C89 comments.

lib/zip_source_crc.c

diff --git a/lib/zip_source_crc.c b/lib/zip_source_crc.c
index f1faf76..d84c3e7 100644
--- a/lib/zip_source_crc.c
+++ b/lib/zip_source_crc.c
@@ -39,12 +39,12 @@
 #include "zipint.h"
 
 struct crc_context {
-    int validate; // whether to check CRC on EOF and return error on mismatch
-    int crc_complete; // whether CRC was computed for complete file
+    int validate; /* whether to check CRC on EOF and return error on mismatch */
+    int crc_complete; /* whether CRC was computed for complete file */
     zip_error_t error;
     zip_uint64_t size;
-    zip_uint64_t position; // current reading position
-    zip_uint64_t crc_position; // how far we've computed the CRC
+    zip_uint64_t position; /* current reading position */
+    zip_uint64_t crc_position; /* how far we've computed the CRC */
     zip_uint32_t crc;
 };
 

lib/zipint.h

diff --git a/lib/zipint.h b/lib/zipint.h
index 7d108e6..348f90f 100644
--- a/lib/zipint.h
+++ b/lib/zipint.h
@@ -435,7 +435,7 @@
 
 struct zip_filelist {
     zip_uint64_t idx;
-// TODO    const char *name;
+/* TODO    const char *name; */
 };
 
 typedef struct zip_filelist zip_filelist_t;

regress/malloc.c

diff --git a/regress/malloc.c b/regress/malloc.c
index 46f9a6c..67258f9 100644
--- a/regress/malloc.c
+++ b/regress/malloc.c
@@ -33,7 +33,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-//#include <string.h>
+/* #include <string.h> */
 #include <errno.h>
 #define __USE_GNU
 #include <dlfcn.h>
@@ -49,9 +49,9 @@
 
 static const char *myname = NULL;
 
-// TODO: add sentinel -- check if particular size is malloced before doing other stuff
-// TODO: catch free for sentinel too
-// TODO: optionally, catch malloc of particular size
+/* TODO: add sentinel -- check if particular size is malloced before doing other stuff */
+/* TODO: catch free for sentinel too */
+/* TODO: optionally, catch malloc of particular size */
 
 static void
 init(void)