crash when loading preview of cf player module

[roberChen]

I've encountered with this bug too many times. When I perform a text search on modules, it will likely to crash (I want to search filter and when I typed f it will crash ).
console output:

[29.248 info Window.cpp:73 loadFile] Loaded font /usr/lib/lv2/CardinalSynth.lv2/resources/cf/Segment7Standard.ttf
[29.313 info Window.cpp:73 loadFile] Loaded font /usr/lib/lv2/CardinalSynth.lv2/resources/cf/LEDCalculator.ttf
/usr/include/c++/11.1.0/bits/basic_string.h:1045: std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::reference std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator[](std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::reference = char&; std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type = long unsigned int]: Assertion '__pos <= size()' failed.
[1]    137552 abort (core dumped)  ardour6

cardinal plugin load info starts with:

[0.000 info CardinalPlugin.cpp:137 Initializer] Cardinal LV2 v2.0
[0.000 info CardinalPlugin.cpp:138 Initializer] Linux 5.15.7-1-MANJARO #1 SMP PREEMPT Wed Dec 8 10:09:19 UTC 2021 x86_64
[0.000 info CardinalPlugin.cpp:139 Initializer] Binary filename: /usr/lib/lv2/CardinalSynth.lv2/CardinalSynth.so
[0.000 info CardinalPlugin.cpp:140 Initializer] Bundle path: /usr/lib/lv2/CardinalSynth.lv2/
[0.000 info CardinalPlugin.cpp:141 Initializer] System directory: /usr/lib/lv2/CardinalSynth.lv2//resources
[0.000 info CardinalPlugin.cpp:142 Initializer] User directory: /usr/lib/lv2/CardinalSynth.lv2//resources
[0.000 info CardinalPlugin.cpp:143 Initializer] Template patch: /usr/lib/lv2/CardinalSynth.lv2/resources/template.vcv

using Ardour6.9.0 (built using 6.9 and GCC version 11.1.0), and cardinal-git Version : r451.353594a-1

note that this bug has been existing at least several days, with many rebuilt to sync with newest version. Also, I was using pipewire-alsa but I think this is noting related to it.

[falkTX]

I fixed some conflicts that were happening today, so I think this is fixed now.
a full rebuild is needed.

[falkTX]

worth trying with the standalone too, since you are building it yourself.
should be easier to get more info about it that way

[roberChen]

coredump backtrace:

(gdb) bt -full 
#0  0x00007f03fa057d22 in raise () at /usr/lib/libc.so.6
#1  0x00007f03fa041862 in abort () at /usr/lib/libc.so.6
#2  0x000055f0b880c00a in std::__replacement_assert(char const*, int, char const*, char const*)
    (__file=__file@entry=0x55f0b9a7a408 "/usr/include/c++/11.1.0/bits/basic_string.h", __line=__line@entry=1045, __function=__function@entry=0x55f0b9a7a250 "std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::reference std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator[](std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type) [with _Ch"..., __condition=__condition@entry=0x55f0b9a77c2f "__pos <= size()") at /usr/include/c++/11.1.0/x86_64-pc-linux-gnu/bits/c++config.h:504
#3  0x000055f0b8fd0800 in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator[](unsigned long) (this=0x7ffd2525b5c0, __pos=12)
    at /usr/include/c++/11.1.0/bits/basic_string.h:1041
        i = <optimized out>
        font = std::shared_ptr<rack::window::Font> (use count 2, weak count 0) = {get() = 0x55f0bf970690}
        fD = "load sample"
        to_display = "load sample"
