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| author | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2017-09-15 17:11:47 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2017-09-15 17:11:47 +0000 |
| commit | 4a8ca690b0b73f4e0bae542fd69a1ee0d9e73126 (patch) | |
| tree | f5d02f2b4122c66d96510962c0ed533abe820c2d | |
| parent | f5e37f2ae57a87f8e661967f431e4bed37aceb2d (diff) | |
| download | gcc-4a8ca690b0b73f4e0bae542fd69a1ee0d9e73126.zip gcc-4a8ca690b0b73f4e0bae542fd69a1ee0d9e73126.tar.gz gcc-4a8ca690b0b73f4e0bae542fd69a1ee0d9e73126.tar.bz2 | |
c-pragma.c (handle_pragma_scalar_storage_order): Expand on error message for non-uniform endianness and issue a warning in C++.
* c-pragma.c (handle_pragma_scalar_storage_order): Expand on error
message for non-uniform endianness and issue a warning in C++.
From-SVN: r252831
| -rw-r--r-- | gcc/c-family/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/c-family/c-pragma.c | 14 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/sso-1.C | 8 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/sso-2.C | 6 |
5 files changed, 38 insertions, 2 deletions
diff --git a/gcc/c-family/ChangeLog b/gcc/c-family/ChangeLog index 4fffa31..a3f990d 100644 --- a/gcc/c-family/ChangeLog +++ b/gcc/c-family/ChangeLog @@ -1,3 +1,8 @@ +2017-09-15 Eric Botcazou <ebotcazou@adacore.com> + + * c-pragma.c (handle_pragma_scalar_storage_order): Expand on error + message for non-uniform endianness and issue a warning in C++. + 2017-09-15 Jakub Jelinek <jakub@redhat.com> * c.opt (Wc++1z-compat): Change from option to undocumented alias. diff --git a/gcc/c-family/c-pragma.c b/gcc/c-family/c-pragma.c index a2ffdba..f7b59b3 100644 --- a/gcc/c-family/c-pragma.c +++ b/gcc/c-family/c-pragma.c @@ -415,7 +415,19 @@ handle_pragma_scalar_storage_order (cpp_reader *ARG_UNUSED(dummy)) tree x; if (BYTES_BIG_ENDIAN != WORDS_BIG_ENDIAN) - error ("scalar_storage_order is not supported"); + { + error ("scalar_storage_order is not supported because endianness " + "is not uniform"); + return; + } + + if (c_dialect_cxx ()) + { + if (warn_unknown_pragmas > in_system_header_at (input_location)) + warning (OPT_Wunknown_pragmas, + "%<#pragma scalar_storage_order%> is not supported for C++"); + return; + } token = pragma_lex (&x); if (token != CPP_NAME) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index bdc79b6..303f700 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,4 +1,9 @@ -2017-09-13 Paolo Carlini <paolo.carlini@oracle.com> +2017-09-15 Eric Botcazou <ebotcazou@adacore.com> + + * g++.dg/sso-1.C: New test. + * g++.dg/sso-2.C: Likewise. + +2017-09-15 Paolo Carlini <paolo.carlini@oracle.com> PR c++/78648 * g++.dg/cpp0x/lambda/lambda-ice21.C: New. diff --git a/gcc/testsuite/g++.dg/sso-1.C b/gcc/testsuite/g++.dg/sso-1.C new file mode 100644 index 0000000..0f59d0c --- /dev/null +++ b/gcc/testsuite/g++.dg/sso-1.C @@ -0,0 +1,8 @@ +/* Test support of scalar_storage_order attribute */ + +/* { dg-do compile } */ + +struct __attribute__((scalar_storage_order("little-endian"))) Rec /* { dg-warning "attribute ignored" } */ +{ + int i; +}; diff --git a/gcc/testsuite/g++.dg/sso-2.C b/gcc/testsuite/g++.dg/sso-2.C new file mode 100644 index 0000000..402a61e --- /dev/null +++ b/gcc/testsuite/g++.dg/sso-2.C @@ -0,0 +1,6 @@ +/* Test support of scalar_storage_order pragma */ + +/* { dg-do compile } */ +/* { dg-options "-Wall" } */ + +#pragma scalar_storage_order little-endian /* { dg-warning "not supported" } */ |