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Fix an assert() in pager.c to avoid the possibility of side-effects.

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FossilOrigin-Name: 1d1fe03c752267f03f015ada975876f65e2a7b967e19f057b5c73f95d7df8a9c
This commit is contained in:
dan 2022-01-01 20:02:58 +00:00
parent a6ca90c38c
commit 4ce289d088
3 changed files with 18 additions and 11 deletions

14
manifest

@ -1,5 +1,5 @@
C Attempt\sto\sfix\sa\sharmless\scompiler\swarning\sin\sFTS5.
D 2022-01-01T19:55:29.471
C Fix\san\sassert()\sin\spager.c\sto\savoid\sthe\spossibility\sof\sside-effects.
D 2022-01-01T20:02:58.185
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
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F src/os_win.h 7b073010f1451abe501be30d12f6bc599824944a
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F src/pager.c dda556cb412e66c3d4016214ef2dd63d9019ad24d1ceff871b79dcb860981f77
F src/pager.h 4bf9b3213a4b2bebbced5eaa8b219cf25d4a82f385d093cd64b7e93e5285f66f
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F src/pcache.c 084e638432c610f95aea72b8509f0845d2791293f39d1b82f0c0a7e089c3bb6b
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# Remove this line to create a well-formed Fossil manifest.

2
manifest.uuid

@ -1 +1 @@
8e619c21e2326be1538b60908e7cd211558ec840835c6eb69e768eb190e1fd0b
1d1fe03c752267f03f015ada975876f65e2a7b967e19f057b5c73f95d7df8a9c

13
src/pager.c

@ -3900,8 +3900,7 @@ static int pager_wait_on_lock(Pager *pPager, int locktype){
** current database image, in pages, OR
**
** b) if the page content were written at this time, it would not
** be necessary to write the current content out to the sub-journal
** (as determined by function subjRequiresPage()).
** be necessary to write the current content out to the sub-journal.
**
** If the condition asserted by this function were not true, and the
** dirty page were to be discarded from the cache via the pagerStress()
@ -3916,8 +3915,16 @@ static int pager_wait_on_lock(Pager *pPager, int locktype){
*/
#if defined(SQLITE_DEBUG)
static void assertTruncateConstraintCb(PgHdr *pPg){
Pager *pPager = pPg->pPager;
assert( pPg->flags&PGHDR_DIRTY );
assert( pPg->pgno<=pPg->pPager->dbSize || !subjRequiresPage(pPg) );
if( pPg->pgno>pPager->dbSize ){ /* if (a) is false */
Pgno pgno = pPg->pgno;
int i;
for(i=0; i<pPg->pPager->nSavepoint; i++){
PagerSavepoint *p = &pPager->aSavepoint[i];
assert( p->nOrig<pgno || sqlite3BitvecTestNotNull(p->pInSavepoint,pgno) );
}
}
}
static void assertTruncateConstraint(Pager *pPager){
sqlite3PcacheIterateDirty(pPager->pPCache, assertTruncateConstraintCb);