Fix memory corruption in C++ demangler

The __cxa_demangle_gnu3() and cpp_demangle_gnu3() functions segfault on
various libcxxabi test cases due to a copy and paste error. This change
fixes that.

Th

Fix memory corruption in C++ demangler

The __cxa_demangle_gnu3() and cpp_demangle_gnu3() functions segfault on
various libcxxabi test cases due to a copy and paste error. This change
fixes that.

This is a subset of https://github.com/libcxxrt/libcxxrt/pull/34 which
fixes the immediate problem.

Reviewed by: imp, emaste (I think)
Pull Request: https://github.com/freebsd/freebsd-src/pull/1222

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Merge elftoolchain r3877 (by jkoshy):

Incorporate fixes from Dimitry Andric:

- Use a BUFFER_GROW() macro to avoid rounding errors in capacity
calculations.
- Fix a bug introduced in [r353

Merge elftoolchain r3877 (by jkoshy):

Incorporate fixes from Dimitry Andric:

- Use a BUFFER_GROW() macro to avoid rounding errors in capacity
calculations.
- Fix a bug introduced in [r3531].
- Fix handling of nested template parameters.

Ticket: #581

This should fix a number of assertions on elftoolchain's cxxfilt, and
allow it to correctly demangle several names that it could not handle
before.

Obtained from: https://sourceforge.net/p/elftoolchain/code/3877/
PR: 250702
MFC after: 3 days

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libelftc: Fix a memory leak in cpp_demangle_read_type().

CID: 1305425
MFC after: 1 week
Sponsored by: The FreeBSD Foundation

Merge ^/head r357408 through r357661.

libelftc: Add a missing check for an error from vector_str_init().

While here consistently use the same spelling for such checks.

CID: 1376769
MFC after: 1 week
Sponsored by: The FreeBSD Foundation

Update ELF Tool Chain to r3614

MFC after: 1 week
Relnotes: Yes
Sponsored by: The FreeBSD Foundation

MFhead@r320180

Merge ^/head r319973 through 321382.

Merge ^/head r320042 through r320397.

Update to ELF Tool Chain snapshot at r3561

This update is primarily bug fixes in C++ symbol demangling, including:

- rvalue reference
- builtin type auto and decltype(auto)
- revamped support for f

Update to ELF Tool Chain snapshot at r3561

This update is primarily bug fixes in C++ symbol demangling, including:

- rvalue reference
- builtin type auto and decltype(auto)
- revamped support for function return types
- formatting fixes
- omit void when its the only param
- ref-qualifiers and others in function types
- type qualifiers in pointer-to-member function types
- incorrect handling regarding CV-qualifiers in function types
- ref-qualifier found in nested-name
- properly handle <name> ::= <substitute><template-args>
- make sure that nested function name is not a substitute candidate
- correctly handle expression in template args
- skip unknown substitution abbreviations

MFC after: 4 days

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Merge ^/head r316992 through r317215.

Update ELF Tool Chain to upstream r3520

Highlights of changes between r3490 and r3520:

- Improve C++ demangling
- Improve compatibility with Binutils tools wrt. error messages
- Handle additional t

Update ELF Tool Chain to upstream r3520

Highlights of changes between r3490 and r3520:

- Improve C++ demangling
- Improve compatibility with Binutils tools wrt. error messages
- Handle additional types/sections/etc. in readelf and elfdump
- addr2line, cxxfilt: use setvbuf to set line buffering for filter use

PR: 218395
MFC after: 2 weeks
Relnotes: Yes
Sponsored by: The FreeBSD Foundation

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Merge ^/head r305087 through r305219.

MFhead @ r305170

Update to ELF Tool Chain r3490

Improvements include:
* readelf: report all relocation types in rel/rela for MIPS N64
* readelf: add ELFOSABI_ARM_AEABI
* elfdump: add ELFOSABI_ARM_AEABI and ELFOSA

Update to ELF Tool Chain r3490

Improvements include:
* readelf: report all relocation types in rel/rela for MIPS N64
* readelf: add ELFOSABI_ARM_AEABI
* elfdump: add ELFOSABI_ARM_AEABI and ELFOSABI_ARM
* Add recent RISC-V relocations
* elfcopy: use elftc_timestamp, to support SOURCE_DATE_EPOCH

Sponsored by: The FreeBSD Foundation

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Merge ^/head r303250 through r304235.

libelftc: fix demangling of wchar_t

"wchar_t" is 7 characters long, not 6.

PR: 208661
Submitted by: Daniel McRobb
Obtained from: ELF Tool Chain r3480
MFC after: 3 days

Update to ELF Tool Chain r3475

Improvements include:

* Add support for reporting and handling a number of new constants in
various tools, including:
* CloudABI OSABI
* DT_TLSDESC_*

Update to ELF Tool Chain r3475

Improvements include:

* Add support for reporting and handling a number of new constants in
various tools, including:
* CloudABI OSABI
* DT_TLSDESC_*
* i386, MIPS, SPARC and amd64 relocations

* C++ demangler bug fixes

* Man page updates

* Improved input validation in several tools

This update also reduces diffs against upstream as a number of fixes
included in upstream were previously cherry-picked into FreeBSD.

Sponsored by: The FreeBSD Foundation

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MFH

Sponsored by: The FreeBSD Foundation

Merge ^/head r295544 through r295600.

Update ELF Tool Chain to upstream rev 3400

Some notable improvements include:

readelf:
- Add AArch64 relocation definitions.
- Report value of unknown relocation types.

elfcopy:
- Consider symbols

Update ELF Tool Chain to upstream rev 3400

Some notable improvements include:

readelf:
- Add AArch64 relocation definitions.
- Report value of unknown relocation types.

elfcopy:
- Consider symbols with STB_GNU_UNIQUE binding as global symbols.
- Fixed support for VMA adjustment for loadable sections found
in relocatable objects.
- Handle nameless global symbols.
- Improve wildcard matching for !-prefixed symbols.
- Add PE/COFF support.

elfdump:
- Improve section type reporting.
- Add MIPS-specific section types.

This update also includes a significant number of bug fixes.

PR: 207091 [exp-run]
Sponsored by: The FreeBSD Foundation

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Catch up with HEAD (r280229-r284686).

Merge ^/head r283596 through r283770.

MFH: r282615-r283655

Sponsored by: The FreeBSD Foundation

Update to ELF Tool Chain r3223

Highlights (upstream revisions):
- Fix SHT_GROUP handling in elfcopy/strip (3206 3220 3221)
- Misc elfcopy / strip bug fixes (3215 3216 3217)
- Many C++ demangler i

Update to ELF Tool Chain r3223

Highlights (upstream revisions):
- Fix SHT_GROUP handling in elfcopy/strip (3206 3220 3221)
- Misc elfcopy / strip bug fixes (3215 3216 3217)
- Many C++ demangler improvements (3199 3200 3201 3202 3203 3204 3205
3208 3210 3211 3212)
- Improve GNU binutils compatibility in elfcopy / strip (3213 3214)
- Add -g option to readelf(1): dump contents of section groups (3219)
- Add EM_IAMCU 32-bit Intel MCU (3198)

Also add a compat #define for building with older FreeBSD ELF headers.
The GRP_COMDAT flag was added to elf_common.h in r283110, but it's not
available during the bootstrap build. It is also convenient to be able
to build on older hosts.

Thanks to antoine@ for tracking down issues through multiple exp-runs
and to kaiw@ for fixing.

PR: 198611 (exp-run), 200350
Sponsored by: The FreeBSD Foundation

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