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The --version-script,asterisk.exports linker flag (and the module exports) didn't provide _IO_stdin_used in the list of exported symbols. That causes some kind of libc compatibility mode to kick in, where stdio file structures (stdout/stderr) land somewhere else. In the case of the Sparc, they landed on misaligned memory. This became apparent first after r376428 (Reorder startup sequence) when a lot of ast_log's were replaced with fprintf's. Writing to stderr triggered a SIGBUS. (Compared to x86 and amd64 architectures, the Sparc is very picky about memory alignment.) (issue ASTERISK-21763) (issue ASTERISK-21665) Reported by: Jeremy Kister Review: https://reviewboard.asterisk.org/r/2760/ ........ Merged revisions 397377 from http://svn.asterisk.org/svn/asterisk/branches/1.8 ........ Merged revisions 397378 from http://svn.asterisk.org/svn/asterisk/branches/11 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@397379 65c4cc65-6c06-0410-ace0-fbb531ad65f3
74 lines
2.3 KiB
Plaintext
74 lines
2.3 KiB
Plaintext
{
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global:
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LINKER_SYMBOL_PREFIXast_*;
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LINKER_SYMBOL_PREFIXbridge_*;
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LINKER_SYMBOL_PREFIXbridge_channel_*;
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LINKER_SYMBOL_PREFIX_ast_*;
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LINKER_SYMBOL_PREFIX__ast_*;
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LINKER_SYMBOL_PREFIXpbx_*;
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LINKER_SYMBOL_PREFIXastman_*;
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LINKER_SYMBOL_PREFIXaco_*;
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LINKER_SYMBOL_PREFIX__aco_*;
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LINKER_SYMBOL_PREFIXao2_*;
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LINKER_SYMBOL_PREFIX__ao2_*;
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LINKER_SYMBOL_PREFIXoption_debug;
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LINKER_SYMBOL_PREFIXoption_verbose;
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LINKER_SYMBOL_PREFIXdahdi_chan_name;
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LINKER_SYMBOL_PREFIXdahdi_chan_name_len;
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LINKER_SYMBOL_PREFIXdahdi_chan_mode;
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LINKER_SYMBOL_PREFIXcallerid_*;
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LINKER_SYMBOL_PREFIXcid_di;
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LINKER_SYMBOL_PREFIXcid_dr;
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LINKER_SYMBOL_PREFIXclidsb;
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LINKER_SYMBOL_PREFIXMD5*;
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LINKER_SYMBOL_PREFIXsched_*;
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LINKER_SYMBOL_PREFIXio_*;
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LINKER_SYMBOL_PREFIXjb_*;
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LINKER_SYMBOL_PREFIXaes_*;
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LINKER_SYMBOL_PREFIXconfig_*;
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LINKER_SYMBOL_PREFIXtdd_*;
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LINKER_SYMBOL_PREFIXterm_*;
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LINKER_SYMBOL_PREFIXchannelreloadreason2txt;
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LINKER_SYMBOL_PREFIXdevstate2str;
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LINKER_SYMBOL_PREFIX__manager_event;
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LINKER_SYMBOL_PREFIXdialed_interface_info;
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LINKER_SYMBOL_PREFIXstrsep;
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LINKER_SYMBOL_PREFIXsetenv;
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LINKER_SYMBOL_PREFIXstasis_*;
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LINKER_SYMBOL_PREFIXunsetenv;
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LINKER_SYMBOL_PREFIXstrcasestr;
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LINKER_SYMBOL_PREFIXstrnlen;
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LINKER_SYMBOL_PREFIXstrndup;
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LINKER_SYMBOL_PREFIXvasprintf;
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LINKER_SYMBOL_PREFIXasprintf;
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LINKER_SYMBOL_PREFIXstrtoq;
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LINKER_SYMBOL_PREFIXgetloadavg;
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LINKER_SYMBOL_PREFIXntohll;
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LINKER_SYMBOL_PREFIXhtonll;
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LINKER_SYMBOL_PREFIXtimersub;
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LINKER_SYMBOL_PREFIXres_srtp;
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LINKER_SYMBOL_PREFIXres_srtp_policy;
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LINKER_SYMBOL_PREFIXsecure_call_info;
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/*
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If _IO_stdin_used is not exported, stdout/stderr may not get
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properly aligned. That causes breakage on some architectures.
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http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=634261#51
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http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=634261#94
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http://lists.gnu.org/archive/html/bug-glibc/2001-12/msg00203.html
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We export the symbol to get proper behaviour. Now printf
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doesn't SIGBUS anymore on the SPARC.
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Michael Karcher wrote on Jan 13, 2013:
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> A build process that mangles the export of _IO_stdin_used is
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> (as defined by the libc ABI, even if not explicitly written
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> down) broken. [...]
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*/
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LINKER_SYMBOL_PREFIX_IO_stdin_used;
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local:
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*;
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};
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