the testcase uplevi.c is to show that for OpenMP programs, gcc reference
uplevel variable by [%fp - 4] in each thread.
micro# cat uplevi.c
int main()
{
int i;
void sub()
{
printf("0x%x\n", &i);
}
#pragma omp parallel num_threads(4)
sub();
return 0;
}
micro# /import/dr3/s10/gcc-4.2/bin/gcc uplevi.c -fopenmp -w
micro# ./a.out
0xfeffbecc
0xfeefbecc
0xffbffa8c
0xff0fbecc
micro# /import/dr3/s10/gcc-4.2/bin/gcc -v
Using built-in specs.
Target: sparc-sun-solaris2.10
Configured with: /import/dr2/starlex/1/gcc-4.2-20070228/configure
--prefix=/import/dr3/s10/gcc-4.2 --enable-languages=c,c++,fortran
--enable-rpath --with-mpfr=/import/dr3/s10/gcc-4.2
--with-gmp=/import/dr3/s10/gcc-4.2
Thread model: posix
gcc version 4.2.0 20070228 (prerelease)
--
Summary: gcc handled OpenMP programs with uplevel reference
wrongly
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hailijuan at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36354
