From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2209) id 1A7B73896C1C; Fri, 22 Jan 2021 20:44:44 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 1A7B73896C1C To: gcc-cvs-wwwdocs@gcc.gnu.org Subject: gcc-wwwdocs branch master updated. 2b7df0f0b68cb1cf89b4718f502d56263df983c1 X-Git-Refname: refs/heads/master X-Git-Reftype: branch X-Git-Oldrev: 62ddd954b0d9d4f607e3a0301658fca788a9a3df X-Git-Newrev: 2b7df0f0b68cb1cf89b4718f502d56263df983c1 Message-Id: <20210122204444.1A7B73896C1C@sourceware.org> Date: Fri, 22 Jan 2021 20:44:44 +0000 (GMT) From: David Malcolm X-BeenThere: gcc-cvs-wwwdocs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-cvs-wwwdocs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Jan 2021 20:44:44 -0000 This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "gcc-wwwdocs". The branch, master has been updated via 2b7df0f0b68cb1cf89b4718f502d56263df983c1 (commit) via f99f00f912a75f569895421ab83e396fb0533f6d (commit) via 2bbf1bf467ec27e6bda8c40a7af5d09e46b33621 (commit) via fc028704c31916bcc7bee24ebdc7eadd79edf494 (commit) via ca033a4f79618381432533ee392b90fa4798c4ee (commit) via c1f912276b003b5c8233172d25d008f466ed20df (commit) from 62ddd954b0d9d4f607e3a0301658fca788a9a3df (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit 2b7df0f0b68cb1cf89b4718f502d56263df983c1 Author: David Malcolm Date: Fri Jan 22 15:38:40 2021 -0500 gcc 11: add documentation link for -Wsizeof-array-div diff --git a/htdocs/gcc-11/changes.html b/htdocs/gcc-11/changes.html index ba09587d..08a4c93a 100644 --- a/htdocs/gcc-11/changes.html +++ b/htdocs/gcc-11/changes.html @@ -184,7 +184,8 @@ a work-in-progress.

  • New warnings:
  • The analyzer has gained warnings - -Wanalyzer-shift-count-negative, - -Wanalyzer-shift-count-overflow, - -Wanalyzer-write-to-const, and - -Wanalyzer-write-to-string-literal, + -Wanalyzer-shift-count-negative, + -Wanalyzer-shift-count-overflow, + -Wanalyzer-write-to-const, and + -Wanalyzer-write-to-string-literal, all enabled by default when - -fanalyzer + -fanalyzer is enabled.
  • The analyzer can now be extended by GCC plugins, allowing for @@ -553,8 +553,8 @@ a work-in-progress.

    GCC plugin to check for misuses of CPython's global interpreter lock can be seen in the test suite
  • The analyzer has gained new debugging options - -fdump-analyzer-json and - -fno-analyzer-feasibility. + -fdump-analyzer-json and + -fno-analyzer-feasibility.
    • @@ -567,7 +567,7 @@ a work-in-progress.

    • GCC has gained a new environment variable - GCC_EXTRA_DIAGNOSTIC_OUTPUT + GCC_EXTRA_DIAGNOSTIC_OUTPUT which can be used by IDEs to request machine-readable fix-it hints without needing to adjust build flags.
      • commit 2bbf1bf467ec27e6bda8c40a7af5d09e46b33621 Author: David Malcolm Date: Fri Jan 22 15:27:44 2021 -0500 gcc 11: document GCC_EXTRA_DIAGNOSTIC_OUTPUT diff --git a/htdocs/gcc-11/changes.html b/htdocs/gcc-11/changes.html index 93c421e3..67e29619 100644 --- a/htdocs/gcc-11/changes.html +++ b/htdocs/gcc-11/changes.html @@ -562,8 +562,16 @@ a work-in-progress.

      - +

      Other significant improvements

      + +
        +
      • GCC has gained a new environment variable + GCC_EXTRA_DIAGNOSTIC_OUTPUT + which can be used by IDEs to request machine-readable fix-it hints + without needing to adjust build flags. +
        • +
      commit fc028704c31916bcc7bee24ebdc7eadd79edf494 Author: David Malcolm Date: Fri Jan 22 15:09:34 2021 -0500 gcc 11: document new malloc attribute arguments; integrate into analyzer changes diff --git a/htdocs/gcc-11/changes.html b/htdocs/gcc-11/changes.html index 3c18ef18..93c421e3 100644 --- a/htdocs/gcc-11/changes.html +++ b/htdocs/gcc-11/changes.html @@ -168,12 +168,20 @@ a work-in-progress.

