Bug 6883

# gdb ft-font-create-for-ft-face ft-font-create-f.core 
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This GDB was configured as "i386--netbsdelf"...
Core was generated by `ft-font-create-f'.
Program terminated with signal 11, Segmentation fault.
#0  0x0818bbc0 in strlen ()
(gdb) where
#0  0x0818bbc0 in strlen ()
#1  0x080b761c in FcStrCopy (s=0x746e6f66 <Address 0x746e6f66 out of bounds>)
    at fcstr.c:37
#2  0x080b56d8 in FcValueSave (v=
        {type = FcTypeString, u = {s = 0x746e6f66 <Address 0x746e6f66 out of
bounds>, i = 1953394534, b = 1953394534, d = -0.1245351108795468, m = 0x746e6f66,
c = 0x746e6f66, f = 0x746e6f66, p = 0x746e6f66, l = 0x746e6f66}}) at fcpat.c:72
#3  0x080b6979 in FcPatternAddWithBinding (p=0x825f0b0, 
    object=0x81d23c4 "family", value=
        {type = FcTypeString, u = {s = 0x746e6f66 <Address 0x746e6f66 out of
bounds>, i = 1953394534, b = 1953394534, d = -0.1245351108795468, m = 0x746e6f66,
c = 0x746e6f66, f = 0x746e6f66, p = 0x746e6f66, l = 0x746e6f66}}, 
    binding=FcValueBindingStrong, append=1) at fcpat.c:753
#4  0x080b6ac8 in FcPatternAdd (p=0x825f0b0, object=0x81d23c4 "family", value=
        {type = FcTypeString, u = {s = 0x746e6f66 <Address 0x746e6f66 out of
bounds>, i = 1953394534, b = 1953394534, d = -0.1245351108795468, m = 0x746e6f66,
c = 0x746e6f66, f = 0x746e6f66, p = 0x746e6f66, l = 0x746e6f66}}, append=1)
    at fcpat.c:805
#5  0x080b6cf3 in FcPatternAddString (p=0x825f0b0, object=0x81d23c4 "family", 
    s=0x746e6f66 <Address 0x746e6f66 out of bounds>) at fcpat.c:890
#6  0x0805ff57 in _cairo_ft_scaled_font_create_toy (toy_face=0x81d10e0, 
    font_matrix=0xbfbfe3d0, ctm=0xbfbfe3a0, options=0x825f090, font=0xbfbfe29c)
    at cairo-ft-font.c:1566
---Type <return> to continue, or q <return> to quit--- 
#7  0x0804d083 in _cairo_toy_font_face_scaled_font_create (
    abstract_font_face=0x81d10e0, font_matrix=0xbfbfe3d0, ctm=0xbfbfe3a0, 
    options=0x825f090, scaled_font=0xbfbfe29c) at cairo-font.c:407
#8  0x0804d548 in cairo_scaled_font_create (font_face=0x81d10e0, 
    font_matrix=0xbfbfe3d0, ctm=0xbfbfe3a0, options=0x825f090)
    at cairo-font.c:725
#9  0x080483a1 in draw (cr=0x82740c0, width=0, height=0)
    at ft-font-create-for-ft-face.c:61
#10 0x08048aac in cairo_test_for_target (test=0x824a010, 
    draw=0x8048328 <draw>, target=0xbfbfe4b0) at cairo-test.c:483
#11 0x08048c98 in cairo_test_expecting (test=0x824a010, draw=0x8048328 <draw>, 
    expectation=CAIRO_TEST_SUCCESS) at cairo-test.c:575
#12 0x08048dce in cairo_test (test=0x824a010, draw=0x8048328 <draw>)
    at cairo-test.c:620
#13 0x0804849f in main () at ft-font-create-for-ft-face.c:101
#14 0x08048166 in ___start ()
(gdb) 

Note that 1.0.4 also suffers many similar problems on NetBSD/i386-3.0:

/usr/bin/make  check-TESTS

a8-mask is expected to fail:
        image backend fails because libpixman only handles (stride %
sizeof(pixman_bits) == 0)
a8-mask-image:  XFAIL
a8-mask-xlib:   UNTESTED
FAIL: a8-mask

caps-joins-image:       PASS
caps-joins-xlib:        UNTESTED
PASS: caps-joins

caps-sub-paths-image:   PASS
caps-sub-paths-xlib:    UNTESTED
PASS: caps-sub-paths

clip-all-image: PASS
clip-all-xlib:  UNTESTED
PASS: clip-all

clip-nesting-image:     PASS
clip-nesting-xlib:      UNTESTED
PASS: clip-nesting

clip-operator: Error detected by libpthread: Unlocking unlocked mutex.
Detected by file
"/home/builds/ab/netbsd-3-0-RELEASE/src/lib/libpthread/pthread_mutex.c", line
362, function "pthread_mutex_unlock".
See pthread(3) for information.
FAIL: clip-operator

