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Overview
Comment: | Avoid comparing a variable to NULL after the memory it is pointing to has been freed. This is harmless, as implemented, but it is technically undefined behavior in C. (This is a bug in the specification of the C language, imho.) |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
4e126233caf6ef3d439955af86625475 |
User & Date: | drh 2016-11-19 17:50:20.644 |
Context
2016-11-19
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20:11 | minor simplification, and don't free zUuid if it was NULL ... (check-in: d6cb724e user: jan.nijtmans tags: trunk) | |
17:50 | Avoid comparing a variable to NULL after the memory it is pointing to has been freed. This is harmless, as implemented, but it is technically undefined behavior in C. (This is a bug in the specification of the C language, imho.) ... (check-in: 4e126233 user: drh tags: trunk) | |
2016-11-18
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08:22 | Remove some unnecessary spaces. ... (check-in: 467c4269 user: jan.nijtmans tags: trunk) | |
Changes
Changes to src/info.c.
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67 68 69 70 71 72 73 | if( zUuid ){ zDate = db_text(0, "SELECT datetime(mtime) || ' UTC' FROM event WHERE objid=%d", rid ); /* 01234567890123 */ fossil_print("%-13s %s %s\n", zUuidName, zUuid, zDate ? zDate : ""); | < > | 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 | if( zUuid ){ zDate = db_text(0, "SELECT datetime(mtime) || ' UTC' FROM event WHERE objid=%d", rid ); /* 01234567890123 */ fossil_print("%-13s %s %s\n", zUuidName, zUuid, zDate ? zDate : ""); free(zDate); } if( zUuid && showComment ){ zComment = db_text(0, "SELECT coalesce(ecomment,comment) || " " ' (user: ' || coalesce(euser,user,'?') || ')' " " FROM event WHERE objid=%d", rid ); } free(zUuid); if( showFamily ){ db_prepare(&q, "SELECT uuid, pid, isprim FROM plink JOIN blob ON pid=rid " " WHERE cid=%d" " ORDER BY isprim DESC, mtime DESC /*sort*/", rid); while( db_step(&q)==SQLITE_ROW ){ const char *zUuid = db_column_text(&q, 0); const char *zType = db_column_int(&q, 2) ? "parent:" : "merged-from:"; |
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