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authorPaul Thomas <pault@gcc.gnu.org>2019-09-13 05:41:01 +0000
committerPaul Thomas <pault@gcc.gnu.org>2019-09-13 05:41:01 +0000
commite4dc7c6572d50dd9de2331521b8e8ac39d905527 (patch)
treed0b22c7addbf9d5be31b672e7444714a188f4c6c /gcc/fortran
parente5b3c74bf0686faf3932249a9756c6d3145a1531 (diff)
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re PR fortran/91717 (ICE on concatenating deferred-length character and character literal)
2019-09-13 Paul Thomas <pault@gcc.gnu.org> PR fortran/91717 * dependency.c (gfc_dep_resolver): Flag identical components and exit with return value 1 if set and no array refs. 2019-09-13 Paul Thomas <pault@gcc.gnu.org> PR fortran/91717 * gfortran.dg/dependency_55.f90 : New test. From-SVN: r275696
Diffstat (limited to 'gcc/fortran')
-rw-r--r--gcc/fortran/ChangeLog6
-rw-r--r--gcc/fortran/dependency.c7
2 files changed, 13 insertions, 0 deletions
diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index 1702199..bf721c7 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,9 @@
+2019-09-13 Paul Thomas <pault@gcc.gnu.org>
+
+ PR fortran/91717
+ * dependency.c (gfc_dep_resolver): Flag identical components
+ and exit with return value 1 if set and no array refs.
+
2019-09-11 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/91553
diff --git a/gcc/fortran/dependency.c b/gcc/fortran/dependency.c
index da4a37c..5114870 100644
--- a/gcc/fortran/dependency.c
+++ b/gcc/fortran/dependency.c
@@ -2096,6 +2096,7 @@ gfc_dep_resolver (gfc_ref *lref, gfc_ref *rref, gfc_reverse *reverse,
int m;
gfc_dependency fin_dep;
gfc_dependency this_dep;
+ bool same_component = false;
this_dep = GFC_DEP_ERROR;
fin_dep = GFC_DEP_ERROR;
@@ -2115,6 +2116,8 @@ gfc_dep_resolver (gfc_ref *lref, gfc_ref *rref, gfc_reverse *reverse,
components. */
if (lref->u.c.component != rref->u.c.component)
return 0;
+
+ same_component = true;
break;
case REF_SUBSTRING:
@@ -2280,6 +2283,10 @@ gfc_dep_resolver (gfc_ref *lref, gfc_ref *rref, gfc_reverse *reverse,
if (lref || rref)
return 1;
+ /* This can result from concatenation of assumed length string components. */
+ if (same_component && fin_dep == GFC_DEP_ERROR)
+ return 1;
+
/* If we haven't seen any array refs then something went wrong. */
gcc_assert (fin_dep != GFC_DEP_ERROR);