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patterns/ani: Improved compatibility with error size defined in ani files #354

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patterns/ani: Improved compatibility with error size defined in ani files #354

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7 changes: 6 additions & 1 deletion patterns/ani.hexpat
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Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,12 @@ struct RiffChunk {
u32 size;
if (signature == "RIFF" || signature == "LIST") {
char type[4];
RiffChunk chunks[while($ - addressof(type) < size)];

// Compatible with error size defined in ani files
u32 remain = sizeof($) - addressof(type);
u32 marked = size > remain ? remain : size;

RiffChunk chunks[while($ - addressof(type) < marked)];
} else if (signature[0] == 'I' && parent.type == "INFO") {
char info[size];
} else if (signature == "anih") {
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Binary file added tests/patterns/test_data/ani.compatibility.hexpat.ani
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