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Icon: work around compile optimization bug

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We are observing that the strings become sequences of zeros in
release builds, possibly triggered by qOffsetStringArray being used
in a static constexpr function to initialize a constexpr array.

Pull the array out of the function as a static on translation unit level,
which is a pattern we use regularly elsewhere in Qt.

Change-Id: I69c8cfe4e2d6d7d4659edda621ba1afe9768035b
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
(cherry picked from commit 302823d73b8ca27e67e703de8316092d8b4d5715)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
This commit is contained in:
Volker Hilsheimer 2024-03-04 12:24:21 +01:00 committed by Qt Cherry-pick Bot
parent 106442586e
commit 5997821ece
1 changed files with 158 additions and 158 deletions
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14
src/gui/image/qicon.cpp
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@ -1400,9 +1400,7 @@ bool QIcon::hasThemeIcon(const QString &name)
return icon.name() == name;
}
static constexpr QLatin1StringView themeIconName(QIcon::ThemeIcon icon)
{
constexpr auto mapping = qOffsetStringArray(
static constexpr auto themeIconMapping = qOffsetStringArray(
"address-book-new",
"application-exit",
"appointment-new",
@ -1555,13 +1553,15 @@ static constexpr QLatin1StringView themeIconName(QIcon::ThemeIcon icon)
"weather-showers",
"weather-snow",
"weather-storm"
);
static_assert(QIcon::ThemeIcon::NThemeIcons == QIcon::ThemeIcon(mapping.count()));
);
static_assert(QIcon::ThemeIcon::NThemeIcons == QIcon::ThemeIcon(themeIconMapping.count()));
static constexpr QLatin1StringView themeIconName(QIcon::ThemeIcon icon)
{
using ThemeIconIndex = std::underlying_type_t<QIcon::ThemeIcon>;
const auto index = static_cast<ThemeIconIndex>(icon);
Q_ASSERT(index < mapping.count());
return QLatin1StringView(mapping.viewAt(index));
Q_ASSERT(index < themeIconMapping.count());
return QLatin1StringView(themeIconMapping.viewAt(index));
}
/*!