diff --git a/sv-parser-pp/src/preprocess.rs b/sv-parser-pp/src/preprocess.rs
index 82bfb7c..2f09140 100644
--- a/sv-parser-pp/src/preprocess.rs
+++ b/sv-parser-pp/src/preprocess.rs
@@ -1409,6 +1409,16 @@ mod tests {
         );
     } // }}}
 
+    #[test]
+    #[ignore = "Exposes unfixed PP parser bug."]
+    fn macro_comment_embedded() { // {{{
+        let (ret, _) = preprocess_usualargs("macro_comment_embedded.sv").unwrap();
+        assert_eq!(
+            ret.text(),
+            testfile_contents("expected/macro_comment_embedded.sv")
+        );
+    } // }}}
+
     #[test]
     fn macro_delimiters() { // {{{
         let (ret, _) = preprocess_usualargs("macro_delimiters.sv").unwrap();
diff --git a/sv-parser-pp/testcases/expected/macro_comment_embedded.sv b/sv-parser-pp/testcases/expected/macro_comment_embedded.sv
new file mode 100644
index 0000000..4deadf2
--- /dev/null
+++ b/sv-parser-pp/testcases/expected/macro_comment_embedded.sv
@@ -0,0 +1,54 @@
+
+// Unusual case where a preprocessor comment (same symbol as a single-line
+// comment, "//") is embedded in an emitted C-style comment.
+// This should not preprocess, but not parse, i.e. in the emitted text, there
+// will be an opening // C-style comment symbol "/*" but no closing symbol "*/".
+`define A \
+  A1 \
+  A2 /* emitted */ \
+  A3 /* // not emitted, unclosed C comment */ \
+  A4
+
+// Same as A, but without space before "//".
+// This may catch bad parsers where the first "/" in "//" is treated as part of
+// the closing "*/".
+`define B \
+  B1 \
+  B2 /* emitted */ \
+  B3 /*// not emitted, unclosed C comment */ \
+  B4
+
+// Another variation on B.
+`define C \
+  C1 \
+  C2 /* emitted */ \
+  C3 //* not emitted, not a C comment */ \
+  C4
+
+// Another variation on B.
+`define D \
+  D1 \
+  D2 /* emitted */ \
+  D3 /* emitted, unclosed C comment *// \
+  D4
+
+  A1 
+  A2 /* emitted */ 
+  A3 /* 
+  A4
+
+  B1 
+  B2 /* emitted */ 
+  B3 /*
+  B4
+
+  C1 
+  C2 /* emitted */ 
+  C3 //
+  C4
+
+  D1 
+  D2 /* emitted */ 
+  D3 /* emitted, unclosed C comment *
+  D4
+
diff --git a/sv-parser-pp/testcases/macro_comment_embedded.sv b/sv-parser-pp/testcases/macro_comment_embedded.sv
new file mode 100644
index 0000000..959947e
--- /dev/null
+++ b/sv-parser-pp/testcases/macro_comment_embedded.sv
@@ -0,0 +1,42 @@
+
+// Unusual case where a preprocessor comment (same symbol as a single-line
+// comment, "//") is embedded in an emitted C-style comment.
+// This should not preprocess, but not parse, i.e. in the emitted text, there
+// will be an opening // C-style comment symbol "/*" but no closing symbol "*/".
+`define A \
+  A1 \
+  A2 /* emitted */ \
+  A3 /* // not emitted, unclosed C comment */ \
+  A4
+
+// Same as A, but without space before "//".
+// This may catch bad parsers where the first "/" in "//" is treated as part of
+// the closing "*/".
+`define B \
+  B1 \
+  B2 /* emitted */ \
+  B3 /*// not emitted, unclosed C comment */ \
+  B4
+
+// Another variation on B.
+`define C \
+  C1 \
+  C2 /* emitted */ \
+  C3 //* not emitted, C comment is closed */ \
+  C4
+
+// Another variation on B.
+`define D \
+  D1 \
+  D2 /* emitted */ \
+  D3 /* emitted, unclosed C comment *// \
+  D4
+
+`A
+
+`B
+
+`C
+
+`D
+