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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.

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Originally committed to SVN as r2810.
This commit is contained in:
Niels Martin Hansen 2009-04-17 16:34:06 +00:00
parent 49e3895180
commit 7a19b273b1
1 changed files with 1 additions and 1 deletions
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aegisub/src/audio_provider_pcm.cpp
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@ -178,7 +178,7 @@ char * PCMAudioProvider::EnsureRangeAccessible(int64_t range_start, int64_t rang
mapping_length = range_length;
}
// But also make sure we don't try to make a mapping larger than the file
if ((int64_t)mapping_length > file_size)
if (mapping_start + (int64_t)mapping_length > file_size)
mapping_length = (size_t)(file_size - mapping_start);
// We already checked that the requested range doesn't extend over the end of the file
// Hopefully this should ensure that small files are always mapped in their entirety