#4  std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator[](unsigned long) (__pos=12, this=0x7ffd2525b5c0) at /usr/include/c++/11.1.0/bits/basic_string.h:1041
        i = <optimized out>
        font = std::shared_ptr<rack::window::Font> (use count 2, weak count 0) = {get() = 0x55f0bf970690}
        fD = "load sample"
        to_display = "load sample"
#5  PLAYDisplay::drawLayer(rack::widget::Widget::DrawArgs const&, int) (this=0x55f0bf204e60, args=..., layer=1) at cf/src/PLAY.cpp:254
        i = <optimized out>
        font = std::shared_ptr<rack::window::Font> (use count 2, weak count 0) = {get() = 0x55f0bf970690}
        fD = "load sample"
        to_display = "load sample"
#6  0x000055f0b96faa99 in rack::widget::Widget::drawChild(rack::widget::Widget*, rack::widget::Widget::DrawArgs const&, int)
    (this=this@entry=0x55f0bf204350, child=child@entry=0x55f0bf204e60, args=..., layer=layer@entry=1) at Rack/src/widget/Widget.cpp:319
        childArgs = {vg = 0x55f0bda84160, clipBox = {pos = {x = 0, y = 0}, size = {x = 12, y = 127}}, fb = 0x55f0bf956460}
#7  0x000055f0b96fac85 in rack::widget::Widget::drawLayer(rack::widget::Widget::DrawArgs const&, int) (this=0x55f0bf204350, args=..., layer=1) at Rack/src/widget/Widget.cpp:295
        child = 0x55f0bf204e60
        __for_range = 
          std::__cxx11::list = {[0] = 0x55f0bf204bf0, [1] = 0x55f0bf204e60, [2] = 0x55f0bf204ee0, [3] = 0x55f0bf2057a0, [4] = 0x55f0bf202270, [5] = 0x55f0bf205d00, [6] = 0x55f0bf205f80, [7] = 0x55f0bf206240, [8] = 0x55f0bf207270}
#8  0x000055f0b96faa99 in rack::widget::Widget::drawChild(rack::widget::Widget*, rack::widget::Widget::DrawArgs const&, int)
    (this=this@entry=0x55f0bf2042e0, child=child@entry=0x55f0bf204350, args=..., layer=layer@entry=1) at Rack/src/widget/Widget.cpp:319
        childArgs = {vg = 0x55f0bda84160, clipBox = {pos = {x = 0, y = 0}, size = {x = 30, y = 380}}, fb = 0x55f0bf956460}
#9  0x000055f0b96fac85 in rack::widget::Widget::drawLayer(rack::widget::Widget::DrawArgs const&, int) (this=0x55f0bf2042e0, args=..., layer=1) at Rack/src/widget/Widget.cpp:295
        child = 0x55f0bf204350
        __for_range = std::__cxx11::list = {[0] = 0x55f0bf204350}
#10 0x000055f0b96faa5c in rack::widget::Widget::drawChild(rack::widget::Widget*, rack::widget::Widget::DrawArgs const&, int)
    (this=this@entry=0x55f0bf2041f0, child=child@entry=0x55f0bf2042e0, args=..., layer=layer@entry=0) at Rack/src/widget/Widget.cpp:311
        childArgs = {vg = 0x55f0bda84160, clipBox = {pos = {x = 0, y = 0}, size = {x = 30, y = 380}}, fb = 0x55f0bf956460}
#11 0x000055f0b96fab8c in rack::widget::Widget::draw(rack::widget::Widget::DrawArgs const&) (this=this@entry=0x55f0bf2041f0, args=...) at Rack/src/widget/Widget.cpp:280
        child = 0x55f0bf2042e0
        __for_range = std::__cxx11::list = {[0] = 0x55f0bf2042e0}
#12 0x000055f0b96f801a in rack::widget::FramebufferWidget::drawFramebuffer() (this=0x55f0bf2041f0) at Rack/src/widget/FramebufferWidget.cpp:287
        vg = 0x55f0bda84160
        pixelRatio = <optimized out>
        args = {vg = 0x55f0bda84160, clipBox = {pos = {x = 0, y = 0}, size = {x = inf, y = inf}}, fb = 0x55f0bf956460}
#13 0x000055f0b96f8b82 in rack::widget::FramebufferWidget::render(rack::math::Vec, rack::math::Vec, rack::math::Rect) (this=0x55f0bf2041f0, scale=..., offsetF=..., clipBox=...)
