diff options
Diffstat (limited to 'gnu/packages/patches/jamvm-2.0.0-disable-branch-patching.patch')
| -rw-r--r-- | gnu/packages/patches/jamvm-2.0.0-disable-branch-patching.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/gnu/packages/patches/jamvm-2.0.0-disable-branch-patching.patch b/gnu/packages/patches/jamvm-2.0.0-disable-branch-patching.patch new file mode 100644 index 0000000000..1352ed7803 --- /dev/null +++ b/gnu/packages/patches/jamvm-2.0.0-disable-branch-patching.patch @@ -0,0 +1,31 @@ +From d80cfc83325f8e95d35ecd9f15b36b96fa9ed3ee Mon Sep 17 00:00:00 2001 +From: Simon South <simon@simonsouth.net> +Date: Sat, 6 Jun 2020 18:56:56 -0400 +Subject: [PATCH] Disable branch-patching + +This patch disables JamVM's branch-patching optimization, which tends +to make JamVM fail with an "Illegal instruction" error on x86_64 (and +possibly other architectures that use variable-length instructions) +when built using modern versions of gcc and glibc. +--- + src/init.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/src/init.c b/src/init.c +index 32539cf..38ad54b 100644 +--- a/src/init.c ++++ b/src/init.c +@@ -72,8 +72,8 @@ void setDefaultInitArgs(InitArgs *args) { + #ifdef INLINING + args->replication_threshold = 10; + args->profile_threshold = 10; +- args->branch_patching_dup = TRUE; +- args->branch_patching = TRUE; ++ args->branch_patching_dup = FALSE; ++ args->branch_patching = FALSE; + args->print_codestats = FALSE; + args->join_blocks = TRUE; + args->profiling = TRUE; +-- +2.25.2 + |