Compilation of this test file with versions of gcc-4.5 dated 20090528 to
20100107 produce a fatal internal compiler error; comparable versions of
gcc-4.3 and gcc-4.4 do not have this problem:
% cat bug003.c
extern int (isinfl)(long double);
int
bugfun(long double x, long double y)
{
int result;
if (isinfl(x))
result = isinfl(y);
else
{
int kx, ky;
kx = ky = 1;
result = (kx == ky);
}
return (result);
}
% gcc-4.5-20100107 -g -c bug003.c
bug003.c: In function 'bugfun':
bug003.c:9:9: internal compiler error: in expand_builtin_interclass_mathfn, at
builtins.c:2313
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
A test with gcc-4.5-20090528 on IA-32 (triplets i686-pc-linux-gnu)
produces a similar report:
% gcc-4.5-20090528 -g -c bug003.c
bug003.c: In function 'bugfun':
bug003.c:9: internal compiler error: in expand_builtin_interclass_mathfn, at
builtins.c:2297
--
Summary: internal compiler error: in
expand_builtin_interclass_mathfn, at builtins.c:2313
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: beebe at math dot utah dot edu
GCC build triplet: x86_64-unknown-linux-gnu
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43730
