mirror of https://github.com/odrling/Aegisub
Fix crash in PCM audio provider when using files larger than the mapping size (256 MB on 32 bit). The length of mappings closer than mapping-size to the end of the file, when the file was larger, would not be adjusted to not cross the end of file.
Originally committed to SVN as r2810.
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@ -178,7 +178,7 @@ char * PCMAudioProvider::EnsureRangeAccessible(int64_t range_start, int64_t rang
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mapping_length = range_length;
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}
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// But also make sure we don't try to make a mapping larger than the file
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if ((int64_t)mapping_length > file_size)
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if (mapping_start + (int64_t)mapping_length > file_size)
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mapping_length = (size_t)(file_size - mapping_start);
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// We already checked that the requested range doesn't extend over the end of the file
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// Hopefully this should ensure that small files are always mapped in their entirety
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