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2145. By Ivan Penkov <email address hidden> on 2023-09-06

The ARM64 stack walker was doing an illegal down cast from base-class (StackFrame) to derived-class (StackFrameARM64).

Inline frames are always of the base-class type (StackFrame). Treating them as derived-class and accessing members is causing buffer overflows.

Change-Id: Ib41b74256e6162e7d2b14ca3905dfaf5591b9c86
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/4847317
Reviewed-by: Joshua Peraza <email address hidden>

2144. By Ivan Penkov <email address hidden> on 2023-08-24

Fix -Wunguarded-availability warnings.

Change-Id: I400130d67acea47158b9ba4f5703c7e9bc2cbb79
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/4811217
Reviewed-by: Joshua Peraza <email address hidden>

2143. By Petr Hosek <email address hidden> on 2023-08-06

Update scripts to Python 3

Python 2 is deprecated and have now been removed from CI builders.

Change-Id: Ic838714502e16136bd8ed345a47a00b71ff889aa
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/4754416
Reviewed-by: Mike Frysinger <email address hidden>

2142. By Peter Collingbourne on 2023-08-02

Add support for new SEGV_* constants to minidump_stackwalk.

Bug: chromium:1137393
Change-Id: I1a6a5f2013e6a08e189958b89415183ffb6fe345
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/4722972
Reviewed-by: Mark Mentovai <email address hidden>

2141. By Marc Gonzalez <email address hidden> on 2023-08-02

linux_dumper: Always map ELF file from offset 0

Functions such as FindElfSection and FindElfSegments that inspect
the ELF header expect a pointer to the first byte of the file.
IsValidElf() checks for the ELF magic number at offset 0.
Thus, we must map ELF object files from offset 0.

Change-Id: Icebfb46229a04019f57a7ec07844257b98ceb278
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/4674337
Reviewed-by: Mike Frysinger <email address hidden>

2140. By Marc Gonzalez <email address hidden> on 2023-08-02

libdisasm: Widen STRNCATF temp buffer

The _tmp buffer used in STRNCATF is too small for several callers,
which might lead to truncated output in some situations.

For example, GCC 11 warns:

src/third_party/libdisasm/x86_format.c:899:40: warning: ‘%s’ directive output may be truncated writing up to 63 bytes into a region of size 32 [-Wformat-truncation=]
  899 | STRNCATF( buf, "%s:", str, len );
      | ^~~~~ ~~~
src/third_party/libdisasm/x86_format.c:34:38: note: in definition of macro ‘STRNCATF’
   34 | snprintf( _tmp, sizeof _tmp, fmt, data ); \
      | ^~~
src/third_party/libdisasm/x86_format.c:899:41: note: format string is defined here
  899 | STRNCATF( buf, "%s:", str, len );
      | ^~
In file included from /usr/include/stdio.h:894,
                 from src/third_party/libdisasm/x86_format.c:1:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:71:10: note: ‘__builtin___snprintf_chk’ output between 2 and 65 bytes into a destination of size 32
   71 | return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   72 | __glibc_objsize (__s), __fmt,
      | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   73 | __va_arg_pack ());
      | ~~~~~~~~~~~~~~~~~

Change-Id: Ia876e288bf9629f2c72db3faf2287c7940924ea0
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/4668735
Reviewed-by: Mike Frysinger <email address hidden>

2139. By Ian McKellar <email address hidden> on 2023-07-27

Add support for zstd compressed sections to dump_syms

Support for zstd must be enabled by passing --enable-zstd to configure.

Change-Id: I57d0196552284de86575d979d673ac20a3fc4d64
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/4722191
Reviewed-by: Joshua Peraza <email address hidden>

2138. By Marc Gonzalez <email address hidden> on 2023-07-06

Fix warnings in configure.ac

Fix warnings on Ubuntu 22.04

Change-Id: I2f64988706e72838b4e2cec50d0bde9eb90929ad
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/4668734
Reviewed-by: Mike Frysinger <email address hidden>

2137. By Zequan Wu <email address hidden> on 2023-06-01

Fix bug when ranges_data is index 0 in DW_AT_ranges.

Bug: chromium:1448979
Change-Id: Ib174ab1592d189e0f05e6baa6a96af2742d00eda
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/4580929
Reviewed-by: Joshua Peraza <email address hidden>

2136. By Zequan Wu <email address hidden> on 2023-05-31

Share .debug_line and .debug_line_str among dwp file and main binary file.

The debug info in the dwp file needs to refer to the .debug_line and
.debug_line_str sections in the main binary.

This fixes dump_syms not generating LINE records for dwp in split dwarf.

Bug: chromium:1448979
Change-Id: I71923f12cea72caae081c1406e2cbca55e95859e
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/4576346
Reviewed-by: Joshua Peraza <email address hidden>