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Merge "ARM: warn about atexit() calls from legacy shared libraries"

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Elliott Hughes 2012-09-05 10:18:43 -07:00 committed by android code review
commit b2c5bd543d
1 changed files with 14 additions and 0 deletions
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14
libc/arch-arm/bionic/atexit_legacy.c
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@ -27,6 +27,8 @@
*/ */
#include <sys/types.h> #include <sys/types.h>
#include <private/logd.h>
#include <stdio.h>
/* /*
* This source file should only be included by libc.so, its purpose is * This source file should only be included by libc.so, its purpose is
@ -42,5 +44,17 @@ extern int __cxa_atexit(void (*func)(void *), void *arg, void *dso);
int int
atexit(void (*func)(void)) atexit(void (*func)(void))
{ {
/*
* Exit functions queued by this version of atexit will not be called
* on dlclose(), and when they are called (at program exit), the
* calling library may have been dlclose()'d, causing the program to
* crash.
*/
static char const warning[] =
"WARNING: generic atexit() called from legacy shared library\n";
__libc_android_log_print(ANDROID_LOG_WARN, "libc", warning);
fprintf(stderr, warning);
return (__cxa_atexit((void (*)(void *))func, NULL, NULL)); return (__cxa_atexit((void (*)(void *))func, NULL, NULL));
} }