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Overview
| Comment: | Limit the "precision" of floating-point to text conversions in the printf() function to 100,000,000. Fix for ticket [23439ea582241138]. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
d08d3405878d394e08e5d3af281246ed |
| User & Date: | drh 2020-05-23 19:58:07 |
Context
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2020-05-24
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| 00:30 | Minor fix to a comment. No code changes. (check-in: efdbb2b4 user: drh tags: trunk) | |
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2020-05-23
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| 19:58 | Limit the "precision" of floating-point to text conversions in the printf() function to 100,000,000. Fix for ticket [23439ea582241138]. (check-in: d08d3405 user: drh tags: trunk) | |
| 17:56 | Improved bytecode comment. (check-in: 9224f154 user: drh tags: trunk) | |
Changes
Changes to src/printf.c.
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** SQLITE_PRINT_BUF_SIZE to be something smaller, if desired.
*/
#ifndef SQLITE_PRINT_BUF_SIZE
# define SQLITE_PRINT_BUF_SIZE 70
#endif
#define etBUFSIZE SQLITE_PRINT_BUF_SIZE /* Size of the output buffer */
/*
** Render a string given by "fmt" into the StrAccum object.
*/
void sqlite3_str_vappendf(
sqlite3_str *pAccum, /* Accumulate results here */
const char *fmt, /* Format string */
va_list ap /* arguments */
................................................................................
}else{
realvalue = va_arg(ap,double);
}
#ifdef SQLITE_OMIT_FLOATING_POINT
length = 0;
#else
if( precision<0 ) precision = 6; /* Set default precision */
if( realvalue<0.0 ){
realvalue = -realvalue;
prefix = '-';
}else{
prefix = flag_prefix;
}
if( xtype==etGENERIC && precision>0 ) precision--;
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** SQLITE_PRINT_BUF_SIZE to be something smaller, if desired. */ #ifndef SQLITE_PRINT_BUF_SIZE # define SQLITE_PRINT_BUF_SIZE 70 #endif #define etBUFSIZE SQLITE_PRINT_BUF_SIZE /* Size of the output buffer */ /* ** Hard limit on the precision of floating-point conversions. */ #ifndef SQLITE_PRINTF_PRECISION_LIMIT # define SQLITE_FP_PRECISION_LIMIT 100000000 #endif /* ** Render a string given by "fmt" into the StrAccum object. */ void sqlite3_str_vappendf( sqlite3_str *pAccum, /* Accumulate results here */ const char *fmt, /* Format string */ va_list ap /* arguments */ ................................................................................ }else{ realvalue = va_arg(ap,double); } #ifdef SQLITE_OMIT_FLOATING_POINT length = 0; #else if( precision<0 ) precision = 6; /* Set default precision */ #ifdef SQLITE_FP_PRECISION_LIMIT if( precision>SQLITE_FP_PRECISION_LIMIT ){ precision = SQLITE_FP_PRECISION_LIMIT; } #endif if( realvalue<0.0 ){ realvalue = -realvalue; prefix = '-'; }else{ prefix = flag_prefix; } if( xtype==etGENERIC && precision>0 ) precision--; |
Changes to test/printf.test.
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do_test printf-malloc-$::iRepeat.$nTestNum {
expr {($nFail>0 && $z eq "") || ($nFail==$nBenign && $z eq $zSuccess)}
} {1}
if {$nFail == 0} break
incr nTestNum
}
}
finish_test
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do_test printf-malloc-$::iRepeat.$nTestNum {
expr {($nFail>0 && $z eq "") || ($nFail==$nBenign && $z eq $zSuccess)}
} {1}
if {$nFail == 0} break
incr nTestNum
}
}
# 2020-05-23
# ticket 23439ea582241138
#
do_execsql_test printf-16.1 {
SELECT printf('%.*g',2147483647,0.01);
} {0.01}
finish_test
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