diff options
-rw-r--r-- | yjit.c | 5 |
1 files changed, 5 insertions, 0 deletions
@@ -74,6 +74,11 @@ rb_yjit_mark_writable(void *mem_block, uint32_t mem_size) void rb_yjit_mark_executable(void *mem_block, uint32_t mem_size) { + // Do not call mprotect when mem_size is zero. Some platforms may return + // an error for it. https://github.com/Shopify/ruby/issues/450 + if (mem_size == 0) { + return; + } if (mprotect(mem_block, mem_size, PROT_READ | PROT_EXEC)) { rb_bug("Couldn't make JIT page (%p, %lu bytes) executable, errno: %s\n", mem_block, (unsigned long)mem_size, strerror(errno)); |