| diff --git a/bfd/mach-o.c b/bfd/mach-o.c | |
| index 29ebba4..e44cf6d 100644 | |
| --- a/bfd/mach-o.c | |
| +++ b/bfd/mach-o.c | |
| @@ -3666,6 +3666,48 @@ bfd_mach_o_read_encryption_info (bfd *abfd, bfd_mach_o_load_command *command) | |
| return TRUE; | |
| } | |
| +static bfd_boolean | |
| +bfd_mach_o_read_main (bfd *abfd, bfd_mach_o_load_command *command) |
| $ gdb/gdb /tmp/gdbtest/hello | |
| GNU gdb (GDB) 7.5.0.20121123-cvs | |
| Copyright (C) 2012 Free Software Foundation, Inc. | |
| License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> | |
| This is free software: you are free to change and redistribute it. | |
| There is NO WARRANTY, to the extent permitted by law. Type "show copying" | |
| and "show warranty" for details. | |
| This GDB was configured as "x86_64-apple-darwin12.2.0". | |
| For bug reporting instructions, please see: | |
| <http://www.gnu.org/software/gdb/bugs/>... |
| $ make check | |
| make check-recursive | |
| Making check in doc | |
| make[4]: Nothing to be done for `check'. | |
| Making check in po | |
| file=`echo ../../../bfd/po/da | sed 's,.*/,,'`.gmo \ | |
| && rm -f $file && PATH=../src:$PATH : -o $file ../../../bfd/po/da.po | |
| file=`echo ../../../bfd/po/es | sed 's,.*/,,'`.gmo \ | |
| && rm -f $file && PATH=../src:$PATH : -o $file ../../../bfd/po/es.po | |
| file=`echo ../../../bfd/po/fi | sed 's,.*/,,'`.gmo \ |
When I compile hello.c with: clang -g -O0 hello.c -o hello, and disassemble it in GDB, I get the contents of hello.s.
The line that confuses me is . It seems that when optimizations are off, clang saves unused return values on the stack. is saving the return value of printf even though hello.c doesn't do anything with it at all. I assume there's a reason for this. Why does it happen?
| ganymede:~/Development/ruby [trunk]$ brew link --verbose apple-gcc42 | |
| Linking /usr/local/Cellar/apple-gcc42/4.2.1-5666.3... ln -s ../Cellar/apple-gcc42/4.2.1-5666.3/bin/i686-apple-darwin11-gfortran-4.2.1 i686-apple-darwin11-gfortran-4.2.1 | |
| ln -s ../Cellar/apple-gcc42/4.2.1-5666.3/bin/i686-apple-darwin11-gcc-4.2.1 i686-apple-darwin11-gcc-4.2.1 | |
| ln -s ../Cellar/apple-gcc42/4.2.1-5666.3/bin/i686-apple-darwin11-g++-4.2.1 i686-apple-darwin11-g++-4.2.1 | |
| ln -s ../Cellar/apple-gcc42/4.2.1-5666.3/bin/i686-apple-darwin11-cpp-4.2.1 i686-apple-darwin11-cpp-4.2.1 | |
| ln -s ../Cellar/apple-gcc42/4.2.1-5666.3/bin/gfortran-4.2 gfortran-4.2 | |
| ln -s ../Cellar/apple-gcc42/4.2.1-5666.3/bin/gfortran gfortran | |
| ln -s ../Cellar/apple-gcc42/4.2.1-5666.3/bin/gcov-4.2 gcov-4.2 | |
| ln -s ../Cellar/apple-gcc42/4.2.1-5666.3/bin/gcc-4.2 gcc-4.2 | |
| ln -s ../Cellar/apple-gcc42/4.2.1-5666.3/bin/g++-4.2 g++-4.2 |
| class Polygon | |
| @@sides = nil | |
| def self.sides | |
| @@sides | |
| end | |
| def self.count | |
| @@count | |
| end |
| tell application "Terminal" | |
| activate | |
| tell application "System Events" to keystroke "n" using command down | |
| end tell |
| #!/bin/sh | |
| make clean | |
| make distclean | |
| rm -rf ./build | |
| set -e | |
| autoconf || exit 125 | |
| (./configure --prefix=`pwd`/build/ && make && make install) || exit 125 |
| def foo | |
| def bar | |
| end | |
| end | |
| foo | |
| p Object.instance_methods(false) | |
| p Object.private_instance_methods(false) |
| require 'hello' | |
| require 'goodbye' |