clang_nowarn_sim_attr_printf

Clang: Suppress warnings if built with Clang (sim: printf-like functions)

• Status: Merged for GDB 13 but another patchset is required to fix new bugs
• Branch: clang-nowarn-sim-attr-printf
• Tracking PR: #60 (view Pull Request and Diff)
• Mailing List:
  • PATCH v1 (2022-09-25)
  • PATCH v2 (2022-10-06)

Based On

• Clang: Suppress warnings if built with Clang (sim)
  PATCH v2 of that moved PATCH v1 1/4 to this patchset.

Issue Solved

Clang generates a warning if the format string of a printf-like function is not a literal (-Wformat-nonliteral). On the default configuration, it causes a build failure (unless --disable-werror is specified).

To avoid warnings on the printf-like wrapper, it requires proper __attribute__((format)) and we have ATTRIBUTE_PRINTF macro for this reason.

This patchset adds ATTRIBUTE_PRINTF to all function declarations that require ATTRIBUTE_PRINTF macro.