From df0b092d08028bde10ea0ffc1772a00e8062fd2d Mon Sep 17 00:00:00 2001
From: Tatiana Borisova <tatiana.borisova@qt.io>
Date: Tue, 8 Feb 2022 15:30:56 +0200
Subject: [PATCH] GHS compiler doesn't support signaling NaNs for double

- has_signaling_NaN returns TRUE by mistake, will be fixed in future compiler releases.

Task-number: QTBUG-99123
Pick-to: 6.2 6.3
Change-Id: I3f2af7b5328b49d7ceffa548461d1d6bf72ba7ed
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
---
 configure.cmake | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/configure.cmake b/configure.cmake
index c74847f5f2..879764aca7 100644
--- a/configure.cmake
+++ b/configure.cmake
@@ -225,7 +225,11 @@ qt_config_compile_test("separate_debug_info"
 qt_config_compile_test(signaling_nan
     LABEL "Signaling NaN for doubles"
     CODE
-"#include <limits>
+"#if defined(__ghs)  && (__GHS_VERSION_NUMBER <= 202014)
+#  error Signal NaNs are not supported by GHS compiler, but has_signaling_NaN returns TRUE. Will be fixed in future compiler releases.
+#endif
+
+#include <limits>
 
 int main(void)
 {