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Remove unused opcodes from the VDBE and fix a bug in the substr() function. (CVS 405)

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FossilOrigin-Name: e8611e0c052ddac477f83df485fa5dc882593de0
This commit is contained in:
drh
2002-02-28 03:31:10 +00:00
parent fbc990826c
commit 653bc75992
5 changed files with 86 additions and 344 deletions
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7
src/func.c
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@@ -16,7 +16,7 @@
** sqliteRegisterBuildinFunctions() found at the bottom of the file.
** All other code has file scope.
**
** $Id: func.c,v 1.10 2002/02/28 03:14:18 drh Exp $
** $Id: func.c,v 1.11 2002/02/28 03:31:11 drh Exp $
*/
#include <ctype.h>
#include <math.h>
@@ -108,6 +108,10 @@ static void substrFunc(sqlite_func *context, int argc, const char **argv){
#endif
if( p1<0 ){
p1 += len;
if( p1<0 ){
p2 += p1;
p1 = 0;
}
}else if( p1>0 ){
p1--;
}
@@ -124,6 +128,7 @@ static void substrFunc(sqlite_func *context, int argc, const char **argv){
if( (z[i]&0xc0)!=0x80 ) p2++;
}
#endif
if( p2<0 ) p2 = 0;
sqlite_set_result_string(context, &z[p1], p2);
}