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Issue #3049 - Undo Stylo nonsense that breaks body and frame margins.

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This restores support for using HTML tag styling of margins on the body.
Reftests post bug still pass for dynamic changes, so does the newly-added
test for body margins and frames that tests the old styling method.
This also removes the reftest list for stylo testing for obvious reasons.
This commit is contained in:
Moonchild 2022-01-07 20:09:13 +00:00 • committed by roytam1
commit 0f56697eb9
15 changed files with 283 additions and 171 deletions
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12
dom/base/nsMappedAttributes.cpp
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@ -61,17 +61,11 @@ nsMappedAttributes::Clone(bool aWillAddAttr)
void* nsMappedAttributes::operator new(size_t aSize, uint32_t aAttrCount) CPP_THROW_NEW
{
size_t size = aSize + aAttrCount * sizeof(InternalAttr);
NS_ASSERTION(aAttrCount > 0, "zero-attribute nsMappedAttributes requested");
// aSize will include the mAttrs buffer so subtract that.
// We don't want to under-allocate, however, so do not subtract
// if we have zero attributes. The zero attribute case only happens
// for <body>'s mapped attributes
if (aAttrCount != 0) {
size -= sizeof(void*[1]);
}
void* newAttrs = ::operator new(size);
void* newAttrs = ::operator new(aSize - sizeof(void*[1]) +
aAttrCount * sizeof(InternalAttr));
#ifdef DEBUG
static_cast<nsMappedAttributes*>(newAttrs)->mBufferSize = aAttrCount;