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-rw-r--r--src/common/util.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/common/util.c b/src/common/util.c
index fef30e4a5f..a2c3dc7550 100644
--- a/src/common/util.c
+++ b/src/common/util.c
@@ -5734,13 +5734,14 @@ clamp_double_to_int64(double number)
{
int exponent;
-#if defined(__MINGW32__) || defined(__MINGW64__)
+#if (defined(__MINGW32__) || defined(__MINGW64__)) && GCC_VERSION >= 409
/*
Mingw's math.h uses gcc's __builtin_choose_expr() facility to declare
isnan, isfinite, and signbit. But as implemented in at least some
versions of gcc, __builtin_choose_expr() can generate type warnings
even from branches that are not taken. So, suppress those warnings.
*/
+#define PROBLEMATIC_FLOAT_CONVERSION_WARNING
DISABLE_GCC_WARNING(float-conversion)
#endif
/* NaN is a special case that can't be used with the logic below. */
@@ -5768,7 +5769,7 @@ DISABLE_GCC_WARNING(float-conversion)
/* Handle infinities and finite numbers with magnitude >= 2^63. */
return signbit(number) ? INT64_MIN : INT64_MAX;
-#if defined(__MINGW32__) || defined(__MINGW64__)
+#ifdef PROBLEMATIC_FLOAT_CONVERSION_WARNING
ENABLE_GCC_WARNING(float-conversion)
#endif
}