From: H.J. Lu <hjl.tools@gmail.com>
Date: Sat, 14 Dec 2024 11:21:15 +0000 (+0800)
Subject: Replace copysign (0,-1) with -0.0 in initializer
X-Git-Tag: glibc-2.41~330
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7d889b99c1ec62252d2cb3d89ba2956a2d567928;p=thirdparty%2Fglibc.git

Replace copysign (0,-1) with -0.0 in initializer

GCC 4.9 issues an error for copysign in initializer:

In file included from tst-printf-format-p-double.c:20:0:
tst-printf-format-skeleton-double.c:29:3: error: initializer element is not a constant expression [-Werror]
   { -HUGE_VAL, -DBL_MAX, -DBL_MIN, copysign (0, -1), -NAN, NAN, 0, DBL_MIN,
   ^

since it can't fold "copysign (0, -1)".  Replace copysign (0,-1) with -0.0.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
---

diff --git a/stdio-common/tst-printf-format-skeleton-double.c b/stdio-common/tst-printf-format-skeleton-double.c
index 03ac594736..19d75bbcbf 100644
--- a/stdio-common/tst-printf-format-skeleton-double.c
+++ b/stdio-common/tst-printf-format-skeleton-double.c
@@ -26,7 +26,7 @@
 #define PREC DBL_MANT_DIG
 typedef double type_t;
 static const type_t vals[] =
-  { -HUGE_VAL, -DBL_MAX, -DBL_MIN, copysign (0, -1), -NAN, NAN, 0, DBL_MIN,
+  { -HUGE_VAL, -DBL_MAX, -DBL_MIN, -0.0, -NAN, NAN, 0, DBL_MIN,
     DBL_MAX, HUGE_VAL };
 static const char length[] = "";
 
diff --git a/stdio-common/tst-printf-format-skeleton-ldouble.c b/stdio-common/tst-printf-format-skeleton-ldouble.c
index ed47e77963..cb58f1ab15 100644
--- a/stdio-common/tst-printf-format-skeleton-ldouble.c
+++ b/stdio-common/tst-printf-format-skeleton-ldouble.c
@@ -27,7 +27,7 @@
 #define PREC LDBL_MANT_DIG
 typedef long double type_t;
 static const type_t vals[] =
-  { -HUGE_VAL, -LDBL_MAX, -LDBL_MIN, copysign (0, -1), -NAN, NAN, 0, LDBL_MIN,
+  { -HUGE_VAL, -LDBL_MAX, -LDBL_MIN, -0.0, -NAN, NAN, 0, LDBL_MIN,
     LDBL_MAX, HUGE_VAL };
 static const char length[] = "L";