From: Maciej W. Rozycki Date: Sat, 30 Nov 2019 11:10:50 +0000 (+0000) Subject: driver: Do not warn about ineffective `-x' option if no inputs were given X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7a4f45d7e61e651330931df9d09fe6299874929d;p=gcc.git driver: Do not warn about ineffective `-x' option if no inputs were given Fix an issue with the GCC driver and the `-x' option where a warning is issued in an invocation like: $ riscv64-linux-gnu-gcc -print-multi-directory -x c++ riscv64-linux-gnu-gcc: warning: '-x c++' after last input file has no effect lib64/lp64d $ where no inputs were given and hence the use of `-x' is irrelevant. The statement printed is also untrue as the `-x' does not come after the last input file given that none was given. Do not print it then if no inputs were supplied. * gcc.c (process_command): Only warn about an ineffective `-x' option if any input files have actually been supplied. From-SVN: r278872 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e17440407cb..2a29e1b2b4d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2019-11-30 Maciej W. Rozycki + + * gcc.c (process_command): Only warn about an ineffective `-x' + option if any input files have actually been supplied. + 2019-11-30 Maciej W. Rozycki * doc/install.texi (Options specification): Remove the list of diff --git a/gcc/gcc.c b/gcc/gcc.c index 539ded01ce6..4428d50c390 100644 --- a/gcc/gcc.c +++ b/gcc/gcc.c @@ -4741,7 +4741,7 @@ process_command (unsigned int decoded_options_count, /* More prefixes are enabled in main, after we read the specs file and determine whether this is cross-compilation or not. */ - if (n_infiles == last_language_n_infiles && spec_lang != 0) + if (n_infiles != 0 && n_infiles == last_language_n_infiles && spec_lang != 0) warning (0, "%<-x %s%> after last input file has no effect", spec_lang); /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG