From 69b4a9d21d00e1f72b52e818cc059ee1642f263e Mon Sep 17 00:00:00 2001 From: Francisco Jerez Date: Sat, 24 Feb 2018 18:37:34 -0800 Subject: [PATCH] util/bitset: Make C++ wrapper trivially constructible. In order to fix a build failure on compilers not implementing unrestricted unions, which is a C++11 feature. v2: Provide signed integer comparison and assignment operators instead of BITSET_WORD ones to avoid spurious ambiguity warnings on comparisons with a signed integer literal. Fixes: ba79a90fb52e1e81fb "glsl: Switch ast_type_qualifier to a 128-bit bitset." Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105238 Tested-by: Roland Scheidegger Tested-By: George Kyriazis Reviewed-by: Roland Scheidegger --- src/compiler/glsl/ast.h | 2 -- src/compiler/glsl/glsl_parser.yy | 1 - src/util/bitset.h | 37 ++++++++++++++++++++----------------- 3 files changed, 20 insertions(+), 20 deletions(-) diff --git a/src/compiler/glsl/ast.h b/src/compiler/glsl/ast.h index e5e4b57..a1ec0d5 100644 --- a/src/compiler/glsl/ast.h +++ b/src/compiler/glsl/ast.h @@ -477,8 +477,6 @@ struct ast_type_qualifier { DECLARE_BITSET_T(bitset_t, 128); union flags { - flags() : i(0) {} - struct { unsigned invariant:1; unsigned precise:1; diff --git a/src/compiler/glsl/glsl_parser.yy b/src/compiler/glsl/glsl_parser.yy index f1986ed..e5ea41d 100644 --- a/src/compiler/glsl/glsl_parser.yy +++ b/src/compiler/glsl/glsl_parser.yy @@ -96,7 +96,6 @@ static bool match_layout_qualifier(const char *s1, const char *s2, %parse-param {struct _mesa_glsl_parse_state *state} %union { - YYSTYPE() {} int n; int64_t n64; float real; diff --git a/src/util/bitset.h b/src/util/bitset.h index 7bb5f3c..b4c2152 100644 --- a/src/util/bitset.h +++ b/src/util/bitset.h @@ -142,23 +142,6 @@ __bitset_next_set(unsigned i, BITSET_WORD *tmp, * it as, and N is the number of bits in the bitset. */ #define DECLARE_BITSET_T(T, N) struct T { \ - /* XXX - Replace this with an implicitly-defined \ - * constructor when support for C++11 defaulted \ - * constructors can be assumed (available on GCC 4.4 and \ - * later) in order to make the object trivially \ - * constructible like a fundamental integer type for \ - * convenience. \ - */ \ - T() \ - { \ - } \ - \ - T(BITSET_WORD x) \ - { \ - for (unsigned i = 0; i < BITSET_WORDS(N); i++, x = 0) \ - words[i] = x; \ - } \ - \ EXPLICIT_CONVERSION \ operator bool() const \ { \ @@ -168,6 +151,13 @@ __bitset_next_set(unsigned i, BITSET_WORD *tmp, return false; \ } \ \ + T & \ + operator=(int x) \ + { \ + const T c = {{ (BITSET_WORD)x }}; \ + return *this = c; \ + } \ + \ friend bool \ operator==(const T &b, const T &c) \ { \ @@ -180,6 +170,19 @@ __bitset_next_set(unsigned i, BITSET_WORD *tmp, return !(b == c); \ } \ \ + friend bool \ + operator==(const T &b, int x) \ + { \ + const T c = {{ (BITSET_WORD)x }}; \ + return b == c; \ + } \ + \ + friend bool \ + operator!=(const T &b, int x) \ + { \ + return !(b == x); \ + } \ + \ friend T \ operator~(const T &b) \ { \ -- 2.7.4