clip-twice-image:       PASS
clip-twice-xlib:        UNTESTED
PASS: clip-twice

composite-integer-translate-source-image:       PASS
composite-integer-translate-source-xlib:        UNTESTED
PASS: composite-integer-translate-source

composite-integer-translate-over-image: PASS
composite-integer-translate-over-xlib:  UNTESTED
PASS: composite-integer-translate-over

composite-integer-translate-over-repeat-image:  PASS
composite-integer-translate-over-repeat-xlib:   UNTESTED
PASS: composite-integer-translate-over-repeat

create-from-png-image:  PASS
create-from-png-xlib:   UNTESTED
PASS: create-from-png

create-from-png-stream-image:   PASS
create-from-png-stream-xlib:    UNTESTED
PASS: create-from-png-stream

dash-caps-joins-image:  PASS
dash-caps-joins-xlib:   UNTESTED
PASS: dash-caps-joins

dash-offset-negative-image:     PASS
dash-offset-negative-xlib:      UNTESTED
PASS: dash-offset-negative

fill-and-stroke-image:  PASS
fill-and-stroke-xlib:   UNTESTED
PASS: fill-and-stroke

fill-rule-image:        PASS
fill-rule-xlib: UNTESTED
PASS: fill-rule

filter-nearest-offset is expected to fail:
        wrong sampling location for nearest-neighbor filter in libpixman and
Render
filter-nearest-offset-image:    XFAIL
filter-nearest-offset-xlib:     UNTESTED
FAIL: filter-nearest-offset

get-and-set-image:      PASS
get-and-set-xlib:       UNTESTED
PASS: get-and-set

gradient-alpha-image:   PASS
gradient-alpha-xlib:    UNTESTED
PASS: gradient-alpha

leaky-polygon-image:    PASS
leaky-polygon-xlib:     UNTESTED
PASS: leaky-polygon

line-width-image:       PASS
line-width-xlib:        UNTESTED
PASS: line-width

linear-gradient-image:  PASS
linear-gradient-xlib:   UNTESTED
PASS: linear-gradient

mask-image:     PASS
mask-xlib:      UNTESTED
PASS: mask

mask-ctm-image: PASS
mask-ctm-xlib:  UNTESTED
PASS: mask-ctm

mask-surface-ctm-image: PASS
mask-surface-ctm-xlib:  UNTESTED
PASS: mask-surface-ctm

move-to-show-surface-image:     PASS
move-to-show-surface-xlib:      UNTESTED
PASS: move-to-show-surface

nil-surface-image:      PASS
nil-surface-xlib:       UNTESTED
PASS: nil-surface

operator-clear: Error detected by libpthread: Unlocking unlocked mutex.
Detected by file
"/home/builds/ab/netbsd-3-0-RELEASE/src/lib/libpthread/pthread_mutex.c", line
362, function "pthread_mutex_unlock".
See pthread(3) for information.
FAIL: operator-clear

operator-source: Error detected by libpthread: Unlocking unlocked mutex.
Detected by file
"/home/builds/ab/netbsd-3-0-RELEASE/src/lib/libpthread/pthread_mutex.c", line
362, function "pthread_mutex_unlock".
See pthread(3) for information.
FAIL: operator-source

paint-image:    PASS
paint-xlib:     UNTESTED
PASS: paint

paint-with-alpha-image: PASS
paint-with-alpha-xlib:  UNTESTED
PASS: paint-with-alpha

path-data-image:        PASS
path-data-xlib: UNTESTED
PASS: path-data

pixman-rotate is expected to fail:
        known off-by-one bug when rotating a pixman image
pixman-rotate-image:    XFAIL
pixman-rotate-xlib:     UNTESTED
FAIL: pixman-rotate

rectangle-rounding-error-image: PASS
rectangle-rounding-error-xlib:  UNTESTED
PASS: rectangle-rounding-error

scale-source-surface-paint-image:       PASS
scale-source-surface-paint-xlib:        UNTESTED
PASS: scale-source-surface-paint

select-font-no-show-text-image: PASS
select-font-no-show-text-xlib:  UNTESTED
PASS: select-font-no-show-text

self-copy-image:        PASS
self-copy-xlib: UNTESTED
PASS: self-copy

self-intersecting is expected to fail:
        Self-intersecting strokes are wrong due to incremental trapezoidization.
self-intersecting-image:        XFAIL
self-intersecting-xlib: UNTESTED
FAIL: self-intersecting

set-source-image:       PASS
set-source-xlib:        UNTESTED
PASS: set-source

show-glyphs-many: Error detected by libpthread: Unlocking unlocked mutex.
Detected by file
"/home/builds/ab/netbsd-3-0-RELEASE/src/lib/libpthread/pthread_mutex.c", line
362, function "pthread_mutex_unlock".
See pthread(3) for information.
FAIL: show-glyphs-many

