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-rw-r--r--gcc/fortran/symbol.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/fortran/symbol.c b/gcc/fortran/symbol.c
index b2f0f2b..e2f13b8 100644
--- a/gcc/fortran/symbol.c
+++ b/gcc/fortran/symbol.c
@@ -1945,6 +1945,8 @@ gfc_use_derived (gfc_symbol *sym)
gfc_symtree *st;
int i;
+ if (!sym) return NULL;
+
if (sym->components != NULL || sym->attr.zero_comp)
return sym; /* Already defined. */