* [AVR] Fix unused argument warning @ 2021-09-30 19:27 Jan-Benedict Glaw 2021-10-05 14:46 ` PING: " Jan-Benedict Glaw 0 siblings, 1 reply; 5+ messages in thread From: Jan-Benedict Glaw @ 2021-09-30 19:27 UTC (permalink / raw) To: Denis Chertykov, gcc-patches [-- Attachment #1: Type: text/plain, Size: 2466 bytes --] Hi! Configuring GCC with --target=avr-elf --enable-werror-always, I see this warning that's easy to fix. The options are parsed with a lot of #ifdefs and it may actually just be unused. Let's just mark it as such. [all 2021-09-30 00:43:46] /usr/lib/gcc-snapshot/bin/g++ -fno-PIE -c -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-error=format-diag -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common -DHAVE_CONFIG_H -I. -I. -I../../gcc/gcc -I../../gcc/gcc/. -I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -I../../gcc/gcc/../libcody -I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd -I../libdecnumber -I../../gcc/gcc/../libbacktrace -o avr-common.o -MT avr-common.o -MMD -MP -MF ./.deps/avr-common.TPo ../../gcc/gcc/common/config/avr/avr-common.c [all 2021-09-30 00:43:47] ../../gcc/gcc/common/config/avr/avr-common.c: In function 'bool avr_handle_option(gcc_options*, gcc_options*, const cl_decoded_option*, location_t)': [all 2021-09-30 00:43:47] ../../gcc/gcc/common/config/avr/avr-common.c:80:72: error: unused parameter 'loc' [-Werror=unused-parameter] [all 2021-09-30 00:43:47] 80 | const struct cl_decoded_option *decoded, location_t loc) [all 2021-09-30 00:43:47] | ~~~~~~~~~~~^~~ [all 2021-09-30 00:43:47] cc1plus: all warnings being treated as errors [all 2021-09-30 00:43:47] make[1]: *** [Makefile:2420: avr-common.o] Error 1 gcc/ChangeLog: * common/config/avr/avr-common.c (avr_handle_option): Mark argument as ATTRIBUTE_UNUSED. diff --git a/gcc/common/config/avr/avr-common.c b/gcc/common/config/avr/avr-common.c index 6486659d27c..a6939ad03d3 100644 --- a/gcc/common/config/avr/avr-common.c +++ b/gcc/common/config/avr/avr-common.c @@ -77,7 +77,8 @@ static const struct default_options avr_option_optimization_table[] = static bool avr_handle_option (struct gcc_options *opts, struct gcc_options*, - const struct cl_decoded_option *decoded, location_t loc) + const struct cl_decoded_option *decoded, + location_t loc ATTRIBUTE_UNUSED) { int value = decoded->value; Ok for trunk? Thanks, Jan-Benedict -- [-- Attachment #2: signature.asc --] [-- Type: application/pgp-signature, Size: 195 bytes --] ^ permalink raw reply [flat|nested] 5+ messages in thread
* PING: [AVR] Fix unused argument warning 2021-09-30 19:27 [AVR] Fix unused argument warning Jan-Benedict Glaw @ 2021-10-05 14:46 ` Jan-Benedict Glaw 2021-10-05 14:53 ` Jeff Law 0 siblings, 1 reply; 5+ messages in thread From: Jan-Benedict Glaw @ 2021-10-05 14:46 UTC (permalink / raw) To: Denis Chertykov, gcc-patches [-- Attachment #1: Type: text/plain, Size: 947 bytes --] Hi, On Thu, 2021-09-30 21:27:23 +0200, Jan-Benedict Glaw <jbglaw@lug-owl.de> wrote: > gcc/ChangeLog: > > * common/config/avr/avr-common.c (avr_handle_option): Mark > argument as ATTRIBUTE_UNUSED. > > diff --git a/gcc/common/config/avr/avr-common.c b/gcc/common/config/avr/avr-common.c > index 6486659d27c..a6939ad03d3 100644 > --- a/gcc/common/config/avr/avr-common.c > +++ b/gcc/common/config/avr/avr-common.c > @@ -77,7 +77,8 @@ static const struct default_options avr_option_optimization_table[] = > > static bool > avr_handle_option (struct gcc_options *opts, struct gcc_options*, > - const struct cl_decoded_option *decoded, location_t loc) > + const struct cl_decoded_option *decoded, > + location_t loc ATTRIBUTE_UNUSED) > { > int value = decoded->value; > > > > Ok for trunk? Wanted to give this a ping. Thanks, Jan-Benedict -- [-- Attachment #2: signature.asc --] [-- Type: application/pgp-signature, Size: 195 bytes --] ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: PING: [AVR] Fix unused argument warning 2021-10-05 14:46 ` PING: " Jan-Benedict Glaw @ 2021-10-05 14:53 ` Jeff Law 2021-10-05 15:03 ` Jan-Benedict Glaw 0 siblings, 1 reply; 5+ messages in thread From: Jeff Law @ 2021-10-05 14:53 UTC (permalink / raw) To: Jan-Benedict Glaw, Denis Chertykov, gcc-patches On 10/5/2021 8:46 AM, Jan-Benedict Glaw wrote: > Hi, > > On Thu, 2021-09-30 21:27:23 +0200, Jan-Benedict Glaw <jbglaw@lug-owl.de> wrote: >> gcc/ChangeLog: >> >> * common/config/avr/avr-common.c (avr_handle_option): Mark >> argument as ATTRIBUTE_UNUSED. >> >> diff --git a/gcc/common/config/avr/avr-common.c b/gcc/common/config/avr/avr-common.c >> index 6486659d27c..a6939ad03d3 100644 >> --- a/gcc/common/config/avr/avr-common.c >> +++ b/gcc/common/config/avr/avr-common.c >> @@ -77,7 +77,8 @@ static const struct default_options avr_option_optimization_table[] = >> >> static bool >> avr_handle_option (struct gcc_options *opts, struct gcc_options*, >> - const struct cl_decoded_option *decoded, location_t loc) >> + const struct cl_decoded_option *decoded, >> + location_t loc ATTRIBUTE_UNUSED) >> { >> int value = decoded->value; >> >> >> >> Ok for trunk? > Wanted to give this a ping. I thought I sent a reply a few days ago. Instead of using ATTRIBUTE_UNUSED, just drop the parameter's name. You should consider that pre-approved for this and any other cases you run into. jeff ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: PING: [AVR] Fix unused argument warning 2021-10-05 14:53 ` Jeff Law @ 2021-10-05 15:03 ` Jan-Benedict Glaw 2021-10-05 15:06 ` Jeff Law 0 siblings, 1 reply; 5+ messages in thread From: Jan-Benedict Glaw @ 2021-10-05 15:03 UTC (permalink / raw) To: Jeff Law; +Cc: Denis Chertykov, gcc-patches [-- Attachment #1: Type: text/plain, Size: 2658 bytes --] Hi Jeff, On Tue, 2021-10-05 08:53:00 -0600, Jeff Law <jeffreyalaw@gmail.com> wrote: > On 10/5/2021 8:46 AM, Jan-Benedict Glaw wrote: > > On Thu, 2021-09-30 21:27:23 +0200, Jan-Benedict Glaw <jbglaw@lug-owl.de> wrote: > > > gcc/ChangeLog: > > > > > > * common/config/avr/avr-common.c (avr_handle_option): Mark > > > argument as ATTRIBUTE_UNUSED. > > > > > > diff --git a/gcc/common/config/avr/avr-common.c b/gcc/common/config/avr/avr-common.c > > > index 6486659d27c..a6939ad03d3 100644 > > > --- a/gcc/common/config/avr/avr-common.c > > > +++ b/gcc/common/config/avr/avr-common.c > > > @@ -77,7 +77,8 @@ static const struct default_options avr_option_optimization_table[] = > > > static bool > > > avr_handle_option (struct gcc_options *opts, struct gcc_options*, > > > - const struct cl_decoded_option *decoded, location_t loc) > > > + const struct cl_decoded_option *decoded, > > > + location_t loc ATTRIBUTE_UNUSED) > > > { > > > int value = decoded->value; > > > > > > > > > Ok for trunk? > > Wanted to give this a ping. > I thought I sent a reply a few days ago. Instead of using ATTRIBUTE_UNUSED, > just drop the parameter's name. You should consider that pre-approved for > this and any other cases you run into. Not quite I think. The `loc`ation parameter is used under some circumstances, though it's dependant on some #ifdefs: 78 static bool 79 