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Make the sum() function less precise and slower in order to avoid

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harmless signed integer overflow UBSAN warnings from OSS-Fuzz.

FossilOrigin-Name: 1be0646a2c352dbf03d2af87fd48b6f9edfd68666790ac6863144ac95f3e0621
This commit is contained in:
drh
2023-06-30 11:51:36 +00:00
parent 2ddfa6a360
commit 60f41362cf
5 changed files with 26 additions and 15 deletions
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16
manifest
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@ -1,5 +1,5 @@
C Cleanup\sand\scommenting\sof\sthe\snew\sDECIMAL\sextension\scode.\s\sNo\sfunctional\nchanges.
D 2023-06-29T23:03:30.242
C Make\sthe\ssum()\sfunction\sless\sprecise\sand\sslower\sin\sorder\sto\savoid\nharmless\ssigned\sinteger\soverflow\sUBSAN\swarnings\sfrom\sOSS-Fuzz.
D 2023-06-30T11:51:36.400
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@ -590,7 +590,7 @@ F src/delete.c cd5f5cd06ed0b6a882ec1a8c2a0d73b3cecb28479ad19e9931c4706c5e2182be
F src/expr.c 8d1656b65e26af3e34f78e947ac423f0d20c214ed25a67486e433bf16ca6b543
F src/fault.c 460f3e55994363812d9d60844b2a6de88826e007
F src/fkey.c a7fcbf7e66d14dbb73cf49f31489ebf66d0e6006c62b95246924a3bae9f37b36
F src/func.c 8ada46d362a153b8dfb5385c3aaa9a7d75ebf306b33d2e663aa03920126a1bc3
F src/func.c 09a742d1f3363f57b774c227a794f7597d73c3fcfd3a2b430aa99cd718b78d73
F src/global.c bd0892ade7289f6e20bff44c07d06371f2ff9b53cea359e7854b9b72f65adc30
F src/hash.c 9ee4269fb1d6632a6fecfb9479c93a1f29271bddbbaf215dd60420bcb80c7220
F src/hash.h 3340ab6e1d13e725571d7cee6d3e3135f0779a7d8e76a9ce0a85971fa3953c51
@ -705,7 +705,7 @@ F src/trigger.c ad6ab9452715fa9a8075442e15196022275b414b9141b566af8cdb7a1605f2b0
F src/update.c 0aa36561167a7c40d01163238c297297962f31a15a8d742216b3c37cdf25f731
F src/upsert.c 5303dc6c518fa7d4b280ec65170f465c7a70b7ac2b22491598f6d0b4875b3145
F src/utf.c ee39565f0843775cc2c81135751ddd93eceb91a673ea2c57f61c76f288b041a0
F src/util.c a6b41c67ff2a5379b46b77e587b2e0adb2d2ddcc5669691674ca4d28e2755ae4
F src/util.c 9ee7bc23c0f91b48961e2010ef8b666b20ed35ee70418940e7838f63b6403a0e
F src/vacuum.c 604fcdaebe76f3497c855afcbf91b8fa5046b32de3045bab89cc008d68e40104
F src/vdbe.c c993304c609326cf625b4ad30cbb0e15a3f64c941cf2c9713d0c360b4abbaa98
F src/vdbe.h 41485521f68e9437fdb7ec4a90f9d86ab294e9bb8281e33b235915e29122cfc0
@ -1107,7 +1107,7 @@ F test/fts4umlaut.test fcaca4471de7e78c9d1f7e8976e3e8704d7d8ad979d57a739d00f3f75
F test/fts4unicode.test 82a9c16b68ba2f358a856226bb2ee02f81583797bc4744061c54401bf1a0f4c9
F test/fts4upfrom.test f25835162c989dffd5e2ef91ec24c4848cc9973093e2d492d1c7b32afac1b49d
F test/full.test 6b3c8fb43c6beab6b95438c1675374b95fab245d
F test/func.test 14ec60fd0cc4182e285e403b91e916e6c45597786347d9d5e59415cb4b130942
F test/func.test ee6e8c5f74b8e02a873d76ecac7a4116cf61ba908b4ecda6c98b63867d138a1d
F test/func2.test 772d66227e4e6684b86053302e2d74a2500e1e0f
F test/func3.test 600a632c305a88f3946d38f9a51efe145c989b2e13bd2b2a488db47fe76bab6a
F test/func4.test 2285fb5792d593fef442358763f0fd9de806eda47dbc7a5934df57ffdc484c31
@ -2041,8 +2041,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P 8baf8c10aecb261751f2b154356ab224b79d07230929ec9f123791278e601bba
R 675d9c81a919ee8e5fecf85fab690bbe
P 5124481663eb8e74a9f861be98adb7075ea911fcff0216d98c658e955acadf14
R 77794eb101d1ce0bdf15ea60fb4ced31
U drh
Z 280a7e7c456f8f31c265ce2d679ab403
Z b3abc59caff200e4a3d3dc249d24e32e
# Remove this line to create a well-formed Fossil manifest.

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manifest.uuid
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@ -1 +1 @@
5124481663eb8e74a9f861be98adb7075ea911fcff0216d98c658e955acadf14
1be0646a2c352dbf03d2af87fd48b6f9edfd68666790ac6863144ac95f3e0621

7
src/func.c
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@ -1740,8 +1740,13 @@ static void sumFinalize(sqlite3_context *context){
if( p->approx ){
sqlite3_result_double(context, p->rSum[0]+p->rSum[1]);
}else{
i64 v = (i64)p->rSum[0] + (i64)p->rSum[1];
double r = p->rSum[0] + p->rSum[1];
i64 v;
double y[2], z[2];
v = sqlite3RealToI64(p->rSum[0]);
if( sqlite3AddInt64(&v, sqlite3RealToI64(p->rSum[1])) ){
v = 0;
}
sqlite3DDFromInt(v, y);
sqlite3DDSub(y[0], y[1], p->rSum[0], p->rSum[1], z);
if( z[0] + z[1] != 0.0 ){

10
src/util.c
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@ -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 */

6
test/func.test
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@ -910,7 +910,7 @@ if {[working_64bit_int]} {
(SELECT 9223372036854775807 AS x UNION ALL
SELECT -10 AS x);
}
} {0 9223372036854775797}
} {1 {integer overflow}}
do_test func-18.17 {
catchsql {
SELECT sum(x) FROM
@ -1557,8 +1557,8 @@ do_catchsql_test func-37.110 {
SELECT sum(x) FROM c;
} {1 {integer overflow}}
do_catchsql_test func-37.120 {
WITH c(x) AS (VALUES(9223372036854775807),(100),(-101))
WITH c(x) AS (VALUES(9223372036854775807),(10000),(-10010))
SELECT sum(x) FROM c;
} {0 9223372036854775806}
} {1 {integer overflow}}
finish_test