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commit    8559b40c5e3fb068d0dfd81d4a5a9f7411f2cbba
Author:   Michael Meskes <meskes@postgresql.org>
Date:     Tue Mar 13 23:47:49 2018 +0000
First released in: 11.0, 9.3.23, 9.4.18, 9.5.13, 9.6.9, 10.4

    Fix double frees in ecpg.
    
    Patch by Patrick Krecker <patrick@judicata.com>


 src/interfaces/ecpg/preproc/ecpg.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/interfaces/ecpg/preproc/ecpg.c b/src/interfaces/ecpg/preproc/ecpg.c
index bad0a667fc2..d938ba67f06 100644
--- a/src/interfaces/ecpg/preproc/ecpg.c
+++ b/src/interfaces/ecpg/preproc/ecpg.c
@@ -327,6 +327,7 @@ main(int argc, char *const argv[])
 						fprintf(stderr, _("%s: could not open file \"%s\": %s\n"),
 								progname, output_filename, strerror(errno));
 						free(output_filename);
+						output_filename = NULL;
 						free(input_filename);
 						continue;
 					}
@@ -474,8 +475,10 @@ main(int argc, char *const argv[])
 				}
 			}
 
-			if (output_filename && out_option == 0)
+			if (output_filename && out_option == 0) {
 				free(output_filename);
+				output_filename = NULL;
+			}
 
 			free(input_filename);
 		}


[parent: 1bfb5672306d]