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Fix for CONC-510: CoreDump using set env MARIADB_PLUGIN_DIR

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The macro CLEAR_CLIENT_ERROR needs to check if mysql->net.extension
was already allocated to prevent access of uninitialized memory.
This commit is contained in:
Georg Richter
2020-10-24 07:54:59 +02:00
parent cfc36a46d1
commit 7c5a40b00d
1 changed files with 2 additions and 1 deletions
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3
include/mysql.h
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@@ -148,7 +148,8 @@ extern const char *SQLSTATE_UNKNOWN;
(a)->net.last_errno= 0;\
strcpy((a)->net.sqlstate, "00000");\
(a)->net.last_error[0]= '\0';\
(a)->net.extension->extended_errno= 0;\
if ((a)->net.extension)\
(a)->net.extension->extended_errno= 0;\
} while (0)
#define MYSQL_COUNT_ERROR (~(unsigned long long) 0)