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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

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Overview
Comment:Make the ".schema" command in the CLI resistant to corrupt database files.
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SHA3-256: f22c7e229ea4626c5268d61de3964521cf6a2735290cbd1518d68731ba6cca90
User & Date: drh 2019-05-09 18:13:30
Context
2019-05-09
18:33
Fix a problem in the ".recover" command allowing a circular loop of b-tree pages in a database file to cause an infinite loop. check-in: 8d2a062e user: dan tags: trunk
18:13
Make the ".schema" command in the CLI resistant to corrupt database files. check-in: f22c7e22 user: drh tags: trunk
17:54
Fix a crash in the sqlite_dbdata module that could occur if a pointer within an overflow chain in a corrupt database pointed past the end of the db. check-in: 3eae4e30 user: dan tags: trunk
Changes
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Changes to src/shell.c.in.

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/*
** Print a schema statement.  Part of MODE_Semi and MODE_Pretty output.
**
** This routine converts some CREATE TABLE statements for shadow tables
** in FTS3/4/5 into CREATE TABLE IF NOT EXISTS statements.
*/
static void printSchemaLine(FILE *out, const char *z, const char *zTail){


  if( sqlite3_strglob("CREATE TABLE ['\"]*", z)==0 ){
    utf8_printf(out, "CREATE TABLE IF NOT EXISTS %s%s", z+13, zTail);
  }else{
    utf8_printf(out, "%s%s", z, zTail);
  }
}
static void printSchemaLineN(FILE *out, char *z, int n, const char *zTail){







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/*
** Print a schema statement.  Part of MODE_Semi and MODE_Pretty output.
**
** This routine converts some CREATE TABLE statements for shadow tables
** in FTS3/4/5 into CREATE TABLE IF NOT EXISTS statements.
*/
static void printSchemaLine(FILE *out, const char *z, const char *zTail){
  if( z==0 ) return;
  if( zTail==0 ) return;
  if( sqlite3_strglob("CREATE TABLE ['\"]*", z)==0 ){
    utf8_printf(out, "CREATE TABLE IF NOT EXISTS %s%s", z+13, zTail);
  }else{
    utf8_printf(out, "%s%s", z, zTail);
  }
}
static void printSchemaLineN(FILE *out, char *z, int n, const char *zTail){