avr_handle_option (struct gcc_options *opts, struct gcc_options*, 80 const struct cl_decoded_option *decoded, 81 location_t loc ATTRIBUTE_UNUSED) 82 { 83 int value = decoded->value; 84 85 switch (decoded->opt_index) 86 { 87 case OPT_mdouble_: 88 if (value == 64) 89 { 90 #if !defined (HAVE_DOUBLE64) 91 error_at (loc, "option %<-mdouble=64%> is only available if " 92 "configured %<--with-double={64|64,32|32,64}%>"); 93 #endif 94 opts->x_avr_long_double = 64; 95 } 96 else if (value == 32) 97 { 98 #if !defined (HAVE_DOUBLE32) 99 error_at (loc, "option %<-mdouble=32%> is only available if " 100 "configured %<--with-double={32|32,64|64,32}%>"); 101 #endif 102 } Also, this implements the TARGET_HANDLE_OPTION function, so changing the arguments wouldn't really work and as the `loc` argument is used under certain circumstances, I kept it as is and marked it unused. (Adding an #ifdef in front doesn't make the code any more readable.) Thanks, Jan-Benedict -- [-- Attachment #2: signature.asc --] [-- Type: application/pgp-signature, Size: 195 bytes --] ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: PING: [AVR] Fix unused argument warning 2021-10-05 15:03 ` Jan-Benedict Glaw @ 2021-10-05 15:06 ` Jeff Law 0 siblings, 0 replies; 5+ messages in thread From: Jeff Law @ 2021-10-05 15:06 UTC (permalink / raw) To: Jan-Benedict Glaw; +Cc: Denis Chertykov, gcc-patches On 10/5/2021 9:03 AM, Jan-Benedict Glaw wrote: > Hi Jeff, > > On Tue, 2021-10-05 08:53:00 -0600, Jeff Law <jeffreyalaw@gmail.com> wrote: >> On 10/5/2021 8:46 AM, Jan-Benedict Glaw wrote: >>> On Thu, 2021-09-30 21:27:23 +0200, Jan-Benedict Glaw <jbglaw@lug-owl.de> wrote: >>>> gcc/ChangeLog: >>>> >>>> * common/config/avr/avr-common.c (avr_handle_option): Mark >>>> argument as ATTRIBUTE_UNUSED. >>>> >>>> diff --git a/gcc/common/config/avr/avr-common.c b/gcc/common/config/avr/avr-common.c >>>> index 6486659d27c..a6939ad03d3 100644 >>>> --- a/gcc/common/config/avr/avr-common.c >>>> +++ b/gcc/common/config/avr/avr-common.c >>>> @@ -77,7 +77,8 @@ static const struct default_options avr_option_optimization_table[] = >>>> static bool >>>> avr_handle_option (struct gcc_options *opts, struct gcc_options*, >>>> - const struct cl_decoded_option *decoded, location_t loc) >>>> + const struct cl_decoded_option *decoded, >>>> + location_t loc ATTRIBUTE_UNUSED) >>>> { >>>> int value = decoded->value; >>>> >>>> >>>> Ok for trunk? >>> Wanted to give this a ping. >> I thought I sent a reply a few days ago. Instead of using ATTRIBUTE_UNUSED, >> just drop the parameter's name. You should consider that pre-approved for >> this and any other cases you run into. > Not quite I think. The `loc`ation parameter is used under some > circumstances, though it's dependant on some #ifdefs: Sigh. We rooted out most of those kinds of conditional compilation from the core compiler years ago for precisely these kinds of reasons. Go ahead with the ATTRIBUTE_UNUSED in this case. But generally dropping the argument's name is better. Extra points if you killed the conditional compilation in the avr backend, but I don't think that should be a requirement to move forward. Jeff ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2021-10-05 15:06 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-09-30 19:27 [AVR] Fix unused argument warning Jan-Benedict Glaw 2021-10-05 14:46 ` PING: " Jan-Benedict Glaw 2021-10-05 14:53 ` Jeff Law 2021-10-05 15:03 ` Jan-Benedict Glaw 2021-10-05 15:06 ` Jeff Law
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