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44 lines
1.4 KiB
44 lines
1.4 KiB
diff -Nrup a/libiberty/aclocal.m4 b/libiberty/aclocal.m4 |
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--- a/libiberty/aclocal.m4 2019-01-19 09:01:34.000000000 -0700 |
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+++ b/libiberty/aclocal.m4 2020-01-09 22:00:27.183312982 -0700 |
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@@ -147,7 +147,7 @@ if test $ac_cv_os_cray = yes; then |
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fi |
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AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction, |
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-[AC_TRY_RUN([find_stack_direction () |
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+[AC_TRY_RUN([__attribute__ ((noclone,noinline)) find_stack_direction () |
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{ |
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static char *addr = 0; |
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auto char dummy; |
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diff --git a/config/intdiv0.m4 b/config/intdiv0.m4 |
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index 55dddcf1..ba906efc 100644 |
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--- a/config/intdiv0.m4 |
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+++ b/config/intdiv0.m4 |
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@@ -31,10 +31,10 @@ sigfpe_handler (sig) int sig; |
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exit (sig != SIGFPE); |
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} |
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-int x = 1; |
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-int y = 0; |
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-int z; |
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-int nan; |
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+volatile int x = 1; |
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+volatile int y = 0; |
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+volatile int z; |
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+volatile int nan; |
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int main () |
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{ |
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diff --git a/libiberty/configure.ac b/libiberty/configure.ac |
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index f1ce7601..fc20d228 100644 |
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--- a/libiberty/configure.ac |
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+++ b/libiberty/configure.ac |
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@@ -661,7 +661,7 @@ if test -z "${setobjs}"; then |
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for v in $vars; do |
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AC_MSG_CHECKING([for $v]) |
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AC_CACHE_VAL(libiberty_cv_var_$v, |
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- [AC_LINK_IFELSE([AC_LANG_PROGRAM([[int *p;]],[[extern int $v []; p = $v;]])], |
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+ [AC_LINK_IFELSE([AC_LANG_PROGRAM([[__attribute__ ((used)) int *p;]],[[extern int $v []; p = $v;]])], |
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[eval "libiberty_cv_var_$v=yes"], |
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[eval "libiberty_cv_var_$v=no"])]) |
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if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
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