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-rw-r--r--gcc/fortran/symbol.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/fortran/symbol.c b/gcc/fortran/symbol.c
index b74318c..2c4ce36 100644
--- a/gcc/fortran/symbol.c
+++ b/gcc/fortran/symbol.c
@@ -4169,6 +4169,7 @@ generate_isocbinding_symbol (const char *mod_name, iso_c_binding_symbol s,
tmp_sym->result = tmp_sym;
tmp_sym->attr.external = 1;
tmp_sym->attr.use_assoc = 0;
+ tmp_sym->attr.pure = 1;
tmp_sym->attr.if_source = IFSRC_UNKNOWN;
tmp_sym->attr.proc = PROC_UNKNOWN;
}