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