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* [gcc/devel/rust/master] Add guards against getting data from an empty vector
@ 2022-08-31 13:57 Thomas Schwinge
  0 siblings, 0 replies; only message in thread
From: Thomas Schwinge @ 2022-08-31 13:57 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:5175404928bc5081506d0eb4cab193e8689f879b

commit 5175404928bc5081506d0eb4cab193e8689f879b
Author: Philip Herron <philip.herron@embecosm.com>
Date:   Fri Aug 26 20:52:35 2022 +0100

    Add guards against getting data from an empty vector

Diff:
---
 gcc/rust/typecheck/rust-tyctx.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gcc/rust/typecheck/rust-tyctx.cc b/gcc/rust/typecheck/rust-tyctx.cc
index d8a49e8b9ea..c46d5909c94 100644
--- a/gcc/rust/typecheck/rust-tyctx.cc
+++ b/gcc/rust/typecheck/rust-tyctx.cc
@@ -142,12 +142,14 @@ TypeCheckContext::push_return_type (TypeCheckContextItem item,
 void
 TypeCheckContext::pop_return_type ()
 {
+  rust_assert (!return_type_stack.empty ());
   return_type_stack.pop_back ();
 }
 
 TypeCheckContextItem &
 TypeCheckContext::peek_context ()
 {
+  rust_assert (!return_type_stack.empty ());
   return return_type_stack.back ().first;
 }

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