c: as a hack, warn for zero-length array instead of error

Treated as unsized array T[]. This shows up in some linux headers
as a non-standard way to have flexible array members.

1 files changed, 1 insertions, 1 deletions

diff --git a/c/c.c b/c/c.c
index 49b17b2..a16bf80 100644
--- a/c/c.c
+++ b/c/c.c
@@ -2429,7 +2429,7 @@ decltypes(struct comp *cm, struct decllist *list, const char **name, struct span
             } else if (ex.u > (1ull << (8*sizeof n)) - 1) {
                error(&ex.span, "array too long (%ul)", ex.u);
             } else if (ex.u == 0) {
-               error(&ex.span, "array cannot have zero length");
+               warn(&ex.span, "array cannot have zero length");
             } else {
                n = ex.u;
             }