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[2009-08-07 17:14 UTC] th at drillich dot com
Description:
------------
In gd_compat.[hc]
gdJpegGetVersionString() is declared as returning int not const
char*, but sizeof(int) != sizeof(const char*) on some systems like
here sizeof(int) == 4 and sizeof(const char*) == 8.
this causes a segfault on phpinfo().
cu thomas
Actual result:
--------------
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f996e9c3740 (LWP 17235)]
strlen () at ../sysdeps/x86_64/strlen.S:48
48 ../sysdeps/x86_64/strlen.S: No such file or directory.
in ../sysdeps/x86_64/strlen.S
Current language: auto; currently asm
(gdb) bt
#0 strlen () at ../sysdeps/x86_64/strlen.S:48
#1 0x00007f9969a207c8 in format_converter (odp=0x7fff76a001f0,
fmt=0x7f9964f364d0 "s", ap=0x7fff76a00150) at
src/php5/php5-5.3.0/main/snprintf.c:964
#2 0x00007f9969a213ac in strx_printv (ccp=0x7fff76a0020c,
buf=0x7f996e9c36f0 "(X\206n\231\177", len=1990197800,
format=0x7f9964f364cf "%s", ap=0x0)
at src/php5/php5-5.3.0/main/snprintf.c:1211
#3 0x00007f9969a21554 in ap_php_snprintf (buf=0x7fff76a002db "",
len=1855731440, format=0x0) at
src/php5/php5-5.3.0/main/snprintf.c:1256
#4 0x00007f9964f32b44 in zm_info_gd (zend_module=0x13c2bb0) at
src/php5/php5-5.3.0/ext/gd/gd.c:1296
#5 0x00007f99699c06e0 in _display_module_info_func
(module=0x64f37878) at src/php5/php5-5.3.0/ext/standard/info.c:123
#6 0x00007f9969a7c6d5 in zend_hash_apply (ht=0x7fff76a00520,
apply_func=0x7f99699c06d0 <_display_module_info_func>)
at src/php5/php5-5.3.0/Zend/zend_hash.c:673
#7 0x00007f99699c1a5a in php_print_info (flag=32767) at
src/php5/php5-5.3.0/ext/standard/info.c:903
#8 0x00007f99699c1e61 in zif_phpinfo (ht=1693677688,
return_value=0x130f858, return_value_ptr=0x7fff76a00228,
this_ptr=0x0, return_value_used=-16843009)
at src/php5/php5-5.3.0/ext/standard/info.c:1217
#9 0x00007f9969ac1e5b in zend_do_fcall_common_helper_SPEC
(execute_data=0x7f996a17c580) at
src/php5/php5-5.3.0/Zend/zend_vm_execute.h:313
#10 0x00007f9969a9b299 in execute (op_array=0x130eea8) at
src/php5/php5-5.3.0/Zend/zend_vm_execute.h:104
#11 0x00007f9969a700c1 in zend_execute_scripts (type=0,
retval=0x7fff76a00770, file_count=3) at
src/php5/php5-5.3.0/Zend/zend.c:1188
#12 0x00007f9969a1c805 in php_execute_script (primary_file=Cannot
access memory at address 0x8000769ff690
) at src/php5/php5-5.3.0/main/main.c:2196
#13 0x00007f9969afa775 in php_handler (r=0x43c055) at
src/php5/php5-5.3.0/sapi/apache2handler/sapi_apache2.c:663
#14 0x000000000043b8d3 in ap_run_handler ()
#15 0x000000000043ee9f in ap_invoke_handler ()
#16 0x000000000044c11e in ap_process_request ()
#17 0x0000000000449158 in ?? ()
#18 0x0000000000442dd3 in ap_run_process_connection ()
#19 0x0000000000450720 in ?? ()
#20 0x0000000000450a38 in ?? ()
#21 0x0000000000451050 in ap_mpm_run ()
#22 0x0000000000428425 in main ()
(gdb)
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Here's the patch which fixes the bug: --- php5-5.3.0/ext/gd/libgd/gd_compat.hgdJpegGetVersionString_returnsInt 2009-08-07 19:09:40.000000000 +0200 +++ php5-5.3.0/ext/gd/libgd/gd_compat.h 2009-08-07 19:09:54.000000000 +0200 @@ -8,7 +8,7 @@ #endif const char * gdPngGetVersionString(); -int gdJpegGetVersionString(); +const char * gdJpegGetVersionString(); int gdJpegGetVersionInt(); int overflow2(int a, int b); --- php5-5.3.0/ext/gd/libgd/gd_compat.c.gdJpegGetVersionString_returnsInt 2009-08-07 19:09:07.000000000 +0200 +++ php5-5.3.0/ext/gd/libgd/gd_compat.c 2009-08-07 19:10:11.000000000 +0200 @@ -14,7 +14,7 @@ return JPEG_LIB_VERSION; } -int gdJpegGetVersionString() +const char * gdJpegGetVersionString() { switch(JPEG_LIB_VERSION) { case 62: