[Bug bootstrap/31235] New: Bootstrap comparison failure with -gstabs

feri1024 at t-email dot hu gcc-bugzilla@gcc.gnu.org
Fri Mar 16 22:43:00 GMT 2007


Configured and built with:

../gcc-4.2-20070221/configure --enable-languages=c --enable-bootstrap
--disable-nls && make BOOT_CFLAGS="-gstabs"

The result is:

[...]
Comparing stages 2 and 3
warning: ./cc1-checksum.o differs
Bootstrap comparison failure!
./dbxout.o differs
./insn-emit.o differs
./varasm.o differs
[...]

I recompiled these sources with stage 2 and stage 3 compilers into assembly,
for dbxout.c I got the following:

--- dbxout-stage2.s     2007-03-16 21:27:01.000000000 +0100
+++ dbxout-stage3.s     2007-03-16 21:29:42.000000000 +0100
@@ -14245,12 +14245,12 @@
        leave
        ret
        .size   dbxout_block, .-dbxout_block
-       .stabs  "begin_label:(0,39)=ar(5,28);0;19;(0,2)",128,0,0,-52
+       .stabs  "begin_label:(0,30)",128,0,0,-52
        .stabn  192,0,0,.LFBB69-.LFBB69
        .stabs  "did_output:(0,1)",128,0,0,-32
        .stabs  "blocknum:(0,1)",128,0,0,-28
        .stabn  192,0,0,.LBB180-.LFBB69
-       .stabs  "buf:(0,39)",128,0,0,-72
+       .stabs  "buf:(0,30)",128,0,0,-72
        .stabs  "scope_start:(10,36)",128,0,0,-24
        .stabn  192,0,0,.LBB181-.LFBB69
        .stabs  "decl:(47,10)",128,0,0,-20

The other files differ in the same manner. It's very similar to
http://gcc.gnu.org/ml/gcc/2001-09/msg00882.html.


-- 
           Summary: Bootstrap comparison failure with -gstabs
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: feri1024 at t-email dot hu
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31235



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