Bug #74149 [NEW]: SAPI application linking to PHP static library can't call zend_signal_startup()

From: sathya at laufers dot net Operating system: GNU/Linux PHP version: 7.1.2 Package: Compile Failure Bug Type: Bug Bug description:SAPI application linking to PHP static library can't call zend_signal_startup() Description: ------------ A C++ SAPI application linking to PHP 7.1 compiled as static embedded SAPI library can't compile as the mandatory function "zend_signal_startup()" is not wrapped in 'extern "C" {' and therefore not accessible. This is the same issue as in "Bug #71041". I'm creating a new bug report, because Zend signals are now enabled by default and even with disabling them using "--disable-zend-signals" it doesn't work (see "additional remark"). Regarding the comment in the other bug report: > The only place that this function should be called is in the SAPI layer, since all usable SAPI's are distributed with PHP, there doesn't seem to be a legitimate need to export the symbol. I don't agree. Most people using the static embedded library to integrate PHP into their programs will stumble upon this problem. Additional remark: Using the configure option "--disable-zend-signals" the program compiles but crashes with signal 6 as "zend_signal_activate()" is still being called by "php_request_startup()" - but with uninitialized variables: #0 0x00007f25f672f428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54 #1 0x00007f25f673102a in __GI_abort () at abort.c:89 #2 0x000000000044cb21 in Debug::safe_abort () at DeathHandler.cpp:387 #3 Debug::DeathHandler::HandleSignal (sig=<optimized out>, secret=0x7f25ef19c100) at DeathHandler.cpp:573 #4 <signal handler called> #5 0x000000000069c717 in memcpy (__len=1040, __src=0x12f2720 <global_orig_handlers>, __dest=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/string3.h:53 #6 zend_signal_activate () at /usr/src/user/php-7.1.2/Zend/zend_signal.c:313 #7 0x000000000060309f in php_request_startup () at /usr/src/user/php-7.1.2/main/main.c:1640 Test script: --------------- <?php //Not applicable ?> Expected result: ---------------- Successful linking of PHP 7.1 static embedded library. Actual result: -------------- Error during linking: libscriptengine.a(libscriptengine_a-php_sapi.o): In function `php_xxx_init()': xxx/php_sapi.cpp:1787: undefined reference to `zend_signal_startup()' collect2: error: ld returned 1 exit status make[2]: *** [xxx] Fehler 1 Makefile:635: die Regel für Ziel „xxx“ scheiterte make[1]: *** [all-recursive] Fehler 1 make: *** [all] Fehler 2 -- Edit bug report at https://bugs.php.net/bug.php?id=74149&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=74149&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=74149&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=74149&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=74149&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=74149&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=74149&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=74149&r=needscript Try newer version: https://bugs.php.net/fix.php?id=74149&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=74149&r=support Expected behavior: https://bugs.php.net/fix.php?id=74149&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=74149&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=74149&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=74149&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=74149&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=74149&r=dst IIS Stability: https://bugs.php.net/fix.php?id=74149&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=74149&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=74149&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=74149&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=74149&r=mysqlcfg