From: "Andreas Tobler" <[EMAIL PROTECTED]>
Rainer Orth wrote:
In c99-math-double-1.c, the first C99_MATH_TESTS invocation abort()s.
Single-stepping in gdb (which couldn't display the macro, even if
compiled
with -g3 ;-) revealed that this clause
if (fetestexcept (FE_ALL_EXCEPT) != 0) \
abort(); \
fails. fetestexcept() returned 0x10, i.e. FE_INVALID.
Argh, you've beaten me ;)
The 'if (isinf (nan))' on line 62 of c99-math.h
changes the exception, a fetestexception(FE_ALL_EXCEPT) after this if
returns the 0x10. Before it was 0x0.
Andreas
Okay, thanks both of you for tracking this down.
So the solaris definition of isinf is not exception-safe in the presence of
nans. Try inserting this code into c99-math-double-1.c after it includes
math headers. (This is what fixincludes puts into the header for solaris
10). See if it helps:
#undef isinf
#define isinf(x) __extension__ ({ const __typeof (x) __x_i = (x); \
__builtin_expect(sizeof(__x_i) == sizeof(float) \
? isgreater(__builtin_fabsf(__x_i),__FLT_MAX__) \
: sizeof(__x_i) == sizeof(long double) \
? isgreater(__builtin_fabsl(__x_i),__LDBL_MAX__) \
: isgreater(__builtin_fabs(__x_i),__DBL_MAX__), 0); })
It may pass isinf, but fail on a later if-abort. But hopefully this is the
only broken bit in that header on solaris.
--Kaveh
--
Kaveh R. Ghazi
