Mercurial > gnulib
changeset 39912:062361de7628
floor, ceil, trunc, truncf, truncl: Defeat GCC optimizations.
* m4/floor.m4 (gl_FUNC_FLOOR_LIBS): Use 'floor' also through a function
pointer.
* m4/ceil.m4 (gl_FUNC_CEIL_LIBS): Use 'ceil' also through a function
pointer.
* m4/trunc.m4 (gl_FUNC_TRUNC): Use 'trunc' also through a function
pointer.
* m4/truncf.m4 (gl_FUNC_TRUNCF): Use 'truncf' also through a function
pointer.
* m4/truncl.m4 (gl_FUNC_TRUNCL): Use 'truncl' also through a function
pointer.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 14 Oct 2018 09:27:21 +0200 |
parents | 5f0ef98dc2ce |
children | 73d60b1f9c96 |
files | ChangeLog m4/ceil.m4 m4/floor.m4 m4/trunc.m4 m4/truncf.m4 m4/truncl.m4 |
diffstat | 6 files changed, 39 insertions(+), 15 deletions(-) [+] |
line wrap: on
line diff
--- a/ChangeLog Sat Oct 13 07:16:00 2018 +0200 +++ b/ChangeLog Sun Oct 14 09:27:21 2018 +0200 @@ -1,3 +1,17 @@ +2018-10-14 Bruno Haible <bruno@clisp.org> + + floor, ceil, trunc, truncf, truncl: Defeat GCC optimizations. + * m4/floor.m4 (gl_FUNC_FLOOR_LIBS): Use 'floor' also through a function + pointer. + * m4/ceil.m4 (gl_FUNC_CEIL_LIBS): Use 'ceil' also through a function + pointer. + * m4/trunc.m4 (gl_FUNC_TRUNC): Use 'trunc' also through a function + pointer. + * m4/truncf.m4 (gl_FUNC_TRUNCF): Use 'truncf' also through a function + pointer. + * m4/truncl.m4 (gl_FUNC_TRUNCL): Use 'truncl' also through a function + pointer. + 2018-10-13 Akim Demaille <akim@lrde.epita.fr> bootstrap: fix wget command for po files.
--- a/m4/ceil.m4 Sat Oct 13 07:16:00 2018 +0200 +++ b/m4/ceil.m4 Sun Oct 14 09:27:21 2018 +0200 @@ -1,4 +1,4 @@ -# ceil.m4 serial 11 +# ceil.m4 serial 12 dnl Copyright (C) 2007, 2009-2018 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -81,8 +81,9 @@ # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> + double (*funcptr) (double) = ceil; double x;]], - [[x = ceil(x);]])], + [[x = funcptr(x) + ceil(x);]])], [gl_cv_func_ceil_libm=]) if test "$gl_cv_func_ceil_libm" = "?"; then save_LIBS="$LIBS" @@ -93,8 +94,9 @@ # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> + double (*funcptr) (double) = ceil; double x;]], - [[x = ceil(x);]])], + [[x = funcptr(x) + ceil(x);]])], [gl_cv_func_ceil_libm="-lm"]) LIBS="$save_LIBS" fi
--- a/m4/floor.m4 Sat Oct 13 07:16:00 2018 +0200 +++ b/m4/floor.m4 Sun Oct 14 09:27:21 2018 +0200 @@ -1,4 +1,4 @@ -# floor.m4 serial 10 +# floor.m4 serial 11 dnl Copyright (C) 2007, 2009-2018 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -77,8 +77,9 @@ # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> + double (*funcptr) (double) = floor; double x;]], - [[x = floor(x);]])], + [[x = funcptr(x) + floor(x);]])], [gl_cv_func_floor_libm=]) if test "$gl_cv_func_floor_libm" = "?"; then save_LIBS="$LIBS" @@ -89,8 +90,9 @@ # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> + double (*funcptr) (double) = floor; double x;]], - [[x = floor(x);]])], + [[x = funcptr(x) + floor(x);]])], [gl_cv_func_floor_libm="-lm"]) LIBS="$save_LIBS" fi
--- a/m4/trunc.m4 Sat Oct 13 07:16:00 2018 +0200 +++ b/m4/trunc.m4 Sun Oct 14 09:27:21 2018 +0200 @@ -1,4 +1,4 @@ -# trunc.m4 serial 11 +# trunc.m4 serial 12 dnl Copyright (C) 2007, 2010-2018 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -21,8 +21,9 @@ # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> + double (*funcptr) (double) = trunc; double x;]], - [[x = trunc(x);]])], + [[x = funcptr(x) + trunc(x);]])], [TRUNC_LIBM=]) if test "$TRUNC_LIBM" = "?"; then save_LIBS="$LIBS" @@ -33,8 +34,9 @@ # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> + double (*funcptr) (double) = trunc; double x;]], - [[x = trunc(x);]])], + [[x = funcptr(x) + trunc(x);]])], [TRUNC_LIBM="-lm"]) LIBS="$save_LIBS" fi
--- a/m4/truncf.m4 Sat Oct 13 07:16:00 2018 +0200 +++ b/m4/truncf.m4 Sun Oct 14 09:27:21 2018 +0200 @@ -1,4 +1,4 @@ -# truncf.m4 serial 11 +# truncf.m4 serial 12 dnl Copyright (C) 2007, 2010-2018 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -21,8 +21,9 @@ # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> + float (*funcptr) (float) = truncf; float x;]], - [[x = truncf(x);]])], + [[x = funcptr(x) + truncf(x);]])], [TRUNCF_LIBM=]) if test "$TRUNCF_LIBM" = "?"; then save_LIBS="$LIBS" @@ -33,8 +34,9 @@ # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> + float (*funcptr) (float) = truncf; float x;]], - [[x = truncf(x);]])], + [[x = funcptr(x) + truncf(x);]])], [TRUNCF_LIBM="-lm"]) LIBS="$save_LIBS" fi
--- a/m4/truncl.m4 Sat Oct 13 07:16:00 2018 +0200 +++ b/m4/truncl.m4 Sun Oct 14 09:27:21 2018 +0200 @@ -1,4 +1,4 @@ -# truncl.m4 serial 13 +# truncl.m4 serial 14 dnl Copyright (C) 2007-2008, 2010-2018 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -25,8 +25,9 @@ # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> + long double (*funcptr) (long double) = truncl; long double x;]], - [[x = truncl(x);]])], + [[x = funcptr(x) + truncl(x);]])], [TRUNCL_LIBM=]) if test "$TRUNCL_LIBM" = "?"; then save_LIBS="$LIBS" @@ -37,8 +38,9 @@ # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> + long double (*funcptr) (long double) = truncl; long double x;]], - [[x = truncl(x);]])], + [[x = funcptr(x) + truncl(x);]])], [TRUNCL_LIBM="-lm"]) LIBS="$save_LIBS" fi