diff options
| author | Bruno Haible <bruno@clisp.org> | 2019-08-18 16:12:29 +0200 |
|---|---|---|
| committer | Bruno Haible <bruno@clisp.org> | 2019-08-18 16:12:29 +0200 |
| commit | bdf8b1d2b74e12648edafffcda43832bc35e3d1f (patch) | |
| tree | 0b58351a42501e33df1c1dee817fdc60dd6cddc9 /m4/exp2.m4 | |
| parent | b3cde21d1fb6391686e4fa68506131fb65ca256f (diff) | |
| download | gnulib-bdf8b1d2b74e12648edafffcda43832bc35e3d1f.tar.gz | |
Defeat -flto GCC optimization in math autoconf tests.
Reported by Tomasz Kłoczko <kloczko.tomasz@gmail.com>
at <https://savannah.gnu.org/bugs/?56109>.
* m4/mathfunc.m4 (gl_MATHFUNC): Mark function pointer as 'volatile'.
* m4/acosl.m4 (gl_FUNC_ACOSL): Likewise.
* m4/asinl.m4 (gl_FUNC_ASINL): Likewise.
* m4/atanl.m4 (gl_FUNC_ATANL): Likewise.
* m4/cosl.m4 (gl_FUNC_COSL): Likewise.
* m4/exp2.m4 (gl_FUNC_EXP2): Likewise.
* m4/expl.m4 (gl_FUNC_EXPL): Likewise.
* m4/expm1.m4 (gl_FUNC_EXPM1): Likewise.
* m4/expm1l.m4 (gl_FUNC_EXPM1L): Likewise.
* m4/sinl.m4 (gl_FUNC_SINL): Likewise.
* m4/sqrtl.m4 (gl_FUNC_SQRTL): Likewise.
* m4/tanl.m4 (gl_FUNC_TANL): Likewise.
Diffstat (limited to 'm4/exp2.m4')
| -rw-r--r-- | m4/exp2.m4 | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/m4/exp2.m4 b/m4/exp2.m4 index c5c58bd50b..b6cf666f49 100644 --- a/m4/exp2.m4 +++ b/m4/exp2.m4 @@ -1,4 +1,4 @@ -# exp2.m4 serial 2 +# exp2.m4 serial 3 dnl Copyright (C) 2010-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -26,7 +26,7 @@ AC_DEFUN([gl_FUNC_EXP2], "C" #endif double exp2 (double); - double (*funcptr) (double) = exp2; + double (* volatile funcptr) (double) = exp2; double x;]], [[return funcptr (x) > 1.5 || exp2 (x) > 1.5;]])], @@ -50,7 +50,7 @@ AC_DEFUN([gl_FUNC_EXP2], "C" #endif double exp2 (double); - double (*funcptr) (double) = exp2; + double (* volatile funcptr) (double) = exp2; double x;]], [[return funcptr (x) > 1.5 || exp2 (x) > 1.5;]])], |