[lkml]   [2004]   [Jan]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    Patch in this message
    Subject[PATCH] disable gcc warnings of sign/unsigned comparison

    Please consider applying the following patch.

    This patch turns off all gcc warnings on comparing signed with unsigned
    numbers, by setting the gcc option -Wno-sign-compare in the top

    These warnings state:

    warning: comparison between signed and unsigned

    This patch is a "personal preference" decision. If you choose to
    reject it, I seek no justifications.

    I like it, and at least with the version of gcc I happen to be using
    (3.3), find it really helps. This version of gcc dumps out many such
    complaints otherwise.

    And one could make a case that Linus would like this patch, from his
    remark of a couple months ago, on a thread with the Subject of:

    [PATCH] irda: fix type of struct irda_ias_set.attribute.irda_attrib_string.len

    in which Linus wrote:
    > That's why I hate the "sign compare" warning of gcc so much - it warns
    > about things that you CANNOT sanely write in any other way. That makes
    > that particular warning _evil_, since it encourages people to write crap
    > code.

    But what Linus actually thinks of this, I've no further clues.

    The patch was computed against 2.6.0-mm2.

    Thank-you for your consideration.

    # This is a BitKeeper generated patch for the following project:
    # Project Name: Linux kernel tree
    # This patch format is intended for GNU patch command version 2.5 or higher.
    # This patch includes the following deltas:
    # ChangeSet 1.1536 -> 1.1537
    # Makefile 1.441 -> 1.442
    # The following is the BitKeeper ChangeSet Log
    # --------------------------------------------
    # 04/01/01 1.1537
    # ignore gcc sign compare warnings
    # --------------------------------------------
    diff -Nru a/Makefile b/Makefile
    --- a/Makefile Thu Jan 1 04:13:04 2004
    +++ b/Makefile Thu Jan 1 04:13:04 2004
    @@ -161,7 +161,7 @@

    HOSTCC = gcc
    HOSTCXX = g++
    -HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
    +HOSTCFLAGS = -Wall -Wstrict-prototypes -Wno-sign-compare -O2 -fomit-frame-pointer

    # Decide whether to build built-in, modular, or both.
    @@ -275,7 +275,7 @@
    CPPFLAGS := -D__KERNEL__ -Iinclude \
    $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include)

    -CFLAGS := -Wall -Wstrict-prototypes -Wno-trigraphs \
    +CFLAGS := -Wall -Wstrict-prototypes -Wno-sign-compare -Wno-trigraphs \
    -fno-strict-aliasing -fno-common

    I won't rest till it's the best ...
    Programmer, Linux Scalability
    Paul Jackson <> 1.650.933.1373
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 13:59    [W:0.021 / U:2.428 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site