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| author | Thomas Koenig <tkoenig@gcc.gnu.org> | 2019-05-19 08:22:41 +0000 |
|---|---|---|
| committer | Thomas Koenig <tkoenig@gcc.gnu.org> | 2019-05-19 08:22:41 +0000 |
| commit | 14688b8de389740f07079a945edf887a682fc9d1 (patch) | |
| tree | 82fc78b1edd586b165fb22d31a16cbda45a475ff /gcc/fortran/trans-decl.c | |
| parent | f12b0a62268cc6a1ef613e09c2b93109ac191f0e (diff) | |
| download | gcc-14688b8de389740f07079a945edf887a682fc9d1.zip gcc-14688b8de389740f07079a945edf887a682fc9d1.tar.gz gcc-14688b8de389740f07079a945edf887a682fc9d1.tar.bz2 | |
re PR fortran/90329 (Incompatibility between gfortran and C lapack calls)
2019-05-19 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/90329
* invoke.texi: Document -fbroken-callers.
* lang.opt: Add -fbroken-callers.
* trans-decl.c (create_function_arglist): Only set
DECL_HIDDEN_STRING_LENGTH if flag_broken_callers is set.
From-SVN: r271376
Diffstat (limited to 'gcc/fortran/trans-decl.c')
| -rw-r--r-- | gcc/fortran/trans-decl.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/fortran/trans-decl.c b/gcc/fortran/trans-decl.c index 8420870..7cf1ec54 100644 --- a/gcc/fortran/trans-decl.c +++ b/gcc/fortran/trans-decl.c @@ -2516,7 +2516,11 @@ create_function_arglist (gfc_symbol * sym) DECL_ARG_TYPE (length) = len_type; TREE_READONLY (length) = 1; gfc_finish_decl (length); - if (f->sym->ts.u.cl + + /* Marking the length DECL_HIDDEN_STRING_LENGTH will lead + to tail calls being disabled. Only do that if we + potentially have broken callers. */ + if (flag_broken_callers && f->sym->ts.u.cl && f->sym->ts.u.cl->length && f->sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) DECL_HIDDEN_STRING_LENGTH (length) = 1; |