Follow up to PR 43836 and http://gcc.gnu.org/ml/fortran/2010-04/msg00222.html
> It would be good to set TREE_NOTHROW also on libgfortran library calls > that are known not to throw exceptions (I guess most of them, except > those that do IO). POSIX lists which libc functions have to and can throw, cf. http://www.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_09.html#tag_02_09_05 In the glibc headers one can also look for functions which use __THROW on prototypes (__THROW means the function never throws) and which don't; also the __NTH macro and __REDIRECT_NTH. In libgfortran itself, one can use __attribute__ ((nothrow)), cf. http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html In the front end (call to library routines) TREE_NOTHROW. -- Summary: Set TREE_NOTHROW also on libgfortran library calls Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: burnus at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43837
