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| author | drh <> | 2023-06-30 11:51:36 +0000 |
|---|---|---|
| committer | drh <> | 2023-06-30 11:51:36 +0000 |
| commit | 60f41362cfa65da5baa992367156f67d738e1be3 (patch) | |
| tree | 04c36b70ac2f3fbaf19618f22654bb582426c6a5 /src/util.c | |
| parent | 2ddfa6a360ede3e370201b9f45737f8a350be198 (diff) | |
| download | sqlite-60f41362cfa65da5baa992367156f67d738e1be3.tar.gz sqlite-60f41362cfa65da5baa992367156f67d738e1be3.zip | |
Make the sum() function less precise and slower in order to avoid
harmless signed integer overflow UBSAN warnings from OSS-Fuzz.
FossilOrigin-Name: 1be0646a2c352dbf03d2af87fd48b6f9edfd68666790ac6863144ac95f3e0621
Diffstat (limited to 'src/util.c')
| -rw-r--r-- | src/util.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/util.c b/src/util.c index 256ec7c5c..ab8560839 100644 --- a/src/util.c +++ b/src/util.c @@ -1761,8 +1761,14 @@ int sqlite3VListNameToNum(VList *pIn, const char *zName, int nName){ /* Compute z = (i64)x */ void sqlite3DDFromInt(i64 x, double *z){ - z[0] = (double)x; - z[1] = (double)(x - (i64)z[0]); + if( x > -4503599627370496L && x < 4503599627370496 ){ + z[0] = (double)x; + z[1] = 0.0; + }else{ + i64 y = x % 2048; + z[0] = (double)(x - y); + z[1] = (double)(x - (i64)z[0]); + } } /* Compute z = x + y */ |