Hello world,
the attached patch fixes the PR, a regression introduced by r265649,
by special-casing those intrinsics of the min/max family which
need to be special-cased.
This is actually something that had been fixed before (PR 14377),
but at the time, no test case had been committed.
Regression-tested. OK for trunk?
Regards
Thomas
2019-01-02 Thomas Koenig <tkoe...@gcc.gnu.org>
PR fortran/88658
* gfortran.h: Add macro gfc_real_4_kind
* simplify.c (simplify_min_max): Special case for the types of
AMAX0, AMIN0, MAX1 and MIN1, which actually change the types of
their arguments.
2019-01-02 Thomas Koenig <tkoe...@gcc.gnu.org>
PR fortran/88658
* gfortran.dg/min_max_type_2.f90: New test.
Index: gfortran.h
===================================================================
--- gfortran.h (Revision 267335)
+++ gfortran.h (Arbeitskopie)
@@ -2967,6 +2967,7 @@ extern int gfc_character_storage_size;
#define gfc_logical_4_kind 4
#define gfc_integer_4_kind 4
+#define gfc_real_4_kind 4
/* symbol.c */
void gfc_clear_new_implicit (void);
Index: simplify.c
===================================================================
--- simplify.c (Revision 267335)
+++ simplify.c (Arbeitskopie)
@@ -4963,6 +4963,8 @@ static gfc_expr *
simplify_min_max (gfc_expr *expr, int sign)
{
gfc_actual_arglist *arg, *last, *extremum;
+ gfc_expr *tmp, *ret;
+ const char *fname;
last = NULL;
extremum = NULL;
@@ -4995,7 +4997,27 @@ simplify_min_max (gfc_expr *expr, int sign)
if (expr->value.function.actual->next != NULL)
return NULL;
- return gfc_copy_expr (expr->value.function.actual->expr);
+ /* Handle special cases of specific functions (min|max)1 and
+ a(min|max)0. */
+
+ tmp = expr->value.function.actual->expr;
+ fname = expr->value.function.isym->name;
+
+ if ((tmp->ts.type != BT_INTEGER || tmp->ts.kind != gfc_integer_4_kind)
+ && (strcmp (fname, "min1") == 0 || strcmp (fname, "max1") == 0))
+ {
+ ret = gfc_convert_constant (tmp, BT_INTEGER, gfc_integer_4_kind);
+ }
+ else if ((tmp->ts.type != BT_REAL || tmp->ts.kind != gfc_real_4_kind)
+ && (strcmp (fname, "amin0") == 0 || strcmp (fname, "amax0") == 0))
+ {
+ ret = gfc_convert_constant (tmp, BT_REAL, gfc_real_4_kind);
+ }
+ else
+ ret = gfc_copy_expr (tmp);
+
+ return ret;
+
}
! { dg-do run }
! PR 88658 - make sure the types for min1, max1, amax0 and amin0 are
! correct when simplified
program main
real :: RVCOMP
character (len=12) :: line
integer :: n
RVCOMP = MAX1(2.3, 3.1, 4.4) / 5
if (rvcomp /= 0.) stop 1
rvcomp = min1(2.3, 3.1, 5.1) / 5
if (rvcomp /= 0.) stop 2
write (unit=line, fmt='(F12.5)') amax0(42, 21, 7)
if (line /= ' 42.00000') stop 3
write (unit=line, fmt='(F12.5)') amin0(42,21,7)
if (line /= ' 7.00000') stop 4
end program main