    at Rack/src/widget/FramebufferWidget.cpp:241
        fb = 0x55f0bf954620
        oversampledFbSize = {x = 30, y = 380}
        oversampledFb = 0x55f0bf956460
        paint = 
--Type <RET> for more, q to quit, c to continue without paging--
          {xform = {1.4374255e-16, 4.59135442e-41, 0, 0, 0.5, 0}, extent = {0, 0}, radius = 5.60519386e-45, feather = 0, innerColor = {{rgba = {-1.84455938e+35, 4.55632196e-41, 0, 0}, {r = -1.84455938e+35, g = 4.55632196e-41, b = 0, a = 0}}}, outerColor = {{rgba = {-0.626006126, 3.08285662e-41, 1.43746785e-16, 4.59135442e-41}, {r = -0.626006126, g = 3.08285662e-41, b = 1.43746785e-16, a = 4.59135442e-41}}}, image = -1184361338}
        vg = <optimized out>
        fbVg = 0x55f0bda84160
        localBox = {pos = {x = <optimized out>, y = <optimized out>}, size = {x = <optimized out>, y = <optimized out>}}
        pixelRatio = <optimized out>
        newFbSize = {x = <optimized out>, y = <optimized out>}
        __FUNCTION__ = "render"
#14 0x000055f0b96f9324 in rack::widget::FramebufferWidget::draw(rack::widget::Widget::DrawArgs const&) (this=0x55f0bf2041f0, args=...) at Rack/src/widget/FramebufferWidget.cpp:125
        xform = {0.5, 0, 0, 0.5, 1832, 83}
        __FUNCTION__ = "draw"
        scale = {x = <optimized out>, y = <optimized out>}
        offsetI = {x = 1832, y = 83}
        offsetF = {x = <optimized out>, y = <optimized out>}
        offsetFDelta = {x = <optimized out>, y = <optimized out>}
        scaleRatio = {x = <optimized out>, y = <optimized out>}
        paint = 
          {xform = {1, 0, -0, 1, 1754, 83}, extent = {68, 190}, radius = 0, feather = 0, innerColor = {{rgba = {-6.37453704e-05, 3.08285662e-41, 0.5, 0}, {r = -6.37453704e-05, g = 3.08285662e-41, b = 0.5, a = 0}}}, outerColor = {{rgba = {0, 0.5, 1832, 83}, {r = 0, g = 0.5, b = 1832, a = 83}}}, image = 861245952}
#15 0x000055f0b96faa5c in rack::widget::Widget::drawChild(rack::widget::Widget*, rack::widget::Widget::DrawArgs const&, int)
    (this=this@entry=0x55f0bf203e90, child=child@entry=0x55f0bf2041f0, args=..., layer=layer@entry=0) at Rack/src/widget/Widget.cpp:311
        childArgs = {vg = 0x55f0bd9f9c20, clipBox = {pos = {x = 0, y = 0}, size = {x = 30, y = 380}}, fb = 0x0}
#16 0x000055f0b96fab8c in rack::widget::Widget::draw(rack::widget::Widget::DrawArgs const&) (this=this@entry=0x55f0bf203e90, args=...) at Rack/src/widget/Widget.cpp:280
        child = 0x55f0bf2041f0
        __for_range = std::__cxx11::list = {[0] = 0x55f0bf2041f0}
#17 0x000055f0b96faf3b in rack::widget::ZoomWidget::draw(rack::widget::Widget::DrawArgs const&) (this=0x55f0bf203e90, args=<optimized out>) at Rack/src/widget/ZoomWidget.cpp:54
        zoomCtx = {vg = 0x55f0bd9f9c20, clipBox = {pos = {x = 0, y = 0}, size = {x = 30, y = 380}}, fb = 0x0}
#18 0x000055f0b96faa5c in rack::widget::Widget::drawChild(rack::widget::Widget*, rack::widget::Widget::DrawArgs const&, int)
    (this=this@entry=0x55f0bf203be0, child=child@entry=0x55f0bf203e90, args=..., layer=layer@entry=0) at Rack/src/widget/Widget.cpp:311
        childArgs = {vg = 0x55f0bd9f9c20, clipBox = {pos = {x = 0, y = 0}, size = {x = 15, y = 190}}, fb = 0x0}
