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AK+LibGfx+LibJS: Pass -1 as the file descriptor to anonymous mmap

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Serenity/Linux/macOS ignore the file descriptor when an anonymous
mapping is requested. However, BSDs require the fd to be -1.
This commit is contained in:
Daniel Bertalan
2022-07-10 15:30:08 +02:00
committed by Andreas Kling
parent 4bed2ef66b
commit 42e22f89a4
3 changed files with 3 additions and 3 deletions
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2
Userland/Libraries/LibJS/Bytecode/BasicBlock.cpp
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@@ -23,7 +23,7 @@ BasicBlock::BasicBlock(String name, size_t size)
// The main issue we're working around here is that we don't want pointers into the bytecode stream to become invalidated
// during code generation due to dynamic buffer resizing. Otherwise we could just use a Vector.
m_buffer_capacity = size;
m_buffer = (u8*)mmap(nullptr, m_buffer_capacity, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
m_buffer = (u8*)mmap(nullptr, m_buffer_capacity, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
VERIFY(m_buffer != MAP_FAILED);
}