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enable emergency_malloc on all architectures with mmap 

It is actually needed for libgcc backtracer from time to time. And
we've seen libunwind to need it too. Plus we've not heard of any
problems with it. So lets just always enable it.

This should fix github issue #1248.
This commit is contained in:
Aliaksey Kandratsenka 2021-02-14 22:28:34 -08:00
parent 37087ec536
commit 4cf7dd0a75
1 changed files with 3 additions and 6 deletions
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9
configure.ac
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@ -244,8 +244,9 @@ fi
# aren't using autoconf. So we keep HAVE_MMAP define, but only to
# distingush windows and rest.
case "$host" in
*-mingw*) ;;
*) AC_DEFINE(HAVE_MMAP, 1, [Define to 1 if you have a working `mmap' system call.])
*-mingw*) default_emergency_malloc=no;;
*) default_emergency_malloc=yes
AC_DEFINE(HAVE_MMAP, 1, [Define to 1 if you have a working `mmap' system call.])
esac
# If AtomicWord != Atomic32, we need to define two versions of all the
@ -423,10 +424,6 @@ AC_CACHE_CHECK([if target has _Unwind_Backtrace],
AS_IF([test "x$perftools_cv_have_unwind_backtrace" = xyes],
[AC_DEFINE(HAVE_UNWIND_BACKTRACE, 1, [Whether <unwind.h> contains _Unwind_Backtrace])])
AS_IF([test "x$enable_backtrace" = xyes],
[default_emergency_malloc=yes],
[default_emergency_malloc=no])
AS_IF([test "x$will_use_libunwind" = xyes],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [return __arm__])],
[default_emergency_malloc=yes])])