[Bug c/21360] New: wrong result of 'if' statement with comparing of floating point with gcc.

[dtemirbulatov at ru dot mvista dot com]

Following code produces wrong results:

#include stdio.h

float f = -1.0f ;

int main( void )
{

if ( (unsigned int)f != (unsigned int)-1.0f ) {
printf( %-12s %04d:NG...[%u]---[%u]\n,
__FILE__, __LINE__, (unsigned int)-1.0f, (unsigned 
int)f ) ;
} else {
printf( [%u]---[%u] :OK\n, (unsigned int)-1.0f, (unsigned
int)f ) ;
}

return( 0 ) ;
}

[EMAIL PROTECTED] tmp]$ 
/home/dinar/work/gcc-builds/gnu/gcc-i686-pc-linux-gnu/bin/gcc
sample.c -o sample
[EMAIL PROTECTED] tmp]$ ./sample
sample.c 0010:NG...[0]---[4294967295]
[EMAIL PROTECTED] tmp]$ 
/home/dinar/work/gcc-builds/gnu/gcc-i686-pc-linux-gnu/bin/gcc -v
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../configure
--prefix=/home/dinar/work/gcc-builds/gnu/gcc-i686-pc-linux-gnu/
--enable-languages=c,c++
Thread model: posix
gcc version 4.1.0 20050429 (experimental)

-- 
   Summary: wrong result of 'if' statement with  comparing of
floating point with gcc.
   Product: gcc
   Version: 4.1.0
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: dtemirbulatov at ru dot mvista dot com
CC: dtemirbulatov at ru dot mvista dot com,gcc-bugs at gcc
dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21360

[Bug middle-end/21360] wrong result of 'if' statement with comparing of floating point with gcc.

[dtemirbulatov at ru dot mvista dot com]

--- Additional Comments From dtemirbulatov at ru dot mvista dot com  
2005-05-03 15:09 ---
Created an attachment (id=8806)
 -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8806action=view)
testcase


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21360

[Bug middle-end/21360] wrong result of 'if' statement with comparing of floating point with gcc.

[dtemirbulatov at ru dot mvista dot com]

--- Additional Comments From dtemirbulatov at ru dot mvista dot com  
2005-05-03 15:11 ---
Created an attachment (id=8807)
 -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8807action=view)
proposed patch


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21360

[Bug middle-end/21360] wrong result of 'if' statement with comparing of floating point with gcc.

[dtemirbulatov at ru dot mvista dot com]

-- 
   What|Removed |Added

  Known to fail||3.4.0 4.0.0 4.1.0
  Known to work||3.3.5


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21360

[Bug c++/20992] New: error as no matching function with g++

[dtemirbulatov at ru dot mvista dot com]

g++ -v
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../configure --enable-language=c,c++
--prefix=/home/dinar/work/gcc-builds/gcc-4.0-i686-pc-linux-gnu/
Thread model: posix
gcc version 4.0.0 20050412 (prerelease)

while compiling source code:

g++ sample.c -c
sample.c: In function ‘int main()’:
sample.c:13: error: no matching function for call to ‘A::A(A)’
sample.c:4: note: candidates are: A::A(A)
sample.c:13: error:   initializing temporary from result of ‘A::A(T) [with T = 
int]’

-- 
   Summary: error as no matching function with g++
   Product: gcc
   Version: 4.0.0
Status: UNCONFIRMED
  Severity: critical
  Priority: P2
 Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: dtemirbulatov at ru dot mvista dot com
CC: dtemirbulatov at ru dot mvista dot com,gcc-bugs at gcc
dot gnu dot org
 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=20992

[Bug c++/20992] error as no matching function with g++

[dtemirbulatov at ru dot mvista dot com]

--- Additional Comments From dtemirbulatov at ru dot mvista dot com  
2005-04-13 13:36 ---
Created an attachment (id=8618)
 -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8618action=view)
source to compile


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20992