Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 40 bytes) on line 1683 - Problems when processing large files

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What steps will reproduce the problem?
1.If you give as an input a very big Excel file.

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Original issue reported on code.google.com by `anv...@gmail.com` on 4 Nov 2010 at 4:12

Reproduce the failure with a very large Excel file, then inspect the code at line 1683 to identify the memory-intensive operation. The issue names no source file or test, so first locate that line and establish how large-file processing is expected to complete. Done means the file processes without exceeding the reported memory limit.

Written by the indexing model from the issue text.