diff options
| author | Bram Moolenaar <Bram@vim.org> | 2021-02-25 17:17:56 +0100 |
|---|---|---|
| committer | Bram Moolenaar <Bram@vim.org> | 2021-02-25 17:17:56 +0100 |
| commit | 0e62a6742bca186624e97e2121c98ada30e009a0 (patch) | |
| tree | 563c0f5cfa22a827bc37c5ef37c0d34863da9da1 /src/os_unix.c | |
| parent | 1bd3cb201983859d86d644eef9e98cd3e9de7261 (diff) | |
| download | vim-git-0e62a6742bca186624e97e2121c98ada30e009a0.tar.gz | |
patch 8.2.2550: signal stack size is wrong with latest glibc 2.34v8.2.2550
Problem: Signal stack size is wrong with latest glibc 2.34.
Solution: Use sysconf(_SC_SIGSTKSZ) if available. (Zdenek Dohnal, closes
#7895)
Diffstat (limited to 'src/os_unix.c')
| -rw-r--r-- | src/os_unix.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/os_unix.c b/src/os_unix.c index 1edc7e66b..1c8079917 100644 --- a/src/os_unix.c +++ b/src/os_unix.c @@ -783,7 +783,7 @@ mch_stackcheck(char *p) * completely full. */ -#ifndef SIGSTKSZ +#if !defined SIGSTKSZ && !defined(HAVE_SYSCONF_SIGSTKSZ) # define SIGSTKSZ 8000 // just a guess of how much stack is needed... #endif @@ -806,13 +806,21 @@ init_signal_stack(void) # else sigstk.ss_sp = signal_stack; # endif +# ifdef HAVE_SYSCONF_SIGSTKSZ + sigstk.ss_size = sysconf(_SC_SIGSTKSZ); +# else sigstk.ss_size = SIGSTKSZ; +# endif sigstk.ss_flags = 0; (void)sigaltstack(&sigstk, NULL); # else sigstk.ss_sp = signal_stack; if (stack_grows_downwards) +# ifdef HAVE_SYSCONF_SIGSTKSZ + sigstk.ss_sp += sysconf(_SC_SIGSTKSZ) - 1; +# else sigstk.ss_sp += SIGSTKSZ - 1; +# endif sigstk.ss_onstack = 0; (void)sigstack(&sigstk, NULL); # endif @@ -3261,7 +3269,11 @@ mch_early_init(void) * Ignore any errors. */ #if defined(HAVE_SIGALTSTACK) || defined(HAVE_SIGSTACK) +# ifdef HAVE_SYSCONF_SIGSTKSZ + signal_stack = alloc(sysconf(_SC_SIGSTKSZ)); +# else signal_stack = alloc(SIGSTKSZ); +# endif init_signal_stack(); #endif } |