* PR 14400--PCH problem with large files
@ 2004-03-27 19:38 Ian Lance Taylor
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From: Ian Lance Taylor @ 2004-03-27 19:38 UTC (permalink / raw)
To: geoffk; +Cc: gcc
Geoff, could you take a look at PR 14400? It is a PCH problem which
arises with large files. Basically, gcc currently reads the entire
source file into memory before it loads any PCH (in read_file_guts()
called eventually by cpp_read_main_file()). I think this means that
on a system for which PCH requires that mmap generally return the same
address--i.e., any non-Darwin system--PCH will fail for a sufficiently
large source file.
I'm a bit tired, so I may be missing something. If not, I think we
should add a test to the PCH testsuite which tries to compile a large
file. I'm not sure what a good fix would be.
Ian
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2004-03-27 19:38 PR 14400--PCH problem with large files Ian Lance Taylor
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