Re: [platform-swt-dev] SWT produce a VM failure on a GC.getFontMetrics()

[Arnaud De Muyser <ademuyser@xxxxxxxxxx>]

Seek in it before sent mail .... Sorry.

This is due to the following situation:

Font font = new Font( ... );
gc.setFont( font );
font.dispose();
gc.getFontMetrics() => core.

The right think is to not dispose font
after set it in a gc ...

Arnaud De Muyser/France/IBM@IBMFR
Sent by: platform-swt-dev-admin@xxxxxxxxxxx

10/08/2004 02:37 PM

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Subject	[platform-swt-dev] SWT produce a VM failure on a GC.getFontMetrics() call.

Does anyone have already seen this kind of joke ? 
Using Eclipse SDK 3.0.1 on a Linux Suse. 
Thanks for your help. 
Arnaud. 


** (<unknown>:668): CRITICAL **: file pango-fontmap.c: line 126 (pango_font_map_load_fontset):
assertion `pango_font_description_get_family (desc) != NULL' failed

** (<unknown>:668): CRITICAL **: file pango-fontset.c: line 101 (pango_fontset_get_metrics):
assertion `fontset != NULL' failed 

(<unknown>:668): GLib-GObject-CRITICAL **: file gobject.c: line 1337
(g_object_unref): assertion `G_IS_OBJECT (object)' failed

** (<unknown>:668): CRITICAL **: file fonts.c: line 1206 (pango_font_metrics_get_ascent):
assertion `metrics != NULL' failed 

** (<unknown>:668): CRITICAL **: file fonts.c: line 1226 (pango_font_metrics_get_descent):
assertion `metrics != NULL' failed 

** (<unknown>:668): CRITICAL **: file fonts.c: line 1245 (pango_font_metrics_get_approximate_char_width):
assertion `metrics != NULL' failed 

** (<unknown>:668): CRITICAL **: file fonts.c: line 1182 (pango_font_metrics_unref):
assertion `metrics != NULL' failed 

** (<unknown>:668): CRITICAL **: file pango-fontmap.c: line 126 (pango_font_map_load_fontset):
assertion `pango_font_description_get_family (desc) != NULL' failed

** (<unknown>:668): CRITICAL **: file pango-fontset.c: line 101 (pango_fontset_get_metrics):
assertion `fontset != NULL' failed 

(<unknown>:668): GLib-GObject-CRITICAL **: file gobject.c: line 1337
(g_object_unref): assertion `G_IS_OBJECT (object)' failed

** (<unknown>:668): CRITICAL **: file fonts.c: line 1206 (pango_font_metrics_get_ascent):
assertion `metrics != NULL' failed 

** (<unknown>:668): CRITICAL **: file fonts.c: line 1226 (pango_font_metrics_get_descent):
assertion `metrics != NULL' failed 

** (<unknown>:668): CRITICAL **: file fonts.c: line 1245 (pango_font_metrics_get_approximate_char_width):
assertion `metrics != NULL' failed 

** (<unknown>:668): CRITICAL **: file fonts.c: line 1182 (pango_font_metrics_unref):
assertion `metrics != NULL' failed 

An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : 11 occurred at PC=0x400E49DF 
Function=strlen+0xF 
Library=/lib/libc.so.6 

Current Java thread: 
        at org.eclipse.swt.internal.gtk.OS.pango_context_get_metrics(Native
Method) 
        - locked <0x4831db20> (a java.lang.Class)
        at org.eclipse.swt.graphics.GC.getFontMetrics(GC.java:1472)
                at ....

and Sun's VM (1.4.2) produce a core file ...