         if (!(symbol->debug & ZINT_DEBUG_TEST)) assert(0);
         return errtxt(ZINT_ERROR_ENCODING_PROBLEM, symbol, 0,
-                            "Internal error: mixed numbered and unnumbered format specifiers");
+                        "Internal error: mixed numbered and unnumbered format specifiers");
     }
 
     /* Get arguments */
@@ -440,7 +440,7 @@ INTERNAL int errtxtf(const int error_number, struct zint_symbol *symbol, const i
             cs[i] = va_arg(ap, int);
         } else if (specs[i] == 'd') {
             if (dpads[i][0]) {
-                char dpad_fmt[30]; /* Make 30 to suppress GNU c "-Wformat-overflow=" false positive */
+                char dpad_fmt[30]; /* Make 30 to suppress gcc 14 "-Wformat-overflow=" false positive */
                 sprintf(dpad_fmt, "%%0%sd", dpads[i]); /* TODO: keep `dpads` separate else last mentioned trumps */
                 sprintf(dfgs[i], dpad_fmt, va_arg(ap, int));
             } else {
diff --git a/backend/tests/test_library.c b/backend/tests/test_library.c
index 7573b060..937f5150 100644
--- a/backend/tests/test_library.c
+++ b/backend/tests/test_library.c
@@ -1041,12 +1041,12 @@ static void test_encode_file_too_large(const testCtx *const p_ctx) {
 static void test_encode_file_unreadable(const testCtx *const p_ctx) {
 #ifndef _WIN32
     int ret;
-    struct zint_symbol *symbol = NULL;
     char filename[] = "in.bin";
 
     char buf[ZINT_MAX_DATA_LEN + 1] = {0};
     int fd;
 #endif
+    struct zint_symbol *symbol = NULL;
 
     (void)p_ctx;
 
@@ -1227,7 +1227,7 @@ static void test_bad_args(const testCtx *const p_ctx) {
         "Error 200: Input segments NULL",
         "Error 239: Filename NULL",
         "Error 778: No input data",
-        "Error 229: Unable to read input file (2: No such file or directory)",
+        "Error 229: Unable to read input file (", /* Excluding OS-dependent `errno` stuff */
         "Error 771: Too many input segments (maximum 256)",
         "Error 205: No input data",
         "Error 777: Input too long",
@@ -1331,16 +1331,16 @@ static void test_bad_args(const testCtx *const p_ctx) {
     assert_zero(strcmp(expected[3], symbol->errtxt), "ZBarcode_Encode_Segs_and_Buffer_Vector(symbol, &seg_empty, 1, 0) strcmp(%s, %s) != 0\n", expected[3], symbol->errtxt);
     symbol->errtxt[0] = '\0';
     assert_equal(ZBarcode_Encode_File(symbol, empty), ZINT_ERROR_INVALID_DATA, "ZBarcode_Encode_File(symbol, empty) != ZINT_ERROR_INVALID_DATA\n");
-    assert_zero(strcmp(expected[4], symbol->errtxt), "ZBarcode_Encode_File(symbol, empty) strcmp(%s, %s) != 0\n", expected[4], symbol->errtxt);
+    assert_zero(strncmp(expected[4], symbol->errtxt, strlen(expected[4])), "ZBarcode_Encode_File(symbol, empty) strncmp(%s, %s, %d) != 0\n", expected[4], symbol->errtxt, (int) strlen(expected[4]));
     symbol->errtxt[0] = '\0';
     assert_equal(ZBarcode_Encode_File_and_Print(symbol, empty, 0), ZINT_ERROR_INVALID_DATA, "ZBarcode_Encode_File_and_Print(symbol, empty, 0) != ZINT_ERROR_INVALID_DATA\n");
-    assert_zero(strcmp(expected[4], symbol->errtxt), "ZBarcode_Encode_File_and_Print(symbol, empty, 0) strcmp(%s, %s) != 0\n", expected[4], symbol->errtxt);
+    assert_zero(strncmp(expected[4], symbol->errtxt, strlen(expected[4])), "ZBarcode_Encode_File(symbol, empty) strncmp(%s, %s, %d) != 0\n", expected[4], symbol->errtxt, (int) strlen(expected[4]));
     symbol->errtxt[0] = '\0';
     assert_equal(ZBarcode_Encode_File_and_Buffer(symbol, empty, 0), ZINT_ERROR_INVALID_DATA, "ZBarcode_Encode_File_and_Buffer(symbol, empty, 0) != ZINT_ERROR_INVALID_DATA\n");
-    assert_zero(strcmp(expected[4], symbol->errtxt), "ZBarcode_Encode_File_and_Buffer(symbol, empty, 0) strcmp(%s, %s) != 0\n", expected[4], symbol->errtxt);
+    assert_zero(strncmp(expected[4], symbol->errtxt, strlen(expected[4])), "ZBarcode_Encode_File(symbol, empty) strncmp(%s, %s, %d) != 0\n", expected[4], symbol->errtxt, (int) strlen(expected[4]));
     symbol->errtxt[0] = '\0';
     assert_equal(ZBarcode_Encode_File_and_Buffer_Vector(symbol, empty, 0), ZINT_ERROR_INVALID_DATA, "ZBarcode_Encode_File_and_Buffer_Vector(symbol, empty, 0) != ZINT_ERROR_INVALID_DATA\n");
-    assert_zero(strcmp(expected[4], symbol->errtxt), "ZBarcode_Encode_File_and_Buffer_Vector(symbol, empty, 0) strcmp(%s, %s) != 0\n", expected[4], symbol->errtxt);
+    assert_zero(strncmp(expected[4], symbol->errtxt, strlen(expected[4])), "ZBarcode_Encode_File(symbol, empty) strncmp(%s, %s, %d) != 0\n", expected[4], symbol->errtxt, (int) strlen(expected[4]));
 
     /* Bad seg_count */
     symbol->errtxt[0] = '\0';