diff options
| -rw-r--r-- | emacs/25.3/01_all_gc-align-sparc.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/emacs/25.3/01_all_gc-align-sparc.patch b/emacs/25.3/01_all_gc-align-sparc.patch new file mode 100644 index 0000000..b76cf99 --- /dev/null +++ b/emacs/25.3/01_all_gc-align-sparc.patch @@ -0,0 +1,31 @@ +Fix segmentation fault on sparc64 with 32 bit userland. +https://bugs.gentoo.org/647238 + +Backported from upstream git: + +commit db64a866f6971c5d63565253c0c8d8db15d4a4dc +Author: Paul Eggert <eggert@cs.ucla.edu> +Date: Tue Mar 20 09:54:20 2018 -0700 + + Port to 32-bit sparc64 + + Problem reported by Ulrich Mueller; fix suggested by Eli Zaretskii + and Andreas Schwab (Bug#30855). + * src/alloc.c (mark_memory): Call mark_maybe_object only on + pointers that are properly aligned for Lisp_Object. + +--- emacs-25.3-orig/src/alloc.c ++++ emacs-25.3/src/alloc.c +@@ -4892,7 +4892,11 @@ + for (pp = start; (void *) pp < end; pp += GC_POINTER_ALIGNMENT) + { + mark_maybe_pointer (*(void **) pp); +- mark_maybe_object (*(Lisp_Object *) pp); ++ ++ verify (alignof (Lisp_Object) % GC_POINTER_ALIGNMENT == 0); ++ if (alignof (Lisp_Object) == GC_POINTER_ALIGNMENT ++ || (uintptr_t) pp % alignof (Lisp_Object) == 0) ++ mark_maybe_object (*(Lisp_Object *) pp); + } + } + |