#19 0x000055f0b96fab8c in rack::widget::Widget::draw(rack::widget::Widget::DrawArgs const&) (this=0x55f0bf203be0, args=...) at Rack/src/widget/Widget.cpp:280
        child = 0x55f0bf203e90
        __for_range = std::__cxx11::list = {[0] = 0x55f0bf203e90}
#20 0x000055f0b96faa5c in rack::widget::Widget::drawChild(rack::widget::Widget*, rack::widget::Widget::DrawArgs const&, int)
    (this=this@entry=0x55f0bd109a00, child=child@entry=0x55f0bf203be0, args=..., layer=layer@entry=0) at Rack/src/widget/Widget.cpp:311
        childArgs = {vg = 0x55f0bd9f9c20, clipBox = {pos = {x = 0, y = 0}, size = {x = 15, y = 190}}, fb = 0x0}
#21 0x000055f0b96fab8c in rack::widget::Widget::draw(rack::widget::Widget::DrawArgs const&) (this=this@entry=0x55f0bd109a00, args=...) at Rack/src/widget/Widget.cpp:280
        child = 0x55f0bf203be0
        __for_range = std::__cxx11::list = {[0] = 0x55f0bf203be0}
#22 0x000055f0b9691ff7 in rack::app::browser::ModelBox::draw(rack::widget::Widget::DrawArgs const&) (this=0x55f0bd109a00, args=...) at Rack/src/app/Browser.cpp:217
        b = <optimized out>
        mi = <optimized out>
#23 0x000055f0b96faa5c in rack::widget::Widget::drawChild(rack::widget::Widget*, rack::widget::Widget::DrawArgs const&, int)
    (this=this@entry=0x55f0bd0f6c80, child=child@entry=0x55f0bd109a00, args=..., layer=layer@entry=0) at Rack/src/widget/Widget.cpp:311
        childArgs = {vg = 0x55f0bd9f9c20, clipBox = {pos = {x = 0, y = 0}, size = {x = 15, y = 190}}, fb = 0x0}
#24 0x000055f0b96fab8c in rack::widget::Widget::draw(rack::widget::Widget::DrawArgs const&) (this=0x55f0bd0f6c80, args=...) at Rack/src/widget/Widget.cpp:280
        child = 0x55f0bd109a00
        __for_range = 
          std::__cxx11::list = {[0] = 0x55f0bd0fc440, [1] = 0x55f0bd0fc530, [2] = 0x55f0bd0fc620, [3] = 0x55f0bd0fc710, [4] = 0x55f0bd0fc800, [5] = 0x55f0bd0fc8f0, [6] = 0x55f0bd0fc9e0, [7] = 0x55f0bd0fcad0, [8] = 0x55f0bd0fcbc0, [9] = 0x55f0bd103100, [10] = 0x55f0bd136f60, [11] = 0x55f0bd103880, [12] = 0x55f0bd126700, [13] = 0x55f0bd0fbae0, [14] = 0x55f0bd100b80, [15] = 0x55f0bd12af30, [16] = 0x55f0bd12b020, [17] = 0x55f0bd12df00, [18] = 0x55f0bd109370, [19] = 0x55f0bd109460, [20] = 0x55f0bd109550, [21] = 0x55f0bd109640, [22] = 0x55f0bd109730, [23] = 0x55f0bd109820, [24] = 0x55f0bd109910, [25] = 0x55f0bd109a00, [26] = 0x55f0bd1--Type <RET> for more, q to quit, c to continue without paging--
09af0, [27] = 0x55f0bd122b20, [28] = 0x55f0bd122bf0, [29] = 0x55f0bd122ce0, [30] = 0x55f0bd122dd0, [31] = 0x55f0bd122ec0, [32] = 0x55f0bd122fb0, [33] = 0x55f0bd1230a0, [34] = 0x55f0bd123190, [35] = 0x55f0bd123280, [36] = 0x55f0bd123370, [37] = 0x55f0bd123460, [38] = 0x55f0bd123550, [39] = 0x55f0bd123640, [40] = 0x55f0bd123730, [41] = 0x55f0bd123820, [42] = 0x55f0bd123910, [43] = 0x55f0bd123a00, [44] = 0x55f0bd134170, [45] = 0x55f0bd101f30, [46] = 0x55f0bd102980, [47] = 0x55f0bd1032e0, [48] = 0x55f0bd1034c0, [49] = 0x55f0bd1035b0, [50] = 0x55f0bd127150, [51] = 0x55f0bd127240, [52] = 0x55f0bd0f8570, [53] = 0x55f0bd0fe330, [54] = 0x55f0bd0fe420, [55] = 0x55f0bd104a50, [56] = 0x55f0bd126070, [57] = 0x55f0bd126160, [58] = 0x55f0bd126250, [59] = 0x55f0bd126340, [60] = 0x55f0bd126430, [61] = 