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author | Tobias Burnus <tobias@codesourcery.com> | 2022-09-08 21:03:21 +0200 |
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committer | Tobias Burnus <tobias@codesourcery.com> | 2022-09-08 21:03:21 +0200 |
commit | 264deecb16abcfc8ca8efe9b94b0ad55febd55cc (patch) | |
tree | 991f5d125971b4361fd84221dd642f187358361c | |
parent | 4f05ff34d63b582557918189528531f35041ef0e (diff) | |
download | gcc-264deecb16abcfc8ca8efe9b94b0ad55febd55cc.zip gcc-264deecb16abcfc8ca8efe9b94b0ad55febd55cc.tar.gz gcc-264deecb16abcfc8ca8efe9b94b0ad55febd55cc.tar.bz2 |
OpenMP: Document ompx warnings + add Fortran omx warning [PR106670]
omp/ompx sentinels are for vendor extensions; as they might be required for
the correctness of the program, a warning should be printable. This patch
documents in the OpenMP 5.2 table the existing warnings, including the new
warning for for fixed source form Fortran.
PR fortran/106670
gcc/fortran/ChangeLog:
* scanner.cc (skip_fixed_omp_sentinel): Add -Wsurprising warning
for 'omx' sentinels with -fopenmp.
* invoke.texi (-Wsurprising): Document additional warning case.
libgomp/ChangeLog:
* libgomp.texi (OpenMP 5.2): Add comment to ompx/omx entry.
gcc/testsuite/ChangeLog:
* c-c++-common/gomp/ompx-1.c: New test.
* c-c++-common/gomp/ompx-2.c: New test.
* g++.dg/gomp/ompx-attrs-1.C: New test.
* gfortran.dg/gomp/ompx-1.f90: New test.
* gfortran.dg/gomp/omx-1.f: New test.
* gfortran.dg/gomp/omx-2.f: New test.
-rw-r--r-- | gcc/fortran/invoke.texi | 5 | ||||
-rw-r--r-- | gcc/fortran/scanner.cc | 8 | ||||
-rw-r--r-- | gcc/testsuite/c-c++-common/gomp/ompx-1.c | 4 | ||||
-rw-r--r-- | gcc/testsuite/c-c++-common/gomp/ompx-2.c | 5 | ||||
-rw-r--r-- | gcc/testsuite/g++.dg/gomp/ompx-attrs-1.C | 7 | ||||
-rw-r--r-- | gcc/testsuite/gfortran.dg/gomp/ompx-1.f90 | 2 | ||||
-rw-r--r-- | gcc/testsuite/gfortran.dg/gomp/omx-1.f | 7 | ||||
-rw-r--r-- | gcc/testsuite/gfortran.dg/gomp/omx-2.f | 9 | ||||
-rw-r--r-- | libgomp/libgomp.texi | 8 |
9 files changed, 52 insertions, 3 deletions
diff --git a/gcc/fortran/invoke.texi b/gcc/fortran/invoke.texi index 4d1e0d6..58502d3 100644 --- a/gcc/fortran/invoke.texi +++ b/gcc/fortran/invoke.texi @@ -1092,6 +1092,11 @@ The type of a function result is declared more than once with the same type. If @item A @code{CHARACTER} variable is declared with negative length. + +@item +With @option{-fopenmp}, for fixed-form source code, when an @code{omx} +vendor-extension sentinel is encountered. (The equivalent @code{ompx}, +used in free-form source code, is diagnosed by default.) @end itemize @item -Wtabs diff --git a/gcc/fortran/scanner.cc b/gcc/fortran/scanner.cc index 2dff251..fa1d9cb 100644 --- a/gcc/fortran/scanner.cc +++ b/gcc/fortran/scanner.cc @@ -982,8 +982,9 @@ static bool skip_fixed_omp_sentinel (locus *start) { gfc_char_t c; - if (((c = next_char ()) == 'm' || c == 'M') - && ((c = next_char ()) == 'p' || c == 'P')) + if ((c = next_char ()) != 'm' && c != 'M') + return false; + if ((c = next_char ()) == 'p' || c == 'P') { c = next_char (); if (c != '\n' @@ -1005,6 +1006,9 @@ skip_fixed_omp_sentinel (locus *start) } } } + else if (UNLIKELY (c == 'x' || c == 'X')) + gfc_warning_now (OPT_Wsurprising, + "Ignoring '!