teach sparse about C17

No real support is done here (or is needed) but the __STDC_VERSION__
will return the correct value.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>

2 files changed, 15 insertions, 0 deletions

diff --git a/lib.c b/lib.c
index 904e0ad1..711e8fbe 100644
--- a/lib.c
+++ b/lib.c
@@ -1079,6 +1079,15 @@ static char **handle_switch_s(const char *arg, char **next)
 		else if (!strcmp(arg, "gnu11"))
 			standard = STANDARD_GNU11;
 
+		else if (!strcmp(arg, "c17") ||
+			 !strcmp(arg, "c18") ||
+			 !strcmp(arg, "iso9899:2017") ||
+			 !strcmp(arg, "iso9899:2018"))
+			standard = STANDARD_C17;
+		else if (!strcmp(arg, "gnu17") ||
+			 !strcmp(arg, "gnu18"))
+			standard = STANDARD_GNU17;
+
 		else
 			die ("Unsupported C dialect");
 	}
@@ -1421,6 +1430,10 @@ static void predefined_macros(void)
 	case STANDARD_GNU11:
 		predefine("__STDC_VERSION__", 1, "201112L");
 		break;
+	case STANDARD_C17:
+	case STANDARD_GNU17:
+		predefine("__STDC_VERSION__", 1, "201710L");
+		break;
 	}
 	if (!(standard & STANDARD_GNU) && (standard != STANDARD_NONE))
 		predefine("__STRICT_ANSI__", 1, "1");
diff --git a/lib.h b/lib.h
index 7958359c..3e565c6f 100644
--- a/lib.h
+++ b/lib.h
@@ -235,6 +235,8 @@ enum standard {
 	STANDARD_GNU99 = STANDARD_C99 | STANDARD_GNU,
 	STANDARD_C11,
 	STANDARD_GNU11 = STANDARD_C11 | STANDARD_GNU,
+	STANDARD_C17,
+	STANDARD_GNU17 = STANDARD_C17 | STANDARD_GNU,
 };
 extern enum standard standard;