Unverified Commit b5c5909f authored by Marcel Raad's avatar Marcel Raad
Browse files

curl-compilers.m4: enable double-promotion warning 

Enable -Wdouble-promotion for both GCC and clang. It warns on implicit
promotion from float to double.

Closes https://github.com/curl/curl/pull/1578
parent 783ce023

m4/curl-compilers.m4

+10 −0
Original line number Diff line number Diff line
@@ -891,6 +891,11 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [ 
          if test "$compiler_num" -ge "209"; then

            tmp_CFLAGS="$tmp_CFLAGS -Wshift-sign-overflow"

          fi

          #

          dnl Only clang 3.6 or later

          if test "$compiler_num" -ge "306"; then

            tmp_CFLAGS="$tmp_CFLAGS -Wdouble-promotion"

          fi

        fi

        ;;

        #
@@ -1002,6 +1007,11 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [ 
            fi

          fi

          #

          dnl Only gcc 4.6 or later

          if test "$compiler_num" -ge "406"; then

            tmp_CFLAGS="$tmp_CFLAGS -Wdouble-promotion"

          fi

          #

        fi

        #

        dnl Do not issue warnings for code in system include paths.