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-rw-r--r--src/backend/utils/misc/guc.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index d6cd009f239..82d8efbc963 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -4215,8 +4215,7 @@ SetConfigOption(const char *name, const char *value,
/*
* Fetch the current value of the option `name', as a string.
*
- * If the option doesn't exist, return NULL if missing_ok is true (NOTE that
- * this cannot be distinguished from a string variable with a NULL value!),
+ * If the option doesn't exist, return NULL if missing_ok is true,
* otherwise throw an ereport and don't return.
*
* If restrict_privileged is true, we also enforce that only superusers and
@@ -4259,7 +4258,8 @@ GetConfigOption(const char *name, bool missing_ok, bool restrict_privileged)
return buffer;
case PGC_STRING:
- return *((struct config_string *) record)->variable;
+ return *((struct config_string *) record)->variable ?
+ *((struct config_string *) record)->variable : "";
case PGC_ENUM:
return config_enum_lookup_by_value((struct config_enum *) record,
@@ -4306,7 +4306,8 @@ GetConfigOptionResetString(const char *name)
return buffer;
case PGC_STRING:
- return ((struct config_string *) record)->reset_val;
+ return ((struct config_string *) record)->reset_val ?
+ ((struct config_string *) record)->reset_val : "";
case PGC_ENUM:
return config_enum_lookup_by_value((struct config_enum *) record,