0x55f0bd126520, [62] = 0x55f0bd126610, [63] = 0x55f0bd1267f0, [64] = 0x55f0bd1268e0, [65] = 0x55f0bd1269d0, [66] = 0x55f0bd126ac0, [67] = 0x55f0bd126bb0, [68] = 0x55f0bd136420, [69] = 0x55f0bd124180, [70] = 0x55f0bd0f9650, [71] = 0x55f0bd101b70, [72] = 0x55f0bd1036a0, [73] = 0x55f0bd105a40, [74] = 0x55f0bd12c4c0, [75] = 0x55f0bd12c5b0, [76] = 0x55f0bd126e80, [77] = 0x55f0bd136c90, [78] = 0x55f0bd1033d0, [79] = 0x55f0bd108830, [80] = 0x55f0bd108ce0, [81] = 0x55f0bd12ae40, [82] = 0x55f0bd12c6a0, [83] = 0x55f0bd134bc0, [84] = 0x55f0bd1017b0, [85] = 0x55f0bd0ff230, [86] = 0x55f0bd0ff320, [87] = 0x55f0bd0ff410, [88] = 0x55f0bd0ff500, [89] = 0x55f0bd0ff5f0, [90] = 0x55f0bd0ff6e0, [91] = 0x55f0bd0ff7d0, [92] = 0x55f0bd0ff8c0, [93] = 0x55f0bd0ff9b0, [94] = 0x55f0bd0ffaa0, [95] = 0x55f0bd0ffb90, [96] = 0x55f0bd0ffc80, [97] = 0x55f0bd0ffd70, [98] = 0x55f0bd0ffe60, [99] = 0x55f0bd0fff50, [100] = 0x55f0bd100040, [101] = 0x55f0bd100130, [102] = 0x55f0bd103790, [103] = 0x55f0bd107c00, [104] = 0x55f0bd135ca0, [105] = 0x55f0bd126ca0, [106] = 0x55f0bd126d90, [107] = 0x55f0bd126f70, [108] = 0x55f0bd127060, [109] = 0x55f0bd127330, [110] = 0x55f0bd127420, [111] = 0x55f0bd127510, [112] = 0x55f0bd127600, [113] = 0x55f0bd1276f0, [114] = 0x55f0bd1277e0, [115] = 0x55f0bd1278d0, [116] = 0x55f0bd1279c0, [117] = 0x55f0bd127ab0, [118] = 0x55f0bd127ba0, [119] = 0x55f0bd127c90, [120] = 0x55f0bd127d80, [121] = 0x55f0bd127e70, [122] = 0x55f0bd127f60, [123] = 0x55f0bd128050, [124] = 0x55f0bd128140, [125] = 0x55f0bd128230, [126] = 0x55f0bd128320, [127] = 0x55f0bd128410, [128] = 0x55f0bd128500, [129] = 0x55f0bd1285f0, [130] = 0x55f0bd132370, [131] = 0x55f0bd0fadc0, [132] = 0x55f0bd12fd00, [133] = 0x55f0bd0fe060, [134] = 0x55f0bd130570, [135] = 0x55f0bd123dc0, [136] = 0x55f0bd104000, [137] = 0x55f0bd108290, [138] = 0x55f0bd0f8a20, [139] = 0x55f0bd1041e0, [140] = 0x55f0bd108380, [141] = 0x55f0bd12f1c0, [142] = 0x55f0bd12f2b0, [143] = 0x55f0bd12f3a0, [144] = 0x55f0bd12f490, [145] = 0x55f0bd12f580, [146] = 0x55f0bd12f670, [147] = 0x55f0bd12f760, [148] = 0x55f0bd12f850, [149] = 0x55f0bd12f940, [150] = 0x55f0bd12fa30, [151] = 0x55f0bd12fb20, [152] = 0x55f0bd12fc10, [153] = 0x55f0bd12a210, [154] = 0x55f0bd136510, [155] = 0x55f0bd12e4a0, [156] = 0x55f0bd123be0, [157] = 0x55f0bd0fccb0, [158] = 0x55f0bd0fcda0, [159] = 0x55f0bd0f7df0, [160] = 0x55f0bd130c00, [161] = 0x55f0bd130de0, [162] = 0x55f0bd133ea0, [163] = 0x55f0bd0f81b0, [164] = 0x55f0bd0f8ed0, [165] = 0x55f0bd0f91a0, [166] = 0x55f0bd0fa0a0, [167] = 0x55f0bd0fa190, [168] = 0x55f0bd0fa280, [169] = 0x55f0bd0fa460, [170] = 0x55f0bd0fa550, [171] = 0x55f0bd0fa640, [172] = 0x55f0bd0fa730, [173] = 0x55f0bd100310, [174] = 0x55f0bd1015d0, [175] = 0x55f0bd102a70, [176] = 0x55f0bd1052c0, [177] = 0x55f0bd1054a0, [178] = 0x55f0bd105d10, [179] = 0x55f0bd1062b0, [180] = 0x55f0bd106490, [181] = 0x55f0bd106580, [182] = 0x55f0bd107390, [183] = 0x55f0bd107570, [184] = 0x55f0bd107a20, [185] = 0x55f0bd108740, [186] = 0x55f0bd128aa0, [187] = 0x55f0bd1298b0, [188] = 0x55f0bd12a300, [189] = 0x55f0bd12c010, [190] = 0x55f0bd12c1f0, [191] = 0x55f0bd12c880, [192] = 0x55f0bd12cd30, [193] = 0x55f0bd130930, [194] = 0x55f0bd130ed0, [195] = 0x55f0bd130fc0, [196] = 0x55f0bd1310b0, [197] = 0x55f0bd1311a0, [198] = 0x55f0bd131290, [199] = 0x55f0bd131380...}