      C family

        -
      • New attribute: +
      • New attributes:
        • The no_stack_protector attribute has been added to mark functions which should not be instrumented with stack protection (-fstack-protector).
          • +
        • The existing + malloc + attribute has been extended so that it can be used to identify + allocator/deallocator API pairs. A new + -Wmismatched-dealloc + warning will complain about incorrect calls. Additionally, the + static analyzer will use these attributes when checking for leaks, + double-frees, use-after-frees, and similar issues. +
        -
      • New warnings:
        • -Wsizeof-array-div, enabled by -Wall, warns @@ -507,15 +515,30 @@ a work-in-progress.

          has been completely rewritten for GCC 11, fixing numerous bugs, and allowing for the analyzer to scale to larger C source files.
          • -
        • As preliminary work towards eventually supporting C++, the - malloc/free checking within - -fanalyzer - has been generalized to also check new/delete - and new[]/delete[], adding a new - -Wanalyzer-mismatching-deallocation - warning. However, C++ is not yet properly supported by - -fanalyzer - (for example, exception-handling is unimplemented).
          • +
        • The analysis of allocations and deallocations has been generalized + beyond malloc and free. +
            +
          • As preliminary work towards eventually supporting C++, the + malloc/free checking will also + check new/delete + and new[]/delete[]. + However, C++ is not yet properly supported by + -fanalyzer + (for example, exception-handling is unimplemented). +
            • +
          • As noted above, the existing + malloc + attribute has been extended so that it can be used to identify + allocator/deallocator API pairs. The analyzer will use these + attributes when checking for leaks, double-frees, use-after-frees, and + similar issues. +
            • +
          • A new + -Wanalyzer-mismatching-deallocation + warning has been added, covering such mismatches as using + scalar delete rather vector delete[]. +
          +
        • The analyzer has gained warnings -Wanalyzer-shift-count-negative, -Wanalyzer-shift-count-overflow, commit ca033a4f79618381432533ee392b90fa4798c4ee Author: David Malcolm Date: Fri Jan 22 14:43:55 2021 -0500 gcc 11: libgccjit is no longer 'alpha' diff --git a/htdocs/gcc-11/changes.html b/htdocs/gcc-11/changes.html index 05b182bc..3c18ef18 100644 --- a/htdocs/gcc-11/changes.html +++ b/htdocs/gcc-11/changes.html @@ -331,6 +331,12 @@ a work-in-progress.

          libgccjit

            +
          • libgccjit was marked as merely "Alpha" quality when + originally added in GCC 5. + Given that we have maintained + API and ABI compatibility + since then and it is in use by various projects, we have removed that + caveat.
          • libgccjit can now be built for MinGW
          • The libgccjit API gained 10 new entry points: commit c1f912276b003b5c8233172d25d008f466ed20df Author: David Malcolm Date: Fri Jan 22 14:36:01 2021 -0500 gcc 11: -fanalyzer now supports GCC plugins diff --git a/htdocs/gcc-11/changes.html b/htdocs/gcc-11/changes.html index 7eeffb98..05b182bc 100644 --- a/htdocs/gcc-11/changes.html +++ b/htdocs/gcc-11/changes.html @@ -519,6 +519,10 @@ a work-in-progress.

            -fanalyzer is enabled.
            • +
          • The analyzer can now be extended by GCC plugins, allowing for + domain-specific path-sensitive warnings. An example of using a + GCC plugin to check for misuses of CPython's global interpreter lock + can be seen in the test suite
          • The analyzer has gained new debugging options -fdump-analyzer-json and -fno-analyzer-feasibility. ----------------------------------------------------------------------- Summary of changes: htdocs/gcc-11/changes.html | 92 +++++++++++++++++++++++++++++++++------------- 1 file changed, 67 insertions(+), 25 deletions(-) hooks/post-receive -- gcc-wwwdocs