The following avoids ICEing with a mismatched prototype for alloca
and -Walloca-larger-than using irange for checks which doesn't
like mismatched types.
Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.
PR tree-optimization/107898
* gimple-ssa-warn-alloca.cc (alloca_call_type): Check
the type of the alloca argument is compatible with size_t
before querying ranges.
---
gcc/gimple-ssa-warn-alloca.cc | 1 +
1 file changed, 1 insertion(+)
diff --git a/gcc/gimple-ssa-warn-alloca.cc b/gcc/gimple-ssa-warn-alloca.cc
index 83a241a3a4b..dcc62ca77bf 100644
--- a/gcc/gimple-ssa-warn-alloca.cc
+++ b/gcc/gimple-ssa-warn-alloca.cc
@@ -217,6 +217,7 @@ alloca_call_type (gimple *stmt, bool is_vla)
int_range_max r;
if (warn_limit_specified_p (is_vla)
&& TREE_CODE (len) == SSA_NAME
+ && types_compatible_p (TREE_TYPE (len), size_type_node)
&& get_range_query (cfun)->range_of_expr (r, len, stmt)
&& !r.varying_p ())
{
--
2.35.3
