From 91cc882245d7d93876d34f4d4c2e425acf48c8bb Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Sat, 26 Mar 2022 08:11:58 +0100 Subject: [PATCH] c++: Fix up __builtin_convertvector parsing Jonathan reported on IRC that we don't parse __builtin_bit_cast (type, val).field etc. The problem is that for these 2 builtins we return from cp_parser_postfix_expression instead of setting postfix_expression to the cp_build_* value and falling through into the postfix regression suffix handling loop. 2022-03-26 Jakub Jelinek * parser.c (cp_parser_postfix_expression) : Don't return cp_build_vec_convert result right away, instead set postfix_expression to it and break. * c-c++-common/builtin-convertvector-3.c: New test. (cherry picked from commit 1806829e08f14e4cacacec43d7845cc2dad2ddc8) --- gcc/cp/parser.c | 6 ++++-- gcc/testsuite/c-c++-common/builtin-convertvector-3.c | 11 +++++++++++ 2 files changed, 15 insertions(+), 2 deletions(-) create mode 100644 gcc/testsuite/c-c++-common/builtin-convertvector-3.c diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c index f48c856fa943..61f2af346889 100644 --- a/gcc/cp/parser.c +++ b/gcc/cp/parser.c @@ -7162,8 +7162,10 @@ cp_parser_postfix_expression (cp_parser *parser, bool address_p, bool cast_p, } /* Look for the closing `)'. */ parens.require_close (parser); - return cp_build_vec_convert (expression, type_location, type, - tf_warning_or_error); + postfix_expression + = cp_build_vec_convert (expression, type_location, type, + tf_warning_or_error); + break; } default: diff --git a/gcc/testsuite/c-c++-common/builtin-convertvector-3.c b/gcc/testsuite/c-c++-common/builtin-convertvector-3.c new file mode 100644 index 000000000000..882cd551ef82 --- /dev/null +++ b/gcc/testsuite/c-c++-common/builtin-convertvector-3.c @@ -0,0 +1,11 @@ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ + +typedef int v4si __attribute__((vector_size (4 * sizeof (int)))); +typedef double v4df __attribute__((vector_size (4 * sizeof (double)))); +double +foo (void) +{ + v4si a = { 1, 2, 3, 4 }; + return __builtin_convertvector (a, v4df)[1]; +} -- 2.47.2