[Bug c/21607] Optimizations convert 0 to -0 leading to difference in answers.

[fsmith at mathworks dot com]

------- Additional Comments From fsmith at mathworks dot com  2005-05-16 13:50 -------
Information from gcc -save-temps -v follows:

Reading specs from /usr/libexec/gcc/darwin/ppc/3.3/specs
Thread model: posix
gcc version 3.3 20030304 (Apple Computer, Inc. build 1495)
 /usr/libexec/gcc/darwin/ppc/3.3/cc1 -E -quiet -v -D__GNUC__=3 -
D__GNUC_MINOR__=3 -D__GNUC_PATCHLEVEL__=0 -D__APPLE_CC__=1495 -D__DYNAMIC__ 
emtst_asinh_standalone.c -fPIC -O emtst_asinh_standalone.i
ignoring nonexistent directory "/usr/ppc-darwin/include"
ignoring nonexistent directory "/Local/Library/Frameworks"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /usr/include/gcc/darwin/3.3
 /usr/include
End of search list.
Framework search starts here:
 /System/Library/Frameworks
 /Library/Frameworks
End of framework search list.
 /usr/libexec/gcc/darwin/ppc/3.3/cc1 -fpreprocessed emtst_asinh_standalone.i -
fPIC -quiet -dumpbase emtst_asinh_standalone.c -auxbase 
emtst_asinh_standalone -O -version -o emtst_asinh_standalone.s
GNU C version 3.3 20030304 (Apple Computer, Inc. build 1495) (ppc-darwin)
	compiled by GNU C version 3.3 20030304 (Apple Computer, Inc. build 
1495).
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=131072
 /usr/libexec/gcc/darwin/ppc/as -arch ppc -o emtst_asinh_standalone.o 
emtst_asinh_standalone.s
 ld -arch ppc -dynamic -o a.out -lcrt1.o -lcrt2.o -L/usr/lib/gcc/darwin/3.3 -
L/usr/lib/gcc/darwin -L/usr/libexec/gcc/darwin/ppc/3.3/../../.. 
emtst_asinh_standalone.o -lgcc -lSystem |
 c++filt3


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
  GCC build triplet|                            |1495


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21607