http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55490
Bug #: 55490
Summary: wrong function argument evalution ?
Classification: Unclassified
Product: gcc
Version: 4.3.4
Status: UNCONFIRMED
Severity: blocker
Priority: P3
Component: other
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: d...@ontooo.com
Here the code:
<<<
// File: c:/bsd/rigel/sort/Zlog.c
// Date: Sun Nov 25 19:49:19 2012
// (C) OntoOO/ Dennis de Champeaux
#include <time.h>
#include <stdio.h>
#include <math.h>
main (int argc, char *argv[]) {
printf("Running ZLog.c ...\n");
int lng = 16777215;
double x = log(lng);
int j = floor(x);
printf("%d %f %d\n", lng, x, j);
test(floor(log(lng)));
}
test(int k) {
printf("test %d \n", k);
}
>>>
Here the compilation:
$ gcc -v -save-temps Zlog.c
Using built-in specs.
Target: i686-pc-cygwin
Configured with:
/gnu/gcc/releases/respins/4.3.4-4/gcc4-4.3.4-4/src/gcc-4.3.4/configure
--srcdir=/gn
u/gcc/releases/respins/4.3.4-4/gcc4-4.3.4-4/src/gcc-4.3.4 --prefix=/usr
--exec-prefix=/usr --bindir=
/usr/bin --sbindir=/usr/sbin --libexecdir=/usr/lib --datadir=/usr/share
--localstatedir=/var --sysco
nfdir=/etc --infodir=/usr/share/info --mandir=/usr/share/man -C
--datadir=/usr/share --infodir=/usr/
share/info --mandir=/usr/share/man -v --with-gmp=/usr --with-mpfr=/usr
--enable-bootstrap --enable-v
ersion-specific-runtime-libs --with-slibdir=/usr/bin --libexecdir=/usr/lib
--enable-static --enable-
shared --enable-shared-libgcc --disable-__cxa_atexit --with-gnu-ld
--with-gnu-as --with-dwarf2 --dis
able-sjlj-exceptions --enable-languages=ada,c,c++,fortran,java,objc,obj-c++
--disable-symvers --enab
le-libjava --program-suffix=-4 --enable-libgomp --enable-libssp --enable-libada
--enable-threads=pos
ix --with-arch=i686 --with-tune=generic --enable-libgcj-sublibs CC=gcc-4
CXX=g++-4 CC_FOR_TARGET=gcc
-4 CXX_FOR_TARGET=g++-4 GNATMAKE_FOR_TARGET=gnatmake
GNATBIND_FOR_TARGET=gnatbind --with-ecj-jar=/us
r/share/java/ecj.jar
Thread model: posix
gcc version 4.3.4 20090804 (release) 1 (GCC)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-mtune=generic' '-march=i686'
/usr/lib/gcc/i686-pc-cygwin/4.3.4/cc1.exe -E -quiet -v -D__CYGWIN32__
-D__CYGWIN__ -Dunix -D__unix_
_ -D__unix -idirafter
/usr/lib/gcc/i686-pc-cygwin/4.3.4/../../../../include/w32api -idirafter /usr/l
ib/gcc/i686-pc-cygwin/4.3.4/../../../../i686-pc-cygwin/lib/../../include/w32api
Zlog.c -mtune=generi
c -march=i686 -fpch-preprocess -o Zlog.i
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory
"/usr/lib/gcc/i686-pc-cygwin/4.3.4/../../../../i686-pc-cygwin/include
"
ignoring duplicate directory
"/usr/lib/gcc/i686-pc-cygwin/4.3.4/../../../../i686-pc-cygwin/lib/../..
/include/w32api"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/i686-pc-cygwin/4.3.4/include
/usr/lib/gcc/i686-pc-cygwin/4.3.4/include-fixed
/usr/include
/usr/lib/gcc/i686-pc-cygwin/4.3.4/../../../../include/w32api
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-mtune=generic' '-march=i686'
/usr/lib/gcc/i686-pc-cygwin/4.3.4/cc1.exe -fpreprocessed Zlog.i -quiet
-dumpbase Zlog.c -mtune=gene
ric -march=i686 -auxbase Zlog -version -o Zlog.s
GNU C (GCC) version 4.3.4 20090804 (release) 1 (i686-pc-cygwin)
compiled by GNU C version 4.3.4 20090804 (release) 1, GMP version
4.3.1, MPFR version 2.4.1-
p5.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: ab3a9276892118426681bf5c260e9d16
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-mtune=generic' '-march=i686'
/usr/lib/gcc/i686-pc-cygwin/4.3.4/../../../../i686-pc-cygwin/bin/as.exe -v -o
Zlog.o Zlog.s
GNU assembler version 2.20.51 (i686-cygwin) using BFD version (GNU Binutils)
2.20.51.20100410
COMPILER_PATH=/usr/lib/gcc/i686-pc-cygwin/4.3.4/:/usr/lib/gcc/i686-pc-cygwin/4.3.4/:/usr/lib/gcc/i68
6-pc-cygwin/:/usr/lib/gcc/i686-pc-cygwin/4.3.4/:/usr/lib/gcc/i686-pc-cygwin/:/usr/lib/gcc/i686-pc-cy
gwin/4.3.4/:/usr/lib/gcc/i686-pc-cygwin/:/usr/lib/gcc/i686-pc-cygwin/4.3.4/../../../../i686-pc-cygwi
n/bin/
LIBRARY_PATH=/usr/lib/gcc/i686-pc-cygwin/4.3.4/:/usr/lib/gcc/i686-pc-cygwin/4.3.4/:/usr/lib/gcc/i686
-pc-cygwin/4.3.4/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-mtune=generic' '-march=i686'
/usr/lib/gcc/i686-pc-cygwin/4.3.4/collect2.exe -tsaware --wrap _Znwj --wrap
_Znaj --wrap _ZdlPv --w
rap _ZdaPv --wrap _ZnwjRKSt9nothrow_t --wrap _ZnajRKSt9nothrow_t --wrap
_ZdlPvRKSt9nothrow_t --wrap
_ZdaPvRKSt9nothrow_t -Bdynamic --dll-search-prefix=cyg -u
___register_frame_info -u ___deregister_fr
ame_info /usr/lib/gcc/i686-pc-cygwin/4.3.4/../../../crt0.o
/usr/lib/gcc/i686-pc-cygwin/4.3.4/crtbegi
n.o -L/usr/lib/gcc/i686-pc-cygwin/4.3.4 -L/usr/lib/gcc/i686-pc-cygwin/4.3.4
-L/usr/lib/gcc/i686-pc-c
ygwin/4.3.4/../../.. Zlog.o -lgcc_s -lgcc -lgcc_eh -lcygwin -luser32 -lkernel32
-ladvapi32 -lshell32
-lgcc_s -lgcc -lgcc_eh /usr/lib/gcc/i686-pc-cygwin/4.3.4/crtend.o
Here the output:
$ ./a.exe
Running ZLog.c ...
16777215 16.635532 16
test 0
I >>think<< that the zero should be 16.
Why do I get a zero ????
