diff --git a/src/vterm/vterm.h b/src/vterm/vterm.h
index 929418c63a..0f23bbc0e2 100644
--- a/src/vterm/vterm.h
+++ b/src/vterm/vterm.h
@@ -219,9 +219,9 @@ typedef enum {
 
 typedef struct {
   const char *str;
-  size_t      len : 30;
-  bool        initial : 1;
-  bool        final : 1;
+  size_t      len;
+  bool        initial;
+  bool        final;
 } VTermStringFragment;
 
 typedef union {
@@ -293,15 +293,15 @@ typedef enum {
 typedef struct {
   const uint32_t *chars;
   int             width;
-  unsigned int    protected_cell:1;  /* DECSCA-protected against DECSEL/DECSED */
-  unsigned int    dwl:1;             /* DECDWL or DECDHL double-width line */
-  unsigned int    dhl:2;             /* DECDHL double-height line (1=top 2=bottom) */
+  unsigned int    protected_cell;  /* DECSCA-protected against DECSEL/DECSED */
+  unsigned int    dwl;             /* DECDWL or DECDHL double-width line */
+  unsigned int    dhl;             /* DECDHL double-height line (1=top 2=bottom) */
 } VTermGlyphInfo;
 
 typedef struct {
-  unsigned int    doublewidth:1;     /* DECDWL or DECDHL line */
-  unsigned int    doubleheight:2;    /* DECDHL line (1=top 2=bottom) */
-  unsigned int    continuation:1;    /* Line is a flow continuation of the previous */
+  unsigned int    doublewidth;     /* DECDWL or DECDHL line */
+  unsigned int    doubleheight;    /* DECDHL line (1=top 2=bottom) */
+  unsigned int    continuation;    /* Line is a flow continuation of the previous */
 } VTermLineInfo;
 
 /* Copies of VTermState fields that the 'resize' callback might have reason to
@@ -499,18 +499,18 @@ void vterm_state_send_selection(VTermState *state, VTermSelectionMask mask, VTer
 // ------------
 
 typedef struct {
-    unsigned int bold      : 1;
-    unsigned int underline : 2;
-    unsigned int italic    : 1;
-    unsigned int blink     : 1;
-    unsigned int reverse   : 1;
-    unsigned int conceal   : 1;
-    unsigned int strike    : 1;
-    unsigned int font      : 4; /* 0 to 9 */
-    unsigned int dwl       : 1; /* On a DECDWL or DECDHL line */
-    unsigned int dhl       : 2; /* On a DECDHL line (1=top 2=bottom) */
-    unsigned int small     : 1;
-    unsigned int baseline  : 2;
+    unsigned int bold;
+    unsigned int underline;
+    unsigned int italic;
+    unsigned int blink;
+    unsigned int reverse;
+    unsigned int conceal;
+    unsigned int strike;
+    unsigned int font; /* 0 to 9 */
+    unsigned int dwl; /* On a DECDWL or DECDHL line */
+    unsigned int dhl; /* On a DECDHL line (1=top 2=bottom) */
+    unsigned int small;
+    unsigned int baseline;
 } VTermScreenCellAttrs;
 
 enum {
diff --git a/test/unit/vterm_spec.lua b/test/unit/vterm_spec.lua
new file mode 100644
index 0000000000..7ede4f71ec
--- /dev/null
+++ b/test/unit/vterm_spec.lua
@@ -0,0 +1,19 @@
+local t = require('test.unit.testutil')
+local itp = t.gen_itp(it)
+
+local vterm = t.cimport('./src/vterm/vterm.h')
+
+-- local function init()
+--     -- if(streq(line, "INIT")) {
+--     --   if(!vt)
+--         local vt = vterm.vterm_new(25, 80);
+--     --
+--     --   vterm_output_set_callback(vt, term_output, NULL);
+--     -- }
+-- end
+
+describe('vterm', function()
+  itp('02parser', function()
+    print('wat')
+  end)
+end)