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GCC 8 warns about some of the conversions in bison-generated code.
Suppress the warnings.
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Prior to commit 7c4c13ffef (math: Reject unexpected expression input
explicitly, 2018-05-18) we ignored unexpected characters in an
expression that otherwise can be parsed. In order to preserve
compatibility with projects that accidentally used this, convert the
error to a warning.
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5dbee9d2d0 math: Add options to calculate and format output as hexadecimal
8661e7052c math: Diagnose divide-by-zero
7c4c13ffef math: Reject unexpected expression input explicitly
5b0f73a15a math: Use 64-bit integer type for computation
963b8d9f6c math: Add RunCMake.math test to prepare for error cases
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !2056
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Switch to C++ exceptions for lexer/parser error handling.
Teach the lexer/parser to fail on unexpected input.
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Extend the fix from commit v3.10.0-rc1~188^2 (ListFileLexer: fix
heap-buffer-overflow on malicious input, 2017-08-26) to apply to all
lexer token matches. Replace all `.` with `[^\0\n]`. Update all
`[^...]` match expressions to not match `\0`.
We cannot safely process null bytes in strings.
Fixes: #18124
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Since commit v3.7.0-rc1~73^2~1 (Fortran: Add support for submodule
syntax in dependency scanning, 2016-09-05) we support parsing Fortran
sources that use submodule syntax, but it left addition of `.smod`
dependencies to future work. Add it now.
The syntax
submodule (module_name) submodule_name
means the current source requires `module_name.mod` and provides
`module_name@submodule_name.smod`. The syntax
submodule (module_name:submodule_name) nested_submodule_name
means the current source requires `module_name@submodule_name.smod`
provides `module_name@nested_submodule_name.smod`.
Fixes: #17017
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Make them local constants in the lexer file.
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In case a list file contains a null terminated string that is continued
until a later space, the lexer token information got inconsistent:
e.g. an argument "TEST\0FOOBAR" is passed by the lexer as a token
char* = "TEST\0FOOBAR" and length 11
^^ note: ascii 0x00
Using strdup in cmListFileLexer leads lexer->token.text to be allocated
with size 5 and lexer->token.length to be set to 11
A subsequent call to this function with an argument of 5 < length <= 11
wrongly assumed a sufficiently sized buffer and therefore corrupted the
heap buffer. The program might crash due to this corruption.
The case "NullTerminatedArgument" is intentionally using a quite large
'rest' to increase the chance to actually hit the issue. It will reliably
crash with address sanitizer enabled though.
This fix addresses all rules where arbitrary characters are matched to
ignore \0 in order to fall through to the rule that matches an arbitrary
character as BadCharacter.
Signed-off-by: Matthias Maennich <matthias@maennich.net>
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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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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 cmExprLexer.in.l and mapping the current
instruction to a meaningful location within that file.
The prefix "cmExpr_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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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 cmDependsJavaLexer.in.l and mapping the current
instruction to a meaningful location within that file.
The prefix "cmDependsJava_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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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 cmCommandArgumentLexer.in.l and mapping the current
instruction to a meaningful location within that file.
The prefix "cmCommandArgument_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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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 cmListFileLexer.in.l and mapping the current
instruction to a meaningful location within that file.
The prefix "cmListFileLexer_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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The commit v3.9.0-rc1~502^2 (cmListFileLexer: bail out on seek-errors,
2017-02-19) for bug # 16607 was only applied to the generated file.
Also apply the fix now to the original.
Signed-off-by: Matthias Maennich <matthias@maennich.net>
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