This missing copying exposed a type mismatch in the IL.
Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.
2021-05-28 Richard Biener <rguent...@suse.de>
* tree-inline.c (copy_bb): When processing __builtin_va_arg_pack
copy fntype from original call.
* gcc.dg/pr100791.c: New testcase.
---
gcc/testsuite/gcc.dg/pr100791.c | 9 +++++++++
gcc/tree-inline.c | 1 +
2 files changed, 10 insertions(+)
create mode 100644 gcc/testsuite/gcc.dg/pr100791.c
diff --git a/gcc/testsuite/gcc.dg/pr100791.c b/gcc/testsuite/gcc.dg/pr100791.c
new file mode 100644
index 00000000000..96cf34f14a4
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr100791.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* { dg-options "" } */
+
+static inline int __attribute__((__always_inline__))
+foo ()
+{
+ return log_bad_request(0, __builtin_va_arg_pack()); /* { dg-warning
"implicit" } */
+}
+void log_bad_request() { foo (0); } /* { dg-warning "conflicting types" } */
diff --git a/gcc/tree-inline.c b/gcc/tree-inline.c
index 1d13e7f5aca..d38e8617e3d 100644
--- a/gcc/tree-inline.c
+++ b/gcc/tree-inline.c
@@ -2100,6 +2100,7 @@ copy_bb (copy_body_data *id, basic_block bb,
GF_CALL_VA_ARG_PACK. */
gimple_call_copy_flags (new_call, call_stmt);
gimple_call_set_va_arg_pack (new_call, false);
+ gimple_call_set_fntype (new_call, gimple_call_fntype (call_stmt));
/* location includes block. */
gimple_set_location (new_call, gimple_location (stmt));
gimple_call_set_lhs (new_call, gimple_call_lhs (call_stmt));
--
2.26.2
