Re: profiledbootstrap broken on powerpc-apple-darwin

[Mike Stump <mrs at apple dot com>]

On Sep 8, 2004, at 2:26 PM, Caroline Tice wrote:
> I'm getting the following failures doing a profiled bootstrap using 
> FSF mainline on a G4 running powerpc-apple-darwin.  Normal bootstrap 
> works fine, and profiled bootstrap appears to work on x86 running 
> Linux.  I believe this has been broken since last Friday.  Does 
> anybody have any ideas as to who/what broke this?

> stage1/xgcc -Bstage1/ -B/usr/local/powerpc-apple-darwin7.0.0/bin/   -g 
> -O2 -mdynamic-no-pic -fprofile-generate -DIN_GCC   -W -Wall 
> -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -pedantic 
> -Wno-long-long -Wno-variadic-macros -Wold-style-definition -Werror 
> -fno-common   -DHAVE_CONFIG_H -DGENERATOR_FILE  -o gengtype \
>  gengtype.o gengtype-lex.o gengtype-yacc.o 
> ../build-powerpc-apple-darwin7.0.0/libiberty/libiberty.a
> ./gengtype

> make[2]: *** [s-gtype] Bus error

Ah!  Cool, someone else is seeing this...  I was seeing it with a patch 
that should not have failed to bootstrap.  I wonder if someone killed 
binary compatibility between stage1/stage[^1]....  :-(

*** config/darwin.h.~1~ Wed Dec 10 17:22:30 2003
--- config/darwin.h     Thu Jan 22 18:03:20 2004
*************** objc_section_init (void)                        \
*** 712,717 ****
--- 712,729 ----
  #define GLOBAL_ASM_OP ".globl "
  #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label

+ #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGNMENT)     
\
+   do {                                                                
        \
+     unsigned int localsize = SIZE;                                    
\
+     if (localsize == 0)                                               
        \
+       ++localsize;                                                    
\
+     if (FILE)                                                         
\
+       fprintf (FILE, "\t.zerofill __DATA,__bss,");                    
\
+     assemble_name (FILE, NAME);                                       
        \
+     fprintf (FILE, ",%u,%d\n", localsize,                             
\
+            floor_log2 (ALIGNMENT / BITS_PER_UNIT));                   
\
+ }  while (0)
+
  /* Emit an assembler directive to set visibility for a symbol.  Used
     to support visibility attribute and Darwin's private extern
     feature. */
--------------

is the patch, just in case someone else wants a simpler testcase...  In 
time, I'll have to tack this down if I want my patch in...  While I 
think this may be the same problem, it might not be...