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| author | Jakub Jelinek <jakub@redhat.com> | 2018-02-16 10:05:35 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2018-02-16 10:05:35 +0100 |
| commit | ab67039ccd31de6d0192d4560ff971ff0af81726 (patch) | |
| tree | 0263d95f48f4201cf663f022f24d2e4e85fd6d6d /gcc/system.h | |
| parent | 33006d53fd3adf2baae85b625e3ec99908b7a31c (diff) | |
| download | gcc-ab67039ccd31de6d0192d4560ff971ff0af81726.zip gcc-ab67039ccd31de6d0192d4560ff971ff0af81726.tar.gz gcc-ab67039ccd31de6d0192d4560ff971ff0af81726.tar.bz2 | |
re PR bootstrap/84405 (Fails to bootstrap with GCC 4.1.2, GCC 4.2.4)
PR bootstrap/84405
* system.h (BROKEN_VALUE_INITIALIZATION): Define for GCC < 4.3.
* vec.h (vec_default_construct): Use memset instead of placement new
if BROKEN_VALUE_INITIALIZATION is defined.
* hash-table.h (hash_table<Descriptor, Allocator>::empty_slow): Use
memset instead of value initialization if BROKEN_VALUE_INITIALIZATION
is defined.
From-SVN: r257726
Diffstat (limited to 'gcc/system.h')
| -rw-r--r-- | gcc/system.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/system.h b/gcc/system.h index 5d9aaae..4abc321 100644 --- a/gcc/system.h +++ b/gcc/system.h @@ -824,6 +824,12 @@ extern void fancy_abort (const char *, int, const char *) /* Some compilers do not allow the use of unsigned char in bitfields. */ #define BOOL_BITFIELD unsigned int +/* GCC older than 4.4 have broken C++ value initialization handling, see + PR11309, PR30111, PR33916, PR82939 and PR84405 for more details. */ +#if GCC_VERSION > 0 && GCC_VERSION < 4004 && !defined(__clang__) +# define BROKEN_VALUE_INITIALIZATION +#endif + /* As the last action in this file, we poison the identifiers that shouldn't be used. Note, luckily gcc-3.0's token-based integrated preprocessor won't trip on poisoned identifiers that arrive from |