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regex: avoid glibc deadlock during configure glibc has a known bug where certain corruptions of the heap can cause malloc to default to printing a debug message that includes a backtrace, but the act of getting the backtrace uses dlopen which in turn calls into malloc, causing a recursive lock ending in deadlock. Thus, when configure is probing for a known glibc heap corruption bug, the overall configure would hang. The solution suggested by glibc developers is to force malloc to quit printing debug messages, which avoids recursive malloc. * m4/regex.m4 (gl_REGEX): Avoid recursive malloc deadlock when glibc bug 15078 in turn triggers bug 16159. Reported by Michal Privoznik. Signed-off-by: Eric Blake <eblake@redhat.com>
author Eric Blake <eblake@redhat.com>
date Tue, 03 Dec 2013 10:34:13 -0700
parents d9b0d6fe8a27
children
line wrap: on
line source

struct mapping { int standard_name; const char vendor_name[10 + 1]; };
%struct-type
%language=ANSI-C
%define slot-name standard_name
%define hash-function-name mapping_hash
%define lookup-function-name mapping_lookup
%readonly-tables
%global-table
%define word-array-name mappings
%pic
%%
# On OSF/1 5.1, look in /usr/lib/nls/loc/iconv.
ISO-8859-1, "ISO8859-1"
ISO-8859-2, "ISO8859-2"
ISO-8859-3, "ISO8859-3"
ISO-8859-4, "ISO8859-4"
ISO-8859-5, "ISO8859-5"
ISO-8859-6, "ISO8859-6"
ISO-8859-7, "ISO8859-7"
ISO-8859-8, "ISO8859-8"
ISO-8859-9, "ISO8859-9"
ISO-8859-15, "ISO8859-15"
CP437, "cp437"
CP775, "cp775"
CP850, "cp850"
CP852, "cp852"
CP855, "cp855"
CP857, "cp857"
CP861, "cp861"
CP862, "cp862"
CP865, "cp865"
CP866, "cp866"
CP869, "cp869"
CP874, "cp874"
CP949, "KSC5601"
CP1250, "cp1250"
CP1251, "cp1251"
CP1252, "cp1252"
CP1253, "cp1253"
CP1254, "cp1254"
CP1255, "cp1255"
CP1256, "cp1256"
CP1257, "cp1257"
CP1258, "cp1258"
EUC-JP, "eucJP"
EUC-KR, "eucKR"
EUC-TW, "eucTW"
BIG5, "big5"
SHIFT_JIS, "SJIS"
TIS-620, "TACTIS"