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The line directives have the form `#line <path> <number>`, and do not
have the line number before the path as other compilers do.
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We read sources in binary format, so we need to explicitly match CR
(`\r`) characters that occur as part of newlines in CRLF sources.
This is particularly important when line continuation (`&`) occurs
in the middle of module declaration or usage.
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Suppress one in code generated by flex.
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clang scan-build warns about YY_CURRENT_BUFFER_LVALUE being zero-
allocated, but the whole point of the macro is to know that it's
not zero. Wrap the entire file in an "#ifndef __clang_analyzer__"
block in order to suppress the warning.
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The lexical token expression added by commit v3.7.0-rc1~73^2~1 (Fortran:
Add support for submodule syntax in dependency scanning, 2016-09-05)
has a typo and does not match upper-case `B` in `SUBMODULE`. Fix it.
Fixes: #18595
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flex 2.6.3 introduces symbol remapping through macro definitions. hence the
change appears bigger than one would expect from a minor version upgrade.
In addition some manual cleanup that had to be done previously is now
obsolete. namely:
- the size_t cast of _yybytes_len in yy_scan_bytes
(i is now also defined int and not size_t anymore)
- the redefinition of yyl within yy_find_action
(yyl is now already defined as int)
Line number preprocessor directives (#line) were previously generated into
the c source file. This actually breaks debugging as debuggers have a hard
time finding the original cmFortranLexer.in.l and mapping the current
instruction to a meaningful location within that file.
The prefix "cmFortran_yy" can already be set as %option directly.
For convenience also provide a sed command for all the manual steps that
need to be done after generating.
Signed-off-by: Matthias Maennich <matthias@maennich.net>
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