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Correct wasm heap corruption introduced in test code added in [e144fd5c88fa4] which led to unpredictable failures.

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FossilOrigin-Name: 6c1e07e3857b38e394853891a9028e88319bad4bc7b7b15078e25f430c3b1222
This commit is contained in:
stephan
2022-12-10 17:20:29 +00:00
parent 8c0041f5bf
commit 130cd85026
3 changed files with 12 additions and 13 deletions
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11
ext/wasm/tester1.c-pp.js
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@@ -1066,7 +1066,7 @@ self.sqlite3InitModule = sqlite3InitModule;
T.assert(0 === rc);
const stack = wasm.pstack.pointer;
try {
const [pCur, pHi] = wasm.pstack.allocPtr(2);
const [pCur, pHi] = wasm.pstack.allocChunks(2,8);
rc = capi.sqlite3_db_status(this.db, capi.SQLITE_DBSTATUS_LOOKASIDE_USED,
pCur, pHi, 0);
T.assert(0===rc);
@@ -1078,19 +1078,18 @@ self.sqlite3InitModule = sqlite3InitModule;
0, 4096, 12);
T.assert(0 === rc);
}
wasm.pokePtr([pCur, pHi], 0);
let [vCur, vHi] = wasm.peekPtr(pCur, pHi);
wasm.poke([pCur, pHi], 0, 'i32');
let [vCur, vHi] = wasm.peek([pCur, pHi], 'i32');
T.assert(0===vCur).assert(0===vHi);
rc = capi.sqlite3_status(capi.SQLITE_STATUS_MEMORY_USED,
pCur, pHi, 0);
[vCur, vHi] = wasm.peekPtr([pCur, pHi]);
[vCur, vHi] = wasm.peek([pCur, pHi], 'i32');
//console.warn("i32 vCur,vHi",vCur,vHi);
T.assert(0 === rc).assert(vCur > 0).assert(vHi >= vCur);
if(wasm.bigIntEnabled){
// Again in 64-bit. Recall that pCur and pHi are allocated
// large enough to account for this re-use.
wasm.pokePtr([pCur, pHi], 0)
.poke([vCur, vHi], 0, 'i64');
wasm.poke([pCur, pHi], 0, 'i64');
rc = capi.sqlite3_status64(capi.SQLITE_STATUS_MEMORY_USED,
pCur, pHi, 0);
[vCur, vHi] = wasm.peek([pCur, pHi], 'i64');