Tested x86_64-pc-linux-gnu, applying to trunk.
-- 8< --
The code for handling signed + typedef was breaking on __int128_t, because
it isn't a proper typedef: it doesn't have DECL_ORIGINAL_TYPE.
PR c++/108099
gcc/cp/ChangeLog:
* decl.cc (grokdeclarator): Handle non-typedef typedef_decl.
gcc/testsuite/ChangeLog:
* g++.dg/ext/int128-7.C: New test.
---
gcc/cp/decl.cc | 11 ++++++++---
gcc/testsuite/g++.dg/ext/int128-7.C | 4 ++++
2 files changed, 12 insertions(+), 3 deletions(-)
create mode 100644 gcc/testsuite/g++.dg/ext/int128-7.C
diff --git a/gcc/cp/decl.cc b/gcc/cp/decl.cc
index 30c7470974d..b1603859644 100644
--- a/gcc/cp/decl.cc
+++ b/gcc/cp/decl.cc
@@ -12440,10 +12440,15 @@ grokdeclarator (const cp_declarator *declarator,
{
if (typedef_decl)
{
- pedwarn (loc, OPT_Wpedantic, "%qs specified with %qT",
- key, type);
+ pedwarn (loc, OPT_Wpedantic, "%qs specified with %qD",
+ key, typedef_decl);
ok = !flag_pedantic_errors;
- type = DECL_ORIGINAL_TYPE (typedef_decl);
+ if (is_typedef_decl (typedef_decl))
+ type = DECL_ORIGINAL_TYPE (typedef_decl);
+ else
+ /* PR108099: __int128_t comes from c_common_nodes_and_builtins,
+ and is not built as a typedef. */
+ type = TREE_TYPE (typedef_decl);
typedef_decl = NULL_TREE;
}
else if (declspecs->decltype_p)
diff --git a/gcc/testsuite/g++.dg/ext/int128-7.C
b/gcc/testsuite/g++.dg/ext/int128-7.C
new file mode 100644
index 00000000000..bf5e8c40a4b
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/int128-7.C
@@ -0,0 +1,4 @@
+// PR c++/108099
+// { dg-do compile { target { c++11 && int128 } } }
+
+using i128 = signed __int128_t; // { dg-error "specified with" }
base-commit: 68c5d92a1390ecccb61d3600a95eeff6caf7ccdf
--
2.31.1
