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From: | Gergely Czuczy |
Subject: | bug#28308: Build failure on FreeBSD/aarch64 |
Date: | Mon, 11 Sep 2017 09:26:20 +0200 |
User-agent: | Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 |
On 2017. 09. 11. 8:07, npostavs@users.sourceforge.net wrote:
I've rebuilt it with CFLAGS="-O0 -g", but it seems to be the same in this regards: root@build-pine64:/usr/ports/editors/emacs-devel# cd /usr/ports/editors/emacs-devel/work/emacs-f44184f/lisp root@build-pine64:/usr/ports/editors/emacs-devel/work/emacs-f44184f/lisp# EMACSLOADPATH= lldb -- '../src/bootstrap-emacs' -batch --no-site-file --no-site-lisp --eval '(setq load-prefer-newer t)' -f batch-byte-compile emacs-lisp/macroexp.elEli Zaretskii <eliz@gnu.org> writes:From: Gergely Czuczy <gergely.czuczy@harmless.hu> Date: Sat, 9 Sep 2017 07:01:20 +0200 Cc: 28308@debbugs.gnu.org * thread #1, name = 'bootstrap-emacs', stop reason = signal SIGSEGV: invalid address (fault address: 0x41aef578) * frame #0: 0x0000000000228460 bootstrap-emacs`xnrealloc(pa=0x0000000000000000, nitems=0, item_size=1101985151) at alloc.c:939 frame #1: 0x0000000000228204 bootstrap-emacs`xnrealloc(pa=0x000000000019ae38, nitems=42949672960, item_size=281474976703896) at alloc.c:939 frame #2: 0x000000000022e208 bootstrap-emacs`xpalloc(pa=0x0000000000000000, nitems=0x0000000041aef57f, nitems_incr_min=1683000, nitems_max=42949672960, item_size=281474976703896) at alloc.c:0 frame #3: 0x0000000000168214 bootstrap-emacs`delete_tty(terminal=0xbc7603df25a071f3) at term.c:4463 frame #4: 0x0000000000040190 bootstrap-emacs`__start + 376 frame #5: 0x0000000040390018 ld-elf.so.1`.rtld_start at rtld_start.S:41 (lldb)I don't understand how come xpalloc got called in this context. delete_tty on line 4463 of term,c calls delete_terminal, which only calls xfree. It doesn't allocate any memory (of course), let alone with semi-bogus arguments as shown in this backtrace.Frame #2 "at alloc.c:0" seems a bit fishy too. Stack corruption? Or is it possible optimizations are interfering with the debug info? Gergely, could you try rebuiding with -O0 in addition to -g?
(lldb) target create "../src/bootstrap-emacs" Current executable set to '../src/bootstrap-emacs' (aarch64).(lldb) settings set -- target.run-args "-batch" "--no-site-file" "--no-site-lisp" "--eval" "(setq load-prefer-newer t)" "-f" "batch-byte-compile" "emacs-lisp/macroexp.el"
(lldb) r Process 88583 launching Process 88583 launched: '../src/bootstrap-emacs' (aarch64) Process 88583 stopped* thread #1, name = 'bootstrap-emacs', stop reason = signal SIGSEGV: invalid address (fault address: 0x41b17978) frame #0: 0x0000000000228460 bootstrap-emacs`xnrealloc(pa=0x0000000000000000, nitems=0, item_size=1102150015) at alloc.c:939
936 { 937 eassert (0 <= nitems && 0 < item_size); 938 ptrdiff_t nbytes;-> 939 if (INT_MULTIPLY_WRAPV (nitems, item_size, &nbytes) || SIZE_MAX < nbytes)
940 memory_full (SIZE_MAX); 941 return xrealloc (pa, nbytes); 942 } (lldb) bt* thread #1, name = 'bootstrap-emacs', stop reason = signal SIGSEGV: invalid address (fault address: 0x41b17978) * frame #0: 0x0000000000228460 bootstrap-emacs`xnrealloc(pa=0x0000000000000000, nitems=0, item_size=1102150015) at alloc.c:939 frame #1: 0x0000000000228204 bootstrap-emacs`xnrealloc(pa=0x000000000019ae38, nitems=42949672960, item_size=281474976703896) at alloc.c:939 frame #2: 0x000000000022e208 bootstrap-emacs`xpalloc(pa=0x0000000000000000, nitems=0x0000000041b1797f, nitems_incr_min=1683000, nitems_max=42949672960, item_size=281474976703896) at alloc.c:0 frame #3: 0x0000000000168214 bootstrap-emacs`delete_tty(terminal=0x3276551740f23ac5) at term.c:4463
frame #4: 0x0000000000040190 bootstrap-emacs`__start + 376 frame #5: 0x0000000040390018 ld-elf.so.1`.rtld_start at rtld_start.S:41 (lldb)
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