$omx' vendor-extension sentinel at %C"); return false; } diff --git a/gcc/testsuite/c-c++-common/gomp/ompx-1.c b/gcc/testsuite/c-c++-common/gomp/ompx-1.c new file mode 100644 index 0000000..9758d0f --- /dev/null +++ b/gcc/testsuite/c-c++-common/gomp/ompx-1.c @@ -0,0 +1,4 @@ +void f(void) +{ + #pragma ompx some_vendor_extension +} diff --git a/gcc/testsuite/c-c++-common/gomp/ompx-2.c b/gcc/testsuite/c-c++-common/gomp/ompx-2.c new file mode 100644 index 0000000..4b66b0e --- /dev/null +++ b/gcc/testsuite/c-c++-common/gomp/ompx-2.c @@ -0,0 +1,5 @@ +/* { dg-additional-options "-Wunknown-pragmas" } */ +void f(void) +{ + #pragma ompx some_vendor_extension /* { dg-warning "-:ignoring '#pragma ompx some_vendor_extension'" } */ +} diff --git a/gcc/testsuite/g++.dg/gomp/ompx-attrs-1.C b/gcc/testsuite/g++.dg/gomp/ompx-attrs-1.C new file mode 100644 index 0000000..2e9fc0b --- /dev/null +++ b/gcc/testsuite/g++.dg/gomp/ompx-attrs-1.C @@ -0,0 +1,7 @@ +// { dg-do compile { target c++11 } } + +void +foo () +{ + [[ompx::directive(some_vendor_extension)]]; /* { dg-warning "attributes at the beginning of statement are ignored" } */ +} diff --git a/gcc/testsuite/gfortran.dg/gomp/ompx-1.f90 b/gcc/testsuite/gfortran.dg/gomp/ompx-1.f90 new file mode 100644 index 0000000..e5dc652 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/gomp/ompx-1.f90 @@ -0,0 +1,2 @@ +!$ompx foo ! { dg-warning "!.OMP at .1. starts a commented line as it neither is followed by a space nor is a continuation line" } +end diff --git a/gcc/testsuite/gfortran.dg/gomp/omx-1.f b/gcc/testsuite/gfortran.dg/gomp/omx-1.f new file mode 100644 index 0000000..4febf89 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/gomp/omx-1.f @@ -0,0 +1,7 @@ +!$omx foo +!$OMX foo +c$oMx foo +c$OMx foo +*$oMx foo +*$OMx foo + end diff --git a/gcc/testsuite/gfortran.dg/gomp/omx-2.f b/gcc/testsuite/gfortran.dg/gomp/omx-2.f new file mode 100644 index 0000000..3c107d9 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/gomp/omx-2.f @@ -0,0 +1,9 @@ +! { dg-additional-options "-Wsurprising" } + +!$omx foo ! { dg-warning "Ignoring '!.omx' vendor-extension sentinel" } +!$OMX foo ! { dg-warning "Ignoring '!.omx' vendor-extension sentinel" } +c$oMx foo ! { dg-warning "Ignoring '!.omx' vendor-extension sentinel" } +c$OMx foo ! { dg-warning "Ignoring '!.omx' vendor-extension sentinel" } +*$oMx foo ! { dg-warning "Ignoring '!.omx' vendor-extension sentinel" } +*$OMx foo ! { dg-warning "Ignoring '!.omx' vendor-extension sentinel" } + end diff --git a/libgomp/libgomp.texi b/libgomp/libgomp.texi index 8847f3e..3dc467a 100644 --- a/libgomp/libgomp.texi +++ b/libgomp/libgomp.texi @@ -361,7 +361,13 @@ to address of matching mapped list item per 5.1, Sect. 2.21.7.2 @tab N @tab @item @code{omp_in_explicit_task} routine and @emph{implicit-task-var} ICV @tab N @tab @item @code{omp}/@code{ompx}/@code{omx} sentinels and @code{omp_}/@code{ompx_} - namespaces @tab N/A @tab + namespaces @tab N/A + @tab warning for @code{omp/ompx} sentinels@footnote{@code{omp/ompx} + sentinels as C/C++ pragma and C++ attributes are warned for with + @code{-Wunknown-pragmas} (implied by @code{-Wall}) and @code{-Wattributes} + (enabled by default), respectively; for Fortran free-source code, there is + a warning enabled by default and for fixed-source code with + @code{-Wsurprising} (enabled by @code{-Wall})} @item Clauses on @code{end} directive can be on directive @tab N @tab @item Deprecation of no-argument @code{destroy} clause on @code{depobj} @tab N @tab |