#25 0x000055f0b96faa5c in rack::widget::Widget::drawChild(rack::widget::Widget*, rack::widget::Widget::DrawArgs const&, int)
    (this=this@entry=0x55f0bd0f6c10, child=child@entry=0x55f0bd0f6c80, args=..., layer=layer@entry=0) at Rack/src/widget/Widget.cpp:311
        childArgs = {vg = 0x55f0bd9f9c20, clipBox = {pos = {x = 0, y = 0}, size = {x = 1830, y = 864}}, fb = 0x0}
#26 0x000055f0b96fab8c in rack::widget::Widget::draw(rack::widget::Widget::DrawArgs const&) (this=0x55f0bd0f6c10, args=...) at Rack/src/widget/Widget.cpp:280
        child = 0x55f0bd0f6c80
        __for_range = std::__cxx11::list = {[0] = 0x55f0bd0f6c80}
#27 0x000055f0b96faa5c in rack::widget::Widget::drawChild(rack::widget::Widget*, rack::widget::Widget::DrawArgs const&, int)
    (this=this@entry=0x55f0bd0f6a80, child=child@entry=0x55f0bd0f6c10, args=..., layer=layer@entry=0) at Rack/src/widget/Widget.cpp:311
        childArgs = {vg = 0x55f0bd9f9c20, clipBox = {pos = {x = 0, y = 0}, size = {x = 1840, y = 864}}, fb = 0x0}
#28 0x000055f0b96fab8c in rack::widget::Widget::draw(rack::widget::Widget::DrawArgs const&) (this=0x55f0bd0f6a80, args=...) at Rack/src/widget/Widget.cpp:280
        child = 0x55f0bd0f6c10
        __for_range = std::__cxx11::list = {[0] = 0x55f0bd0f6c10}
#29 0x000055f0b96faa5c in rack::widget::Widget::drawChild(rack::widget::Widget*, rack::widget::Widget::DrawArgs const&, int)
    (this=this@entry=0x55f0bd0f69d0, child=child@entry=0x55f0bd0f6a80, args=..., layer=layer@entry=0) at Rack/src/widget/Widget.cpp:311
        childArgs = {vg = 0x55f0bd9f9c20, clipBox = {pos = {x = 0, y = 0}, size = {x = 1840, y = 864}}, fb = 0x0}
#30 0x000055f0b96fab8c in rack::widget::Widget::draw(rack::widget::Widget::DrawArgs const&) (this=this@entry=0x55f0bd0f69d0, args=...) at Rack/src/widget/Widget.cpp:280
        child = 0x55f0bd0f6a80
        __for_range = std::__cxx11::list = {[0] = 0x55f0bd0f6a80, [1] = 0x55f0bd0f6af0, [2] = 0x55f0bd0f6b70}
#31 0x000055f0b96f1e79 in rack::ui::ScrollWidget::draw(rack::widget::Widget::DrawArgs const&) (this=0x55f0bd0f69d0, args=...) at Rack/src/ui/ScrollWidget.cpp:68
#32 0x000055f0b96faa5c in rack::widget::Widget::drawChild(rack::widget::Widget*, rack::widget::Widget::DrawArgs const&, int)
    (this=this@entry=0x55f0bd0f61d0, child=child@entry=0x55f0bd0f69d0, args=..., layer=layer@entry=0) at Rack/src/widget/Widget.cpp:311
        childArgs = {vg = 0x55f0bd9f9c20, clipBox = {pos = {x = 0, y = 0}, size = {x = 1840, y = 864}}, fb = 0x0}
#33 0x000055f0b96fab8c in rack::widget::Widget::draw(rack::widget::Widget::DrawArgs const&) (this=0x55f0bd0f61d0, args=...) at Rack/src/widget/Widget.cpp:280
        child = 0x55f0bd0f69d0
        __for_range = std::__cxx11::list = {[0] = 0x55f0bd0f4dc0, [1] = 0x55f0bd0f69d0}
#34 0x000055f0b96faa5c in rack::widget::Widget::drawChild(rack::widget::Widget*, rack::widget::Widget::DrawArgs const&, int)
    (this=this@entry=0x55f0bd0f6170, child=child@entry=0x55f0bd0f61d0, args=..., layer=layer@entry=0) at Rack/src/widget/Widget.cpp:311
        childArgs = {vg = 0x55f0bd9f9c20, clipBox = {pos = {x = 0, y = 0}, size = {x = 1840, y = 905}}, fb = 0x0}
