[tor-commits] [trunnel] branch main updated: Do not generate a `truncated:` for u8[] at end of struct

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nickm pushed a commit to branch main
in repository trunnel.

The following commit(s) were added to refs/heads/main by this push:
     new 6d24296  Do not generate a `truncated:` for u8[] at end of struct
6d24296 is described below

commit 6d24296e10554867f974115e341762f06cfdccbf
Author: Nick Mathewson <nickm at torproject.org>
AuthorDate: Thu May 5 08:43:11 2022 -0400

    Do not generate a `truncated:` for u8[] at end of struct
    
    Our previous rule had been that all u8 arrays needed a `truncated:`
    section.  That's fine if the arrays have a length, but not if their
    length extends to the end of the structure: such arrays can't be
    truncated.
---
 lib/trunnel/CodeGen.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/trunnel/CodeGen.py b/lib/trunnel/CodeGen.py
index e7ad11c..22dd8b8 100644
--- a/lib/trunnel/CodeGen.py
+++ b/lib/trunnel/CodeGen.py
@@ -2223,7 +2223,8 @@ class EncodeFnGenerator(CodeGenerator):
 
         self.eltHeader(sva)
         if arrayIsBytes(sva):
-            self.needTruncated = True
+            if sva.widthfield is not None:
+                self.needTruncated = True
             self.format("""
                    {{
                      size_t elt_len = TRUNNEL_DYNARRAY_LEN(&obj->{c_name});

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