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| author | Jonathan Wakely <jwakely@redhat.com> | 2023-05-12 12:17:08 +0100 |
|---|---|---|
| committer | Jonathan Wakely <jwakely@redhat.com> | 2023-05-12 17:47:17 +0100 |
| commit | 6190a74ebee69415b501996821c92f60d892fb81 (patch) | |
| tree | fd06fb3f2d1b7ef1fee107db0cb1766b15be2b69 | |
| parent | 1f973c295b699011acd7d5fcb04bd2bf887da16d (diff) | |
| download | gcc-6190a74ebee69415b501996821c92f60d892fb81.zip gcc-6190a74ebee69415b501996821c92f60d892fb81.tar.gz gcc-6190a74ebee69415b501996821c92f60d892fb81.tar.bz2 | |
libstdc++: Fix -Wnonnull warnings during configure
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Also fix an outdated comment about the default -std mode.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.
| -rw-r--r-- | libstdc++-v3/acinclude.m4 | 8 | ||||
| -rwxr-xr-x | libstdc++-v3/configure | 8 |
2 files changed, 8 insertions, 8 deletions
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4 index 89e7f5f..42a8e7a 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 99f4927..d4286b6 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); |