#35 0x000055f0b96fab8c in rack::widget::Widget::draw(rack::widget::Widget::DrawArgs const&) (this=0x55f0bd0f6170, args=...) at Rack/src/widget/Widget.cpp:280
        child = 0x55f0bd0f61d0
        __for_range = std::__cxx11::list = {[0] = 0x55f0bd0f61d0}
#36 0x000055f0b96faa5c in rack::widget::Widget::drawChild(rack::widget::Widget*, rack::widget::Widget::DrawArgs const&, int)
--Type <RET> for more, q to quit, c to continue without paging--
    (this=this@entry=0x55f0bd0f48d0, child=child@entry=0x55f0bd0f6170, args=..., layer=layer@entry=0) at Rack/src/widget/Widget.cpp:311
        childArgs = {vg = 0x55f0bd9f9c20, clipBox = {pos = {x = 0, y = 0}, size = {x = 1920, y = 985}}, fb = 0x0}
#37 0x000055f0b96fab8c in rack::widget::Widget::draw(rack::widget::Widget::DrawArgs const&) (this=0x55f0bd0f48d0, args=...) at Rack/src/widget/Widget.cpp:280
        child = 0x55f0bd0f6170
        __for_range = std::__cxx11::list = {[0] = 0x55f0bd9ffe90, [1] = 0x55f0bd0f4950, [2] = 0x55f0bd0f6170, [3] = 0x55f0bd141f70}
#38 0x000055f0b87fdd4d in rack::window::Window::step() (this=0x55f0bd141fc0) at Window.cpp:397
        args = {vg = 0x55f0bd9f9c20, clipBox = {pos = {x = 0, y = 0}, size = {x = 1920, y = 985}}, fb = 0x0}
        frameTime = <optimized out>
        lastFrameTime = <optimized out>
        windowTitle = "Cardinal Audio Plugin 2.0"
        newPixelRatio = <optimized out>
        winWidth = 1920
        winHeight = 985
        fbWidth = 1920
        fbHeight = 985
#39 0x000055f0b87fc357 in DISTRHO::CardinalUI::onNanoDisplay() (this=0x55f0bd9bed90) at CardinalUI.cpp:326
        sc = {context = 0x55f0bcc52960}
#40 DGL::NanoBaseWidget<DGL::TopLevelWidget>::onDisplay() (this=0x55f0bd9bed90) at ../../dpf/distrho/../dgl/NanoVG.hpp:961
#41 0x000055f0b882fea5 in DGL::TopLevelWidget::PrivateData::display() (this=0x55f0bda02110) at src/OpenGL.cpp:662
        size = {fWidth = 1920, fHeight = 985}
        width = 1920
        height = 985
        autoScaleFactor = <optimized out>
#42 0x000055f0b882b2e3 in DGL::Window::PrivateData::onPuglExpose() (this=0x55f0bd9beec0) at src/WindowPrivateData.cpp:597
        widget = 0x55f0bd9bed90
        it = 0x55f0bd9bed90
#43 0x000055f0b882bef3 in DGL::Window::PrivateData::puglEventCallback(DGL::PuglViewImpl*, DGL::PuglEvent const*) (view=0x55f0bd9bef80, event=0x7ffd2525c4d0) at src/WindowPrivateData.cpp:795
        pData = 0x55f0bd9beec0
#44 0x000055f0b887144a in DGL::flushExposures (world=0x55f0bd9265b0) at src/pugl-upstream/src/x11.c:1113
        view = 0x55f0bd9bef80
        configure = 
            {any = {type = DGL::PUGL_NOTHING, flags = 1}, type = DGL::PUGL_NOTHING, button = {type = DGL::PUGL_NOTHING, flags = 1, time = 0, x = 58, y = 1920, xRoot = 985, yRoot = 0, state = 0, button = 0}, configure = {type = DGL::PUGL_NOTHING, flags = 1, x = 0, y = 58, width = 1920, height = 985}, expose = {type = DGL::PUGL_NOTHING, flags = 1, x = 0, y = 58, width = 1920, height = 985}, key = {type = DGL::PUGL_NOTHING, flags = 1, time = 0, x = 58, y = 1920, xRoot = 985, yRoot = 0, state = 0, keycode = 0, key = 0}, text = {type = DGL::PUGL_NOTHING, flags = 1, time = 