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| author | Björn Gustavsson <bjorn@erlang.org> | 2020-09-24 08:15:13 +0200 |
|---|---|---|
| committer | Björn Gustavsson <bjorn@erlang.org> | 2021-02-18 12:04:00 +0100 |
| commit | 2c37b50ce36dba22ab96110074a33c9037402a14 (patch) | |
| tree | d9a8efcb9b2162432ad9d41224f0c552f73acf2e | |
| parent | 775806a5363ad496ca573f4baa797628d15d7e2f (diff) | |
| download | erlang-2c37b50ce36dba22ab96110074a33c9037402a14.tar.gz | |
Undo perform degradation on macOS
Apple Clang 12 included in Xcode 12 reports an error when a
function without a declaration is used. That change causes
the configure test for jump table support to wrongly assume
that jump table support is missing, and therefore a `switch`
would be used, degrading the performance of BEAM.
| -rw-r--r-- | erts/aclocal.m4 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/erts/aclocal.m4 b/erts/aclocal.m4 index 3d227e462c..d73bf3ccc2 100644 --- a/erts/aclocal.m4 +++ b/erts/aclocal.m4 @@ -221,6 +221,7 @@ AC_TRY_COMPILE([],[ #endif __label__ lbl1; __label__ lbl2; + extern int magic(void); int x = magic(); static void *jtab[2]; @@ -266,6 +267,7 @@ if test "$ac_cv_prog_emu_cc" != no; then #endif __label__ lbl1; __label__ lbl2; + extern int magic(void); int x = magic(); static void *jtab[2]; |