Document crashes on Irix due to a strange problem with `rld'.

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index 307e03ac87e9f1f56fd1a204e8ea494ba38a8431..57cd0e0375dc69c744f5a76bb118b871e8a14cfa 100644 (file)
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -1068,6 +1068,26 @@ Other systems allow to set LD_RUN_PATH in a similar way, but before
 Emacs is linked.  With LD_RUN_PATH set, the linker will include a
 specified run-time search path in the executable.
 
+On some systems, Emacs could crash due to problems with dynamic
+linking.  Specifically, on SGI Irix 6.5, crashes were reported with
+backtraces like this:
+
+  (dbx) where
+   0 strcmp(0xf49239d, 0x4031184, 0x40302b4, 0x12, 0xf0000000, 0xf4923aa, 0x0, 0x492ddb2) ["/xlv22/ficus-jan23/work/irix/lib/libc/libc_n32_M3_ns/strings/strcmp.s":35, 0xfb7e480]
+   1 general_find_symbol(0xf49239d, 0x0, 0x0, 0x0, 0xf0000000, 0xf4923aa, 0x0, 0x492ddb2)
+ ["/comp2/mtibuild/v73/workarea/v7.3/rld/rld.c":2140, 0xfb65a98]
+   2 resolve_symbol(0xf49239d, 0x4031184, 0x0, 0xfbdd438, 0x0, 0xf4923aa, 0x0, 0x492ddb2)
+ ["/comp2/mtibuild/v73/workarea/v7.3/rld/rld.c":1947, 0xfb657e4]
+   3 lazy_text_resolve(0xd18, 0x1a3, 0x40302b4, 0x12, 0xf0000000, 0xf4923aa, 0x0, 0x492ddb2)
+ ["/comp2/mtibuild/v73/workarea/v7.3/rld/rld.c":997, 0xfb64d44]
+   4 _rld_text_resolve(0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
+ ["/comp2/mtibuild/v73/workarea/v7.3/rld/rld_bridge.s":175, 0xfb6032c]
+
+(`rld' is the dynamic linker.)  We don't know yet why does this
+happen, but setting the environment variable LD_BIND_NOW to 1 (which
+forces the dynamic linker to bind all shared objects early on) seems
+to work around the problem.
+
 Please refer to the documentation of your dynamic linker for details.
 
 * On Solaris 2.7, building Emacs with WorkShop Compilers 5.0 98/12/15