Re: Apache segmentation fault when loading libphp7.so

On 13.08.2020 at 13:47, Kai Fürstenberg wrote: > Am 13.08.2020 um 12:53 schrieb Christoph M. Becker: > >> On 13.08.2020 at 11:52, Kai Fürstenberg wrote: >> >>> Am 13.08.2020 um 10:31 schrieb Christoph M. Becker: >>> >>>> On 12.08.2020 at 18:09, Kai Fürstenberg wrote: >>>> >>>>> Hello everybody, >>>>> >>>>> and thank you for you help so far. >>>>> >>>>> I played around with gdb a little bit. >>>>> >>>>> I re-configured php the way I did in 7.2 (just with some slight >>>>> modifications), to use mysql, gd and some other things. >>>>> >>>>> But this time, httpd stops with >>>>> >>>>> Program received signal SIGSEGV, Segmentation fault. >>>>> resolve_stripslashes () at >>>>> /usr/src/apache_testing/php-7.4.9/Zend/zend_cpuinfo.h:157 >>>>> 157             __builtin_cpu_init(); >>>>> >>>>> Before I had the fault >>>>> >>>>> #0  resolve_base64_decode () at >>>>> /usr/src/apache_testing/php-7.4.9/Zend/zend_cpuinfo.h:141 >>>>> >>>>> Line 141 of zend_cpuinfo.h is the very same command >>>>> __builtin_cpu_init() >>>>> >>>>> It seems, that exactly this command __builtin_cpu_init() fails for some >>>>> reason... >>>> >>>> Did you check config.log? There is a test for __builtin_cpu_init() >>>> availability[1] which apparently succeeds on your system, but it's worth >>>> to actually look that up in config.log. Maybe this test should use >>>> AC_RUN_IFELSE instead of AC_LINK_IFELSE (and have the then and else >>>> branch of the ternary operator swapped)? >>>> >>>> [1] >>>> >>>> <https://github.com/php/php-src/blob/php-7.3.21/acinclude.m4#L3261-L3278> >>> >>> config.log: >>> configure:13702: checking for __builtin_cpu_init >>> configure:13718: cc -o conftest -g -O2 -fvisibility=hidden -pthread >>> -D_REENTRANT conftest.c -lm -ldl -lpthread >&5 >>> configure:13718: $? = 0 >>> configure:13721: result: yes >>> configure:13741: checking for __builtin_cpu_supports >>> configure:13757: cc -o conftest -g -O2 -fvisibility=hidden -pthread >>> -D_REENTRANT conftest.c -lm -ldl -lpthread >&5 >>> configure:13757: $? = 0 >>> configure:13760: result: yes >>> >>> I just don't understand what you mean with the link... >> >> I basically suggested to apply >> >> <https://gist.github.com/cmb69/3fd0106ce78446c9e10e54eec21a4d82>, >> and to >> run ./configure again. Would the result still be "yes"? > > OK, so far so good. > > I just wonder, which file you want me to patch, because my acinclude.m4 > (in Zend subfolder, v7.3) only has about 200 lines (the mentioned part > is missing in this file) and in 7.4 this file is completely missing... The patch is about acinclude.m4 in the toplevel folder: <https://github.com/php/php-src/blob/php-7.3.21/acinclude.m4>. -- Christoph M. Becker