show-text-current-point: Error detected by libpthread: Unlocking unlocked mutex.
Detected by file
"/home/builds/ab/netbsd-3-0-RELEASE/src/lib/libpthread/pthread_mutex.c", line
362, function "pthread_mutex_unlock".
See pthread(3) for information.
FAIL: show-text-current-point

source-clip-image:      PASS
source-clip-xlib:       UNTESTED
PASS: source-clip

source-surface-scale-paint-image:       PASS
source-surface-scale-paint-xlib:        UNTESTED
PASS: source-surface-scale-paint

surface-finish-twice-image:     PASS
surface-finish-twice-xlib:      UNTESTED
PASS: surface-finish-twice

surface-pattern-image:  PASS
surface-pattern-xlib:   UNTESTED
PASS: surface-pattern

text-antialias-gray: Error detected by libpthread: Unlocking unlocked mutex.
Detected by file
"/home/builds/ab/netbsd-3-0-RELEASE/src/lib/libpthread/pthread_mutex.c", line
362, function "pthread_mutex_unlock".
See pthread(3) for information.
FAIL: text-antialias-gray

text-antialias-none: Error detected by libpthread: Unlocking unlocked mutex.
Detected by file
"/home/builds/ab/netbsd-3-0-RELEASE/src/lib/libpthread/pthread_mutex.c", line
362, function "pthread_mutex_unlock".
See pthread(3) for information.
FAIL: text-antialias-none

text-antialias-subpixel: Error detected by libpthread: Unlocking unlocked mutex.
Detected by file
"/home/builds/ab/netbsd-3-0-RELEASE/src/lib/libpthread/pthread_mutex.c", line
362, function "pthread_mutex_unlock".
See pthread(3) for information.
FAIL: text-antialias-subpixel

text-cache-crash: Error detected by libpthread: Unlocking unlocked mutex.
Detected by file
"/home/builds/ab/netbsd-3-0-RELEASE/src/lib/libpthread/pthread_mutex.c", line
362, function "pthread_mutex_unlock".
See pthread(3) for information.
FAIL: text-cache-crash

text-pattern: Error detected by libpthread: Unlocking unlocked mutex.
Detected by file
"/home/builds/ab/netbsd-3-0-RELEASE/src/lib/libpthread/pthread_mutex.c", line
362, function "pthread_mutex_unlock".
See pthread(3) for information.
FAIL: text-pattern

text-rotate is expected to fail:
        minor bugs in positioning rotated glyphs
text-rotate: Error detected by libpthread: Unlocking unlocked mutex.
Detected by file
"/home/builds/ab/netbsd-3-0-RELEASE/src/lib/libpthread/pthread_mutex.c", line
362, function "pthread_mutex_unlock".
See pthread(3) for information.
XFAIL: text-rotate

transforms-image:       PASS
transforms-xlib:        UNTESTED
PASS: transforms

translate-show-surface-image:   PASS
translate-show-surface-xlib:    UNTESTED
PASS: translate-show-surface

trap-clip-image:        PASS
trap-clip-xlib: UNTESTED
PASS: trap-clip

unantialiased-shapes-image:     PASS
unantialiased-shapes-xlib:      UNTESTED
PASS: unantialiased-shapes

unbounded-operator: Error detected by libpthread: Unlocking unlocked mutex.
Detected by file
"/home/builds/ab/netbsd-3-0-RELEASE/src/lib/libpthread/pthread_mutex.c", line
362, function "pthread_mutex_unlock".
See pthread(3) for information.
FAIL: unbounded-operator
PASS: user-data

rel-path-image: PASS
rel-path-xlib:  UNTESTED
PASS: rel-path
pthread-show-text: Error detected by libpthread: Unlocking unlocked mutex.
Detected by file
"/home/builds/ab/netbsd-3-0-RELEASE/src/lib/libpthread/pthread_mutex.c", line
362, function "pthread_mutex_unlock".
See pthread(3) for information.
FAIL: pthread-show-text

ft-font-create-for-ft-face: Error detected by libpthread: Unlocking unlocked
mutex.
Detected by file
"/home/builds/ab/netbsd-3-0-RELEASE/src/lib/libpthread/pthread_mutex.c", line
362, function "pthread_mutex_unlock".
See pthread(3) for information.
FAIL: ft-font-create-for-ft-face

pdf-surface: Please check pdf-surface.pdf to make sure it looks happy.
PASS: pdf-surface

pdf-surface: Please check pdf-clip.pdf to make sure it looks happy.
PASS: pdf-clip

ps-surface: Please check ps-surface.ps to make sure it looks happy.
PASS: ps-surface

PASS: xlib-surface
========================================================================
17 of 64 tests failed
Please report to http://bugs.freedesktop.org/enter_bug.cgi?product=cairo
========================================================================

The locking has since been completely revamped (a few times in fact). The last time I ran cairo with a lock debugger it did not generate any warning. However, if you have any fresh reports of warnings, please do report them. Thanks.