optimization/9630: [3.2/3.3/3.4 regression] crash with -freg-struct-return in C++ code

[Steven Bosscher]

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9630

Stefan, Wolfgang,

I cannot reproduce this bug with yesterdays 3.3 sources for 
i586-pc-linux-gnu.
Do you still see it?  Maybe this one is present on 3.2 but not 3.3?  If 
so, this
shouldn't be marked as a 3.3/3.4 regression.

Greetz
Steven


# gcc-3.3 -v -lstdc++ test.cc -freg-struct-return -O2
Reading specs from /opt/experimental/lib/gcc-lib/i586-pc-linux-gnu/3.3/specs
Configured with: ../gcc-3.3/configure --disable-nls --with-gnu-as 
--with-gnu-ld --prefix=/opt/experimental --program-suffix=-3.3 
--enable-languages=c,c++
Thread model: posix
gcc version 3.3 20030311 (prerelease)
 /opt/experimental/lib/gcc-lib/i586-pc-linux-gnu/3.3/cc1plus -quiet -v 
-D__GNUC__=3 -D__GNUC_MINOR__=3 -D__GNUC_PATCHLEVEL__=0 -D_GNU_SOURCE 
test.cc -D__GNUG__=3 -quiet -dumpbase test.cc -auxbase test -O2 -version 
-freg-struct-return -o /tmp/cc1NHg6T.s
GNU C++ version 3.3 20030311 (prerelease) (i586-pc-linux-gnu)
    compiled by GNU C version 3.3 20030311 (prerelease).
GGC heuristics: --param ggc-min-expand=42 --param ggc-min-heapsize=23891
ignoring nonexistent directory "/opt/experimental/i586-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /opt/experimental/include/c++/3.3
 /opt/experimental/include/c++/3.3/i586-pc-linux-gnu
 /opt/experimental/include/c++/3.3/backward
 /usr/local/include
 /opt/experimental/include
 /opt/experimental/lib/gcc-lib/i586-pc-linux-gnu/3.3/include
 /usr/include
End of search list.
 as -V -Qy -o /tmp/cccnvLCd.o /tmp/cc1NHg6T.s
GNU assembler version 2.11.90.0.24 (i486-suse-linux) using BFD version 
2.11.90.0.24
 /opt/experimental/lib/gcc-lib/i586-pc-linux-gnu/3.3/collect2 -m 
elf_i386 -dynamic-linker /lib/ld-linux.so.2 /usr/lib/crt1.o 
/usr/lib/crti.o 
/opt/experimental/lib/gcc-lib/i586-pc-linux-gnu/3.3/crtbegin.o 
-L/opt/experimental/lib/gcc-lib/i586-pc-linux-gnu/3.3 
-L/opt/experimental/lib/gcc-lib/i586-pc-linux-gnu/3.3/../../.. -lstdc++ 
/tmp/cccnvLCd.o -lgcc -lgcc_eh -lc -lgcc -lgcc_eh 
/opt/experimental/lib/gcc-lib/i586-pc-linux-gnu/3.3/crtend.o /usr/lib/crtn.o

# LD_LIBRARY_PATH=/opt/experimental/lib/ a.out
2