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fix the sanity checking for valid revisions

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This commit is contained in:
Krasimir Angelov
2022-02-02 11:49:16 +01:00
parent f0045e910e
commit 9513c968db
1 changed files with 2 additions and 2 deletions
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4
src/runtime/c/pgf/db.cxx
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@@ -1433,7 +1433,7 @@ ref<PgfPGF> PgfDB::revision2pgf(PgfRevision revision)
throw pgf_error("Invalid revision");
ref<PgfPGF> pgf = revision;
if (chunksize(chunk) != request2size(sizeof(PgfPGF)+pgf->name.size+1))
if (chunksize(chunk) - request2size(sizeof(PgfPGF)+pgf->name.size+1) > MINSIZE)
throw pgf_error("Invalid revision");
return pgf;
@@ -1477,7 +1477,7 @@ ref<PgfConcr> PgfDB::revision2concr(PgfConcrRevision revision)
throw pgf_error("Invalid revision");
ref<PgfConcr> concr = revision;
if (chunksize(chunk) != request2size(sizeof(PgfConcr)+concr->name.size+1))
if (chunksize(chunk) - request2size(sizeof(PgfConcr)+concr->name.size+1) > MINSIZE)
throw pgf_error("Invalid revision");
return concr;