On Linux/Mac, I got a segmentation fault:
(gdb) bt
#0 0x00000000007519af in glue_take584 ()
#1 0x00000000006d4bec in
back::rpath::get_rpath_flags::_3899df2ca513c603 ()
#2 0x00000000006c7655 in back:🔗:link_binary::_7afde00a9791031c ()
#3 0x00000000007d3ff5 in driver::rustc::compile_input::thunk9212 ()
#4 0x0000000000710f24 in driver::rustc::time::_3e691b2a4ba58aee ()
#5 0x000000000071a79d in
driver::rustc::compile_input::_7b4a41b87c18e034 ()
#6 0x000000000072f0a9 in driver::rustc::main::_cd8b8c8185af3dee ()
#7 0x000000000072f1ed in _rust_main ()
#8 0x00007ffff7e6e146 in task_start_wrapper (a=<optimized out>) at
../src/rt/rust_task.cpp:176
The variable `output` or `out_filename` becomes (null) after the definition
of `fn unlib`. Move the function defintion to the beginning seems
prevent the crash on Linux.
When unwinding through __morestack the stack limit in the TLS is invalidated
and must be reset. Instead of actually landing at __morestack we're
just going to make all our Rust landing pads call upcall_reset_stack_limit,
which will find the stack segment that corresponds to the current stack
pointer and put the limit in the TLS.
Also massively expand the stack segment red zone to make more room for the
dynamic linker. Will fix in the future.
rustc generates output files in LLVM bitcode format if "--emit-llvm"
option is given. When used with the "-S" option, rustc generates LLVM
intermediate language assembly files.
Fixes Issue #476
Building Rust(version 280bc56) on Ubuntu 11.10 failed with link error,
like:
compile_and_link: stage0/lib/rustc/i686-unknown-linux-gnu/lib/libstd.so
compile_and_link: stage0/lib/rustc/i686-unknown-linux-gnu/bin/rustc
/local/src/rust/build/stage0/lib/rustc/i686-unknown-linux-gnu/lib/librustrt.so:
undefined reference to `clock_gettime'
collect2: ld returned 1 exit status
error: linking with gcc failed with code 1
GCC toolchain released by Ubuntu 11.10 introduced a few compiler flags
that are different with upstream GCC[1]. Flags "-Wl,--as-needed' and
'-Wl,--no-copy-dt-needed-entries' are passed by default.
Function clock_gettime from librt is used by librustrt, indirectly by
rustc. It is necessary to explicitly pass the "-lrt" flags when building
rustc.
Please note since the toolchain changes will be the default in the next
release(2.22) of binutils, this is not actually a Debian/Ubuntu specific
issue.
1. https://wiki.ubuntu.com/OneiricOcelot/ReleaseNotes#GCC_4.6_Toolchain
Signed-off-by: Haitao Li <lihaitao@gmail.com>
