2 files changed, 91 insertions, 1 deletions
diff --git a/ext/pcre/php_pcre.c b/ext/pcre/php_pcre.c
index 9e2187d649..07abff432f 100644
--- a/ext/pcre/php_pcre.c
+++ b/ext/pcre/php_pcre.c
@@ -1562,7 +1562,9 @@ PHPAPI void php_pcre_split_impl(pcre_cache_entry *pce, char *subject, int subjec
 	}
 
 
-	if (!no_empty || start_offset != subject_len)
+	start_offset = last_match - subject; /* the offset might have been incremented, but without further successful matches */
+
+	if (!no_empty || start_offset < subject_len)
 	{
 		if (offset_capture) {
 			/* Add the last (match, offset) pair to the return value */
diff --git a/ext/pcre/tests/bug42945.phpt b/ext/pcre/tests/bug42945.phpt
new file mode 100644
index 0000000000..c6d2b82493
--- /dev/null
+++ b/ext/pcre/tests/bug42945.phpt
@@ -0,0 +1,88 @@
+--TEST--
+Bug #42945 (preg_split() swallows part of the string)
+--FILE--
+<?php
+
+var_dump(preg_match_all('/\b/', "a'", $m, PREG_OFFSET_CAPTURE));
+var_dump($m);
+
+var_dump(preg_split('/\b/', "a'"));
+var_dump(preg_split('/\b/', "a'", -1, PREG_SPLIT_OFFSET_CAPTURE));
+var_dump(preg_split('/\b/', "a'", -1, PREG_SPLIT_NO_EMPTY));
+var_dump(preg_split('/\b/', "a'", -1, PREG_SPLIT_NO_EMPTY|PREG_SPLIT_OFFSET_CAPTURE));
+
+?>
+--EXPECT--
+int(2)
+array(1) {
+  [0]=>
+  array(2) {
+    [0]=>
+    array(2) {
+      [0]=>
+      string(0) ""
+      [1]=>
+      int(0)
+    }
+    [1]=>
+    array(2) {
+      [0]=>
+      string(0) ""
+      [1]=>
+      int(1)
+    }
+  }
+}
+array(3) {
+  [0]=>
+  string(0) ""
+  [1]=>
+  string(1) "a"
+  [2]=>
+  string(1) "'"
+}
+array(3) {
+  [0]=>
+  array(2) {
+    [0]=>
+    string(0) ""
+    [1]=>
+    int(0)
+  }
+  [1]=>
+  array(2) {
+    [0]=>
+    string(1) "a"
+    [1]=>
+    int(0)
+  }
+  [2]=>
+  array(2) {
+    [0]=>
+    string(1) "'"
+    [1]=>
+    int(1)
+  }
+}
+array(2) {
+  [0]=>
+  string(1) "a"
+  [1]=>
+  string(1) "'"
+}
+array(2) {
+  [0]=>
+  array(2) {
+    [0]=>
+    string(1) "a"
+    [1]=>
+    int(0)
+  }
+  [1]=>
+  array(2) {
+    [0]=>
+    string(1) "'"
+    [1]=>
+    int(1)
+  }
+}