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| author | Joern Rennecke <joern.rennecke@riscy-ip.com> | 2021-05-20 13:21:41 +0100 |
|---|---|---|
| committer | Joern Rennecke <joern.rennecke@riscy-ip.com> | 2021-05-20 13:21:41 +0100 |
| commit | 66c5f24788652a49b528f14e23e8121ad0935ace (patch) | |
| tree | 6ff082292f9467871f06345fa7873dd956b6e2b6 | |
| parent | 928e4ff1aea45165efbdc8ba6e409b191c2dde6c (diff) | |
| download | gcc-66c5f24788652a49b528f14e23e8121ad0935ace.zip gcc-66c5f24788652a49b528f14e23e8121ad0935ace.tar.gz gcc-66c5f24788652a49b528f14e23e8121ad0935ace.tar.bz2 | |
libstdc++: Disable floating_to_chars.cc on 16 bit targets
This patch conditionally disables the compilation of floating_to_chars.cc
on 16 bit targets, thus fixing a build failure for these targets as
the POW10_SPLIT_2 array exceeds the maximum object size.
libstdc++-v3/
PR libstdc++/100361
* include/std/charconv (to_chars): Hide the overloads for
floating-point types for 16 bit targets.
* src/c++17/floating_to_chars.cc: Don't compile for 16 bit targets.
* testsuite/20_util/to_chars/double.cc: Run this test only on
size32plus targets.
* testsuite/20_util/to_chars/float.cc: Likewise.
* testsuite/20_util/to_chars/long_double.cc: Likewise.
| -rw-r--r-- | libstdc++-v3/include/std/charconv | 3 | ||||
| -rw-r--r-- | libstdc++-v3/src/c++17/floating_to_chars.cc | 4 | ||||
| -rw-r--r-- | libstdc++-v3/testsuite/20_util/to_chars/double.cc | 1 | ||||
| -rw-r--r-- | libstdc++-v3/testsuite/20_util/to_chars/float.cc | 1 | ||||
| -rw-r--r-- | libstdc++-v3/testsuite/20_util/to_chars/long_double.cc | 1 |
5 files changed, 8 insertions, 2 deletions
diff --git a/libstdc++-v3/include/std/charconv b/libstdc++-v3/include/std/charconv index 193702e..ac9c34d 100644 --- a/libstdc++-v3/include/std/charconv +++ b/libstdc++-v3/include/std/charconv @@ -703,7 +703,8 @@ namespace __detail chars_format __fmt = chars_format::general) noexcept; #endif -#if _GLIBCXX_FLOAT_IS_IEEE_BINARY32 && _GLIBCXX_DOUBLE_IS_IEEE_BINARY64 +#if _GLIBCXX_FLOAT_IS_IEEE_BINARY32 && _GLIBCXX_DOUBLE_IS_IEEE_BINARY64 \ + && __SIZE_WIDTH__ >= 32 // Floating-point std::to_chars // Overloads for float. diff --git a/libstdc++-v3/src/c++17/floating_to_chars.cc b/libstdc++-v3/src/c++17/floating_to_chars.cc index 1a0abb9..44f547a 100644 --- a/libstdc++-v3/src/c++17/floating_to_chars.cc +++ b/libstdc++-v3/src/c++17/floating_to_chars.cc @@ -50,7 +50,9 @@ extern "C" int __sprintfieee128(char*, const char*, ...); // This implementation crucially assumes float/double have the // IEEE binary32/binary64 formats. -#if _GLIBCXX_FLOAT_IS_IEEE_BINARY32 && _GLIBCXX_DOUBLE_IS_IEEE_BINARY64 +#if _GLIBCXX_FLOAT_IS_IEEE_BINARY32 && _GLIBCXX_DOUBLE_IS_IEEE_BINARY64 \ + /* And it also assumes that uint64_t POW10_SPLIT_2[3133][3] is valid. */\ + && __SIZE_WIDTH__ >= 32 // Determine the binary format of 'long double'. diff --git a/libstdc++-v3/testsuite/20_util/to_chars/double.cc b/libstdc++-v3/testsuite/20_util/to_chars/double.cc index bb6f744..64e6221 100644 --- a/libstdc++-v3/testsuite/20_util/to_chars/double.cc +++ b/libstdc++-v3/testsuite/20_util/to_chars/double.cc @@ -33,6 +33,7 @@ // { dg-do run { target c++17 } } // { dg-require-effective-target ieee-floats } +// { dg-require-effective-target size32plus } #include <charconv> diff --git a/libstdc++-v3/testsuite/20_util/to_chars/float.cc b/libstdc++-v3/testsuite/20_util/to_chars/float.cc index 0c8dd4f..73b9081 100644 --- a/libstdc++-v3/testsuite/20_util/to_chars/float.cc +++ b/libstdc++-v3/testsuite/20_util/to_chars/float.cc @@ -33,6 +33,7 @@ // { dg-do run { target c++17 } } // { dg-require-effective-target ieee-floats } +// { dg-require-effective-target size32plus } #include <charconv> diff --git a/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc b/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc index 8cf45ad..447e536 100644 --- a/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc +++ b/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc @@ -35,6 +35,7 @@ // { dg-xfail-run-if "Non-conforming printf (see PR98384)" { *-*-solaris* *-*-darwin* } } // { dg-require-effective-target ieee-floats } +// { dg-require-effective-target size32plus } #include <charconv> |