diff options
Diffstat (limited to 'gcc/fortran/invoke.texi')
| -rw-r--r-- | gcc/fortran/invoke.texi | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/gcc/fortran/invoke.texi b/gcc/fortran/invoke.texi index df9019c..ed3e1e7 100644 --- a/gcc/fortran/invoke.texi +++ b/gcc/fortran/invoke.texi @@ -138,8 +138,8 @@ and warnings}. @gccoptlist{-fmax-errors=@var{n} @gol -fsyntax-only -pedantic -pedantic-errors @gol -Wall -Waliasing -Wampersand -Warray-bounds -Wcharacter-truncation @gol --Wconversion -Wimplicit-interface -Wline-truncation -Wnonstd-intrinsics @gol --Wsurprising -Wno-tabs -Wunderflow -Wunused-parameter} +-Wconversion -Wimplicit-interface -Wline-truncation -Wintrinsics-std @gol +-Wsurprising -Wno-tabs -Wunderflow -Wunused-parameter -Wintrinsics-shadow} @item Debugging Options @xref{Debugging Options,,Options for debugging your program or GNU Fortran}. @@ -211,7 +211,9 @@ form is determined by the file extension. Accept all of the intrinsic procedures provided in libgfortran without regard to the setting of @option{-std}. In particular, this option can be quite useful with @option{-std=f95}. Additionally, -@command{gfortran} will ignore @option{-Wnonstd-intrinsics}. +@command{gfortran} will ignore @option{-Wintrinsics-std} and will never try +to link to an @code{EXTERNAL} version if the intrinsic is not included in the +selected standard. @item -fd-lines-as-code @item -fd-lines-as-comments @@ -662,8 +664,8 @@ warnings. Enables commonly used warning options pertaining to usage that we recommend avoiding and that we believe are easy to avoid. This currently includes @option{-Waliasing}, -@option{-Wampersand}, @option{-Wsurprising}, @option{-Wnonstd-intrinsics}, -@option{-Wno-tabs}, and @option{-Wline-truncation}. +@option{-Wampersand}, @option{-Wsurprising}, @option{-Wintrinsics-std}, +@option{-Wno-tabs}, @option{-Wintrinsic-shadow} and @option{-Wline-truncation}. @item -Waliasing @opindex @code{Waliasing} @@ -728,11 +730,15 @@ Warn if a procedure is called without an explicit interface. Note this only checks that an explicit interface is present. It does not check that the declared interfaces are consistent across program units. -@item -Wnonstd-intrinsics -@opindex @code{Wnonstd-intrinsics} +@item -Wintrinsics-std +@opindex @code{Wintrinsics-std} @cindex warnings, non-standard intrinsics -Warn if the user tries to use an intrinsic that does not belong to the -standard the user has chosen via the @option{-std} option. +@cindex warnings, intrinsics of other standards +Warn if @command{gfortran} finds a procedure named like an intrinsic not +available in the currently selected standard (with @option{-std}) and treats +it as @code{EXTERNAL} procedure because of this. @option{-fall-intrinsics} can +be used to never trigger this behaviour and always link to the intrinsic +regardless of the selected standard. @item -Wsurprising @opindex @code{Wsurprising} @@ -772,6 +778,15 @@ is active for @option{-pedantic}, @option{-std=f95}, @option{-std=f2003}, Produce a warning when numerical constant expressions are encountered, which yield an UNDERFLOW during compilation. +@item -Wintrinsic-shadow +@opindex @code{Wintrinsic-shadow} +@cindex warnings, intrinsic +@cindex intrinsic +Warn if a user-defined procedure or module procedure has the same name as an +intrinsic; in this case, an explicit interface or @code{EXTERNAL} or +@code{INTRINSIC} declaration might be needed to get calls later resolved to +the desired intrinsic/procedure. + @item -Wunused-parameter @opindex @code{Wunused-parameter} @cindex warnings, unused parameter |