Tested powerpc64le-linux. Pushed to trunk.
-- >8 --
We should not test for nan by passing it a null pointer, as this can
trigger -Wnonnull warnings.
Also fix an outdated comment about the default -std mode.
libstdc++-v3/ChangeLog:
* acinclude.m4 (GLIBCXX_CHECK_C99_TR1): Use a non-null pointer
to check for nan, nanf, and nanl.
* configure: Regenerate.
---
libstdc++-v3/acinclude.m4 | 8 ++++----
libstdc++-v3/configure | 8 ++++----
2 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index 89e7f5f5f45..42a8e7a775e 100644
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -1620,7 +1620,7 @@ AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
- # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__
+ # Use -std=c++98 because -std=gnu++98 leaves __STRICT_ANSI__
# undefined and fake C99 facilities may be spuriously enabled.
ac_save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -std=c++98"
@@ -1885,9 +1885,9 @@ AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [
lround(0.0);
lroundf(0.0f);
lroundl(0.0l);
- nan(0);
- nanf(0);
- nanl(0);
+ nan("");
+ nanf("");
+ nanl("");
nearbyint(0.0);
nearbyintf(0.0f);
nearbyintl(0.0l);
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 99f4927aa8c..d4286b67a73 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -19731,7 +19731,7 @@ ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS
$LDFLAGS conftest.$ac_ex
ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
- # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__
+ # Use -std=c++98 because -std=gnu++98 leaves __STRICT_ANSI__
# undefined and fake C99 facilities may be spuriously enabled.
ac_save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -std=c++98"
@@ -20106,9 +20106,9 @@ typedef double_t my_double_t;
lround(0.0);
lroundf(0.0f);
lroundl(0.0l);
- nan(0);
- nanf(0);
- nanl(0);
+ nan("");
+ nanf("");
+ nanl("");
nearbyint(0.0);
nearbyintf(0.0f);
nearbyintl(0.0l);
--
2.40.1
