do not clobber errno

[protos/libecoli.git] / lib / ecoli_node_int.c

diff --git a/lib/ecoli_node_int.c b/lib/ecoli_node_int.c
index 34fd501..c72ee04 100644 (file)
--- a/lib/ecoli_node_int.c
+++ b/lib/ecoli_node_int.c
@@ -43,6 +43,7 @@ static int parse_llint(struct ec_node_int_uint *node, const char *str,
        int64_t *val)
 {
        char *endptr;
+       int save_errno = errno;
 
        errno = 0;
        *val = strtoll(str, &endptr, node->base);
@@ -66,6 +67,7 @@ static int parse_llint(struct ec_node_int_uint *node, const char *str,
                return -1;
        }
 
+       errno = save_errno;
        return 0;
 }
 
@@ -73,6 +75,7 @@ static int parse_ullint(struct ec_node_int_uint *node, const char *str,
                        uint64_t *val)
 {
        char *endptr;
+       int save_errno = errno;
 
        /* since a negative input is silently converted to a positive
         * one by strtoull(), first check that it is positive */
@@ -95,6 +98,7 @@ static int parse_ullint(struct ec_node_int_uint *node, const char *str,
        if (*endptr != 0)
                return -1;
 
+       errno = save_errno;
        return 0;
 }