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-rw-r--r--gnu/local.mk1
-rw-r--r--gnu/packages/patches/grantlee-fix-i586-precision.patch40
-rw-r--r--gnu/packages/qt.scm3
3 files changed, 43 insertions, 1 deletions
diff --git a/gnu/local.mk b/gnu/local.mk
index bd5bd0f7aa..71f12aaa86 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -1316,6 +1316,7 @@ dist_patch_DATA = \
%D%/packages/patches/gpm-glibc-2.26.patch \
%D%/packages/patches/gpodder-disable-updater.patch \
%D%/packages/patches/gpsbabel-fix-i686-test.patch \
+ %D%/packages/patches/grantlee-fix-i586-precision.patch \
%D%/packages/patches/grep-timing-sensitive-test.patch \
%D%/packages/patches/grfcodec-gcc-compat.patch \
%D%/packages/patches/gromacs-tinyxml2.patch \
diff --git a/gnu/packages/patches/grantlee-fix-i586-precision.patch b/gnu/packages/patches/grantlee-fix-i586-precision.patch
new file mode 100644
index 0000000000..f3d4384b5b
--- /dev/null
+++ b/gnu/packages/patches/grantlee-fix-i586-precision.patch
@@ -0,0 +1,40 @@
+From 13094b78a790786030a468453c2b3ead4c7fd9cf Mon Sep 17 00:00:00 2001
+From: Fabian Vogt <fabian@ritter-vogt.de>
+Date: Sun, 13 Nov 2022 14:01:21 +0100
+Subject: [PATCH] Fix formatting of some larger file sizes on 32bit x86
+
+With the x87 FPU available, GCC uses long double precision for some variables.
+Due to the function call passing a double, some comparisons break down.
+That resulted in "1.00 YB" being printed as "1000.00 ZB" instead.
+
+Fixes #85
+---
+ templates/lib/util.cpp | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/templates/lib/util.cpp b/templates/lib/util.cpp
+index 504674a7..a0381c59 100644
+--- a/templates/lib/util.cpp
++++ b/templates/lib/util.cpp
+@@ -23,6 +23,7 @@
+ #include "metaenumvariable_p.h"
+ #include "metatype.h"
+
++#include <cfloat>
+ #include <QtCore/QStringList>
+
+ QString Grantlee::unescapeStringLiteral(const QString &input)
+@@ -212,7 +213,13 @@ std::pair<qreal, QString> Grantlee::calcFileSize(qreal size, int unitSystem,
+ bool found = false;
+ int count = 0;
+ const qreal baseVal = (_unitSystem == 10) ? 1000.0F : 1024.0F;
++#if FLT_EVAL_METHOD == 2
++ // Avoid that this is treated as long double, as the increased
++ // precision breaks the comparison below.
++ volatile qreal current = 1.0F;
++#else
+ qreal current = 1.0F;
++#endif
+ int units = decimalUnits.size();
+ while (!found && (count < units)) {
+ current *= baseVal;
diff --git a/gnu/packages/qt.scm b/gnu/packages/qt.scm
index ba3d4f1c00..8e54d3b696 100644
--- a/gnu/packages/qt.scm
+++ b/gnu/packages/qt.scm
@@ -320,7 +320,8 @@ applications on Wayland.")
(commit (string-append "v" version))))
(file-name (git-file-name name version))
(sha256
- (base32 "1ipnkdi8wgv519mvwa5zxlz20wipbypyfixjv2qdfd9vl1pznwvs"))))
+ (base32 "1ipnkdi8wgv519mvwa5zxlz20wipbypyfixjv2qdfd9vl1pznwvs"))
+ (patches (search-patches "grantlee-fix-i586-precision.patch"))))
(native-inputs
;; Optional: lcov and cccc, both are for code coverage
(list doxygen))