OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

re PR go/64595 (go programs abort when debug info is stripped) 

PR go/64595
	* go-lang.c (go_langhook_init_options_struct): Set default
	debug_info_level.
	(go_langhook_post_options): If debug_info_level is still the
	default, make sure write_symbols is set.
	* gccgo.texi (Invoking gccgo): Document that -g1 is the default.

From-SVN: r220064
This commit is contained in:
Ian Lance Taylor 2015-01-23 22:26:41 +00:00 committed by Ian Lance Taylor
parent af955a5298
commit 818424b256
3 changed files with 33 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
gcc/go/ChangeLog
View File

@ -1,3 +1,12 @@
2015-01-23 Ian Lance Taylor <iant@google.com>
PR go/64595
* go-lang.c (go_langhook_init_options_struct): Set default
debug_info_level.
(go_langhook_post_options): If debug_info_level is still the
default, make sure write_symbols is set.
* gccgo.texi (Invoking gccgo): Document that -g1 is the default.
2015-01-16 Richard Henderson <rth@redhat.com>
* go-gcc.cc (Gcc_backend::call_expression): Add chain_expr argument.

12
gcc/go/gccgo.texi
View File

@ -223,6 +223,18 @@ may be used. Or the checks may be removed via
@option{-fno-go-check-divide-overflow}. This option is currently on
by default, but in the future may be off by default on systems that do
not require it.
@item -g
@cindex @option{-g for gccgo}
This is the standard @command{gcc} option (@pxref{Debugging Options, ,
Debugging Options, gcc, Using the GNU Compiler Collection (GCC)}). It
is mentioned here because by default @command{gccgo} turns on
debugging information generation with the equivalent of the standard
option @option{-g1}. This is because Go programs require debugging
information to be available in order to get backtrace information. An
explicit @option{-g0} may be used to disable the generation of
debugging information, in which case certain standard library
functions, such as @code{runtime.Callers}, will not operate correctly.
@end table
@c man end

12
gcc/go/go-lang.c
View File

@ -171,6 +171,12 @@ go_langhook_init_options_struct (struct gcc_options *opts)
/* Exceptions are used to handle recovering from panics. */
opts->x_flag_exceptions = 1;
opts->x_flag_non_call_exceptions = 1;
/* Go programs expect runtime.Callers to work, and that uses
libbacktrace that uses debug info. Set the debug info level to 1
by default. In post_options we will set the debug type if the
debug info level was not set back to 0 on the command line. */
opts->x_debug_info_level = DINFO_LEVEL_TERSE;
}
/* Infrastructure for a vector of char * pointers. */
@ -289,6 +295,12 @@ go_langhook_post_options (const char **pfilename ATTRIBUTE_UNUSED)
if (!global_options_set.x_flag_optimize_sibling_calls)
global_options.x_flag_optimize_sibling_calls = 0;
/* If the debug info level is still 1, as set in init_options, make
sure that some debugging type is selected. */
if (global_options.x_debug_info_level == DINFO_LEVEL_TERSE
&& global_options.x_write_symbols == NO_DEBUG)
global_options.x_write_symbols = PREFERRED_DEBUGGING_TYPE;
/* Returning false means that the backend should be used. */
return false;
}