pw_protobuf: Fix out-of-range read

A failed `varint::Read` led to a nested decoder's position to not be
updated when the stream was (partially) advanced. This led to destructor
reading past the end of the stream when `CloseNestedDecoder` was
invoked.

To fix this, `varint::Read` now always returns the number of bytes read
and `StreamDecoder` always updates its position, even on error.

Bug: b/314803709
Change-Id: Id07ea172030ada376d5ce1ce3844e0014edbe4dc
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/188095
Reviewed-by: Armando Montanez <amontanez@google.com>
Commit-Queue: Aaron Green <aarongreen@google.com>
5 files changed
tree: 05b090c61508fb4f062cf58e1fd27745edc6d388
  1. .allstar/
  2. .vscode/
  3. build_overrides/
  4. docker/
  5. docs/
  6. kudzu/
  7. pw_alignment/
  8. pw_allocator/
  9. pw_analog/
  10. pw_android_toolchain/
  11. pw_arduino_build/
  12. pw_assert/
  13. pw_assert_basic/
  14. pw_assert_log/
  15. pw_assert_tokenized/
  16. pw_assert_zephyr/
  17. pw_async/
  18. pw_async2/
  19. pw_async2_basic/
  20. pw_async_basic/
  21. pw_base64/
  22. pw_bloat/
  23. pw_blob_store/
  24. pw_bluetooth/
  25. pw_bluetooth_hci/
  26. pw_bluetooth_profiles/
  27. pw_bluetooth_sapphire/
  28. pw_boot/
  29. pw_boot_cortex_m/
  30. pw_build/
  31. pw_build_info/
  32. pw_build_mcuxpresso/
  33. pw_bytes/
  34. pw_checksum/
  35. pw_chre/
  36. pw_chrono/
  37. pw_chrono_embos/
  38. pw_chrono_freertos/
  39. pw_chrono_rp2040/
  40. pw_chrono_stl/
  41. pw_chrono_threadx/
  42. pw_chrono_zephyr/
  43. pw_cli/
  44. pw_compilation_testing/
  45. pw_console/
  46. pw_containers/
  47. pw_cpu_exception/
  48. pw_cpu_exception_cortex_m/
  49. pw_crypto/
  50. pw_digital_io/
  51. pw_digital_io_mcuxpresso/
  52. pw_digital_io_rp2040/
  53. pw_docgen/
  54. pw_doctor/
  55. pw_emu/
  56. pw_env_setup/
  57. pw_file/
  58. pw_format/
  59. pw_function/
  60. pw_fuzzer/
  61. pw_hdlc/
  62. pw_hex_dump/
  63. pw_i2c/
  64. pw_i2c_linux/
  65. pw_i2c_mcuxpresso/
  66. pw_ide/
  67. pw_interrupt/
  68. pw_interrupt_cortex_m/
  69. pw_interrupt_xtensa/
  70. pw_interrupt_zephyr/
  71. pw_intrusive_ptr/
  72. pw_kvs/
  73. pw_libc/
  74. pw_libcxx/
  75. pw_log/
  76. pw_log_android/
  77. pw_log_basic/
  78. pw_log_null/
  79. pw_log_rpc/
  80. pw_log_string/
  81. pw_log_tokenized/
  82. pw_log_zephyr/
  83. pw_malloc/
  84. pw_malloc_freelist/
  85. pw_malloc_freertos/
  86. pw_metric/
  87. pw_minimal_cpp_stdlib/
  88. pw_module/
  89. pw_multibuf/
  90. pw_multisink/
  91. pw_package/
  92. pw_perf_test/
  93. pw_persistent_ram/
  94. pw_polyfill/
  95. pw_preprocessor/
  96. pw_presubmit/
  97. pw_protobuf/
  98. pw_protobuf_compiler/
  99. pw_random/
  100. pw_result/
  101. pw_ring_buffer/
  102. pw_router/
  103. pw_rpc/
  104. pw_rpc_transport/
  105. pw_rust/
  106. pw_snapshot/
  107. pw_software_update/
  108. pw_span/
  109. pw_spi/
  110. pw_spi_mcuxpresso/
  111. pw_status/
  112. pw_stm32cube_build/
  113. pw_stream/
  114. pw_stream_shmem_mcuxpresso/
  115. pw_stream_uart_linux/
  116. pw_stream_uart_mcuxpresso/
  117. pw_string/
  118. pw_symbolizer/
  119. pw_sync/
  120. pw_sync_baremetal/
  121. pw_sync_embos/
  122. pw_sync_freertos/
  123. pw_sync_stl/
  124. pw_sync_threadx/
  125. pw_sync_zephyr/
  126. pw_sys_io/
  127. pw_sys_io_ambiq_sdk/
  128. pw_sys_io_arduino/
  129. pw_sys_io_baremetal_lm3s6965evb/
  130. pw_sys_io_baremetal_stm32f429/
  131. pw_sys_io_emcraft_sf2/
  132. pw_sys_io_mcuxpresso/
  133. pw_sys_io_rp2040/
  134. pw_sys_io_stdio/
  135. pw_sys_io_stm32cube/
  136. pw_sys_io_zephyr/
  137. pw_system/
  138. pw_target_runner/
  139. pw_thread/
  140. pw_thread_embos/
  141. pw_thread_freertos/
  142. pw_thread_stl/
  143. pw_thread_threadx/
  144. pw_thread_zephyr/
  145. pw_tls_client/
  146. pw_tls_client_boringssl/
  147. pw_tls_client_mbedtls/
  148. pw_tokenizer/
  149. pw_tool/
  150. pw_toolchain/
  151. pw_toolchain_bazel/
  152. pw_trace/
  153. pw_trace_tokenized/
  154. pw_transfer/
  155. pw_unit_test/
  156. pw_unit_test_zephyr/
  157. pw_varint/
  158. pw_watch/
  159. pw_web/
  160. pw_work_queue/
  161. seed/
  162. targets/
  163. third_party/
  164. ts/
  165. zephyr/
  166. .bazelignore
  167. .bazelrc
  168. .black.toml
  169. .clang-format
  170. .clang-tidy
  171. .eslintrc.cjs
  172. .git-blame-ignore-revs
  173. .gitattributes
  174. .gitignore
  175. .gn
  176. .mypy.ini
  177. .prettierignore
  178. .prettierrc.cjs
  179. .pw_ide.yaml
  180. .pylintrc
  181. activate.bat
  182. Android.bp
  183. AUTHORS
  184. bootstrap.bat
  185. bootstrap.sh
  186. BUILD.bazel
  187. BUILD.gn
  188. BUILDCONFIG.gn
  189. CMakeLists.txt
  190. jest.config.ts
  191. Kconfig.zephyr
  192. LICENSE
  193. modules.gni
  194. OWNERS
  195. package-lock.json
  196. package.json
  197. pigweed.json
  198. PIGWEED_MODULES
  199. README.md
  200. rollup.config.js
  201. tsconfig.json
  202. WORKSPACE
README.md

Pigweed

Pigweed is an open source collection of embedded-targeted libraries–or as we like to call them, modules. These modules are building blocks and infrastructure that enable faster and more reliable development on small-footprint MMU-less 32-bit microcontrollers like the STMicroelectronics STM32L452 or the Nordic nRF52832.

For more information please see our website: https://pigweed.dev/.

Links