[PATCH wayland] scanner: Fail on empty enumerations

[Jonas Ådahl]

Without this patch, the scanner would generate invalid C which wouldn't
compile anyway, so lets be nice and fail earlier and point out where the
error is.

Signed-off-by: Jonas Ådahl <jadahl at gmail.com>
---
 src/scanner.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/scanner.c b/src/scanner.c
index 1f1e59a..64431a1 100644
--- a/src/scanner.c
+++ b/src/scanner.c
@@ -551,6 +551,10 @@ end_element(void *data, const XML_Char *name)
 		   strcmp(name, "event") == 0) {
 		ctx->message = NULL;
 	} else if (strcmp(name, "enum") == 0) {
+		if (wl_list_empty(&ctx->enumeration->entry_list)) {
+			fail(&ctx->loc, "enumeration %s was empty",
+			     ctx->enumeration->name);
+		}
 		ctx->enumeration = NULL;
 	}
 }
-- 
2.1.0