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support/Archivable: Reset errno in validate_instantiation()

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validate_instantiation(BMessage*, const char*) sets errno for invalid
input, or if the requested class is not found, but it doesn't reset
errno to B_OK if validation succeeds.

I verified that in BeOS R5, errno is set to B_OK if
validate_instantiation succeeds.

This fixes BHandler::Instantiate2 and BHandler::Instantiate3 tests.

Change-Id: I531777e6ba47e9635da2da1fc8c8103bb233b0f3
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2136
Reviewed-by: Axel Dörfler <[email protected]>
Reviewed-by: Adrien Destugues <[email protected]>
This commit is contained in:
Kyle Ambroff-Kao
2020-01-21 08:46:20 +00:00
committed by Adrien Destugues
parent 58bf3f3628
commit 7037b5d9bc
1 changed files with 3 additions and 1 deletions
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src/kits/support/Archivable.cpp
+3 -1
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@@ -762,8 +762,10 @@ validate_instantiation(BMessage* from, const char* className)
const char* archiveClassName;
for (int32 index = 0; from->FindString(B_CLASS_FIELD, index,
&archiveClassName) == B_OK; ++index) {
if (name == archiveClassName)
if (name == archiveClassName) {
errno = B_OK;
return true;
}
}
if (!add_private_namespace(name))