I found that if bjam was compiled with -fno-strict-aliasing, it didn't
segfault anymore. It seems the hash table code is what's violating the
strict aliasing rules.
I've attached a patch to turn on -fno-strict-aliasing, for the main compile as
well since even under g++-4.1 some of the libraries (like boost-python)
tripped those warnings as well. I also fixed a few implicit declaration
warnings and so on that might have caused trouble on 64-bit systems.
I'll hold off on adding the "patch" tag until I've tested that the entire
build works OK.
--
Daniel Schepler
diff -urN boost-1.34.0.old/tools/build/v2/tools/gcc.jam boost-1.34.0/tools/build/v2/tools/gcc.jam
--- boost-1.34.0.old/tools/build/v2/tools/gcc.jam 2007-05-03 02:09:04.000000000 -0400
+++ boost-1.34.0/tools/build/v2/tools/gcc.jam 2007-06-29 18:28:05.000000000 -0400
@@ -268,8 +268,8 @@
# Declare flags and action for compilation
flags gcc.compile OPTIONS <optimization>off : -O0 ;
-flags gcc.compile OPTIONS <optimization>speed : -O3 ;
-flags gcc.compile OPTIONS <optimization>space : -Os ;
+flags gcc.compile OPTIONS <optimization>speed : -O3 -fno-strict-aliasing ;
+flags gcc.compile OPTIONS <optimization>space : -Os -fno-strict-aliasing ;
flags gcc.compile OPTIONS <inlining>off : -fno-inline ;
flags gcc.compile OPTIONS <inlining>on : -Wno-inline ;
diff -urN boost-1.34.0.old/tools/jam/src/build.jam boost-1.34.0/tools/jam/src/build.jam
--- boost-1.34.0.old/tools/jam/src/build.jam 2006-07-23 12:24:21.000000000 -0400
+++ boost-1.34.0/tools/jam/src/build.jam 2007-06-29 18:23:58.000000000 -0400
@@ -153,7 +153,7 @@
## GCC 2.x, 3.x, 4.x
toolset gcc gcc : "-o " : -D
: -pedantic
- [ opt --release : [ opt --symbols : -g : -s ] -O3 ]
+ [ opt --release : [ opt --symbols : -g : -s ] -O3 -fno-strict-aliasing ]
[ opt --debug : -g -O0 -fno-inline ]
-I$(--python-include) -Wno-long-long
: -L$(--python-lib[1]) -l$(--python-lib[2]) ;
diff -urN boost-1.34.0.old/tools/jam/src/builtins.c boost-1.34.0/tools/jam/src/builtins.c
--- boost-1.34.0.old/tools/jam/src/builtins.c 2006-08-28 15:33:41.000000000 -0400
+++ boost-1.34.0/tools/jam/src/builtins.c 2007-06-29 18:12:45.000000000 -0400
@@ -24,6 +24,7 @@
# include "compile.h"
# include "native.h"
# include "variable.h"
+# include "timestamp.h"
# include <ctype.h>
/*
@@ -63,6 +64,13 @@
void backtrace_line( FRAME *frame );
void print_source_line( PARSE* p );
+void init_set();
+void init_path();
+void init_regex();
+void init_property_set();
+void init_sequence();
+void init_order();
+
RULE* bind_builtin( char* name, LIST*(*f)(PARSE*, FRAME*), int flags, char** args )
{
argument_list* arg_list = 0;
diff -urN boost-1.34.0.old/tools/jam/src/debug.c boost-1.34.0/tools/jam/src/debug.c
--- boost-1.34.0.old/tools/jam/src/debug.c 2005-10-02 20:47:36.000000000 -0400
+++ boost-1.34.0/tools/jam/src/debug.c 2007-06-29 18:09:39.000000000 -0400
@@ -107,8 +107,8 @@
profile_total.memory += p->memory;
}
printf("%10d %10d %10d %12.6f %10d %10d %s\n",
- p->num_entries, p->cumulative, p->net, q,
- p->memory, mem_each,
+ (int) p->num_entries, (int) p->cumulative, (int) p->net, q,
+ (int) p->memory, (int) mem_each,
p->name);
}
diff -urN boost-1.34.0.old/tools/jam/src/hcache.c boost-1.34.0/tools/jam/src/hcache.c
--- boost-1.34.0.old/tools/jam/src/hcache.c 2003-07-11 02:49:32.000000000 -0400
+++ boost-1.34.0/tools/jam/src/hcache.c 2007-06-29 18:14:43.000000000 -0400
@@ -162,7 +162,7 @@
{
if (!s)
s = "";
- fprintf(f, "%lu\t%s\n", strlen(s), s);
+ fprintf(f, "%lu\t%s\n", (unsigned long) strlen(s), s);
}
void
@@ -314,10 +314,10 @@
else if (c->age > maxage)
continue;
- sprintf(includes_count_str, "%lu", list_length(c->includes));
- sprintf(hdrscan_count_str, "%lu", list_length(c->hdrscan));
- sprintf(time_str, "%lu", c->time);
- sprintf(age_str, "%lu", c->age);
+ sprintf(includes_count_str, "%lu", (unsigned long) list_length(c->includes));
+ sprintf(hdrscan_count_str, "%lu", (unsigned long) list_length(c->hdrscan));
+ sprintf(time_str, "%lu", (unsigned long) c->time);
+ sprintf(age_str, "%lu", (unsigned long) c->age);
write_netstring(f, CACHE_RECORD_HEADER);
write_netstring(f, c->boundname);
diff -urN boost-1.34.0.old/tools/jam/src/make1.c boost-1.34.0/tools/jam/src/make1.c
--- boost-1.34.0.old/tools/jam/src/make1.c 2005-10-02 20:47:36.000000000 -0400
+++ boost-1.34.0/tools/jam/src/make1.c 2007-06-29 18:15:19.000000000 -0400
@@ -60,10 +60,12 @@
# include "make.h"
# include "command.h"
# include "execcmd.h"
+# include "debug.h"
+# include "compile.h"
# include <stdlib.h>
-#if defined(sun) || defined(__sun)
+#if defined(sun) || defined(__sun) || defined(unix) || defined(__unix)
#include <unistd.h> /* for unlink */
#endif
diff -urN boost-1.34.0.old/tools/jam/src/native.c boost-1.34.0/tools/jam/src/native.c
--- boost-1.34.0.old/tools/jam/src/native.c 2005-09-28 10:09:58.000000000 -0400
+++ boost-1.34.0/tools/jam/src/native.c 2007-06-29 18:13:14.000000000 -0400
@@ -8,6 +8,7 @@
# define P0 (PARSE *)0
# define C0 (char *)0
+void lol_build( LOL* lol, char** elements );
void declare_native_rule(char* module, char* rule, char** args,
LIST*(*f)(PARSE*, FRAME*), int version)
diff -urN boost-1.34.0.old/tools/jam/src/newstr.c boost-1.34.0/tools/jam/src/newstr.c
--- boost-1.34.0.old/tools/jam/src/newstr.c 2005-10-02 20:47:36.000000000 -0400
+++ boost-1.34.0/tools/jam/src/newstr.c 2007-06-29 18:11:37.000000000 -0400
@@ -8,6 +8,7 @@
# include "newstr.h"
# include "hash.h"
# include "compile.h"
+# include "debug.h"
# include <stddef.h>
# include <stdlib.h>
