tools/gcc-plugin: support [un]signed in pragma

Need `unsigned char *` for `%pHX`.

Signed-off-by: David Lamparter <equinox@diac24.net>

2 files changed, 17 insertions, 2 deletions

diff --git a/tools/gcc-plugins/frr-format.c b/tools/gcc-plugins/frr-format.c
index efb2c6393c..e9f397f225 100644
--- a/tools/gcc-plugins/frr-format.c
+++ b/tools/gcc-plugins/frr-format.c
@@ -4241,6 +4241,11 @@ handle_finish_parse (void *event_data, void *data)
 		  continue;
 		}
 	      node = TREE_TYPE (node);
+
+	      if (etab->t_unsigned)
+		node = c_common_unsigned_type (node);
+	      else if (etab->t_signed)
+		node = c_common_signed_type (node);
 	    }
 
 	  etab->type = node;
@@ -4357,9 +4362,17 @@ handle_pragma_printfrr_ext (cpp_reader *dummy)
   ttype = pragma_lex (&token, &loc);
 
   /* qualifiers */
-  if (ttype == CPP_NAME && !strcmp (IDENTIFIER_POINTER (token), "const"))
+  while (ttype == CPP_NAME)
     {
-      etab->t_const = true;
+      if (!strcmp (IDENTIFIER_POINTER (token), "const"))
+        etab->t_const = true;
+      else if (!strcmp (IDENTIFIER_POINTER (token), "signed"))
+        etab->t_signed = true;
+      else if (!strcmp (IDENTIFIER_POINTER (token), "unsigned"))
+        etab->t_unsigned = true;
+      else
+        break;
+
       ttype = pragma_lex (&token, &loc);
     }
 
diff --git a/tools/gcc-plugins/frr-format.h b/tools/gcc-plugins/frr-format.h
index 87d2049ed4..599dbc56f9 100644
--- a/tools/gcc-plugins/frr-format.h
+++ b/tools/gcc-plugins/frr-format.h
@@ -113,6 +113,8 @@ struct kernel_ext_fmt
 	tree_code type_code;
 	int ptrlevel;
 	bool t_const;
+	bool t_unsigned;
+	bool t_signed;
 	bool warned;
 
 	const char *type_str;