commit 68ed4878ca97902c8b909d88dd855d71e6647376 Author: Nick Mathewson nickm@torproject.org Date: Mon Feb 24 11:41:53 2014 -0500

pass our compiler -fasynchronous-unwind-tables by default

This should make more platforms (in particular, ones with compilers where -fomit-frame-pointer is on by default but table generation isn't) support backtrace generation. Thanks to cypherpunks for this one.

Fixes bug 11047; bugfix on 0.2.5.2-alpha. --- changes/bug11047 | 9 +++++++++ configure.ac | 7 +++++++ 2 files changed, 16 insertions(+)

diff --git a/changes/bug11047 b/changes/bug11047 new file mode 100644 index 0000000..25acd8e --- /dev/null +++ b/changes/bug11047 @@ -0,0 +1,9 @@ + o Minor bugfixes: + + - Build using the -fasynchronous-unwind-tables option so that more + platforms (in particular, ones like 32-bit Intel where the + -fomit-frame-pointer option is on by default and table + generation is not) will support generating backtraces. This + doesn't yet add Windows support yet; only Linux, OSX, and some BSD + are affected. Reported by 'cypherpunks'; fixes bug 11047; bugfix + on 0.2.5.2-alpha. diff --git a/configure.ac b/configure.ac index 871ca56..187fadc 100644 --- a/configure.ac +++ b/configure.ac @@ -649,6 +649,13 @@ CFLAGS="$saved_CFLAGS" AC_SUBST(F_OMIT_FRAME_POINTER)

dnl ------------------------------------------------------ +dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it +dnl for us, as GCC 4.6 and later do at many optimization levels), then +dnl we should try to add -fasynchronous-unwind-tables so that our backtrace +dnl code will work. +TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables) + +dnl ------------------------------------------------------ dnl Where do you live, libnatpmp? And how do we call you? dnl There are no packages for Debian or Redhat as of this patch