Hello,
An upcoming patch exposes a bug in gimplify_modify_expr. There, we try
not to create DECL_DEBUG_EXPR links across functions, however we don't
check that *FROM_P actually belongs to the current function before
modifying it. This patch fixes this oversight.
Bootstrapped and regtested on x86_64-linux. Ok to commit? Thank you in
advance!
gcc/
* gimplify.c (gimplify_modify_expr): Don't create a
DECL_DEBUG_EXPR link if *FROM_P does not belong to the current
function.
---
gcc/gimplify.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/gcc/gimplify.c b/gcc/gimplify.c
index 455a6993e15..2c7fc9fabd1 100644
--- a/gcc/gimplify.c
+++ b/gcc/gimplify.c
@@ -5580,7 +5580,8 @@ gimplify_modify_expr (tree *expr_p, gimple_seq *pre_p,
gimple_seq *post_p,
&& DECL_IGNORED_P (*from_p)
&& DECL_P (*to_p)
&& !DECL_IGNORED_P (*to_p)
- && decl_function_context (*to_p) == current_function_decl)
+ && decl_function_context (*to_p) == current_function_decl
+ && decl_function_context (*from_p) == current_function_decl)
{
if (!DECL_NAME (*from_p) && DECL_NAME (*to_p))
DECL_NAME (*from_p)
--
2.13.0