0, x = 58, y = 1920, xRoot = 985, yRoot = 0, state = 0, keycode = 0, character = 0, string = "\000\000\000\000\000\000\000"}, crossing = {type = DGL::PUGL_NOTHING, flags = 1, time = 0, x = 58, y = 1920, xRoot = 985, yRoot = 0, state = 0, mode = DGL::PUGL_CROSSING_NORMAL}, motion = {type = DGL::PUGL_NOTHING, flags = 1, time = 0, x = 58, y = 1920, xRoot = 985, yRoot = 0, state = 0}, scroll = {type = DGL::PUGL_NOTHING, flags = 1, time = 0, x = 58, y = 1920, xRoot = 985, yRoot = 0, state = 0, direction = DGL::PUGL_SCROLL_UP, dx = 0, dy = 0}, focus = {type = DGL::PUGL_NOTHING, flags = 1, mode = DGL::PUGL_CROSSING_NORMAL}, client = {type = DGL::PUGL_NOTHING, flags = 1, data1 = 0, data2 = 4633359591634108416}, timer = {type = DGL::PUGL_NOTHING, flags = 1, id = 0}}
        expose = 
            {any = {type = DGL::PUGL_EXPOSE, flags = 1}, type = DGL::PUGL_EXPOSE, button = {type = DGL::PUGL_EXPOSE, flags = 1, time = 0, x = 0, y = 1920, xRoot = 985, yRoot = 0, state = 0, button = 0}, configure = {type = DGL::PUGL_EXPOSE, flags = 1, x = 0, y = 0, width = 1920, height = 985}, expose = {type = DGL::PUGL_EXPOSE, flags = 1, x = 0, y = 0, width = 1920, height = 985}, key = {type = DGL::PUGL_EXPOSE, flags = 1, time = 0, x = 0, y = 1920, xRoot = 985, yRoot = 0, state = 0, keycode = 0, key = 0}, text = {type = DGL::PUGL_EXPOSE, flags = 1, time = 0, x = 0, y = 1920, xRoot = 985, yRoot = 0, state = 0, keycode = 0, character = 0, string = "\000\000\000\000\000\000\000"}, crossing = {type = DGL::PUGL_EXPOSE, flags = 1, time = 0, x = 0, y = 1920, xRoot = 985, yRoot = 0, state = 0, mode = DGL::PUGL_CROSSING_NORMAL}, motion = {type = DGL::PUGL_EXPOSE, flags = 1, time = 0, x = 0, y = 1920, xRoot = 985, yRoot = 0, state = 0}, scroll = {type = DGL::PUGL_EXPOSE, flags = 1, time = 0, x = 0, y = 1920, xRoot = 985, yRoot = 0, state = 0, direction = DGL::PUGL_SCROLL_UP, dx = 0, dy = 0}, focus = {type = DGL::PUGL_EXPOSE, flags = 1, mode = DGL::PUGL_CROSSING_NORMAL}, client = {type = DGL::PUGL_EXPOSE, flags = 1, data1 = 0, data2 = 0}, timer = {type = DGL::PUGL_EXPOSE, flags = 1, id = 0}}
        i = 0
        startTime = <optimized out>
        st = DGL::PUGL_SUCCESS
#45 DGL::puglUpdate(DGL::PuglWorld*, double) (world=0x55f0bd9265b0, timeout=<optimized out>) at src/pugl-upstream/src/x11.c:1262
        startTime = <optimized out>
        st = DGL::PUGL_SUCCESS
--Type <RET> for more, q to quit, c to continue without paging--
#46 0x000055f0b881d12c in DGL::Application::PrivateData::idle(unsigned int) (this=0x55f0bd90b9b0, timeoutInMs=timeoutInMs@entry=30) at src/ApplicationPrivateData.cpp:118
        timeoutInSeconds = <optimized out>
#47 0x000055f0b881ca48 in DGL::Application::exec(unsigned int) (this=0x55f0bd923d70, idleTimeInMs=30) at src/Application.cpp:41
#48 0x000055f0b8811421 in DISTRHO::UIExporter::exec(DGL::IdleCallback*) (cb=0x7ffd2525c740, this=0x7ffd2525c760) at ../../dpf/distrho/src/DistrhoUIInternal.hpp:224
        strBuf = "out18\000\000\000\000\000\000\024\000\000\000\000ph\232\372\003\177", '\000' <repeats 130 times>, "]\245\234\372\003\177\000\000\020\372\310\371\003\177\000\000\030\273\231\271\360U\000\000$ހ\270\360U\000\000\000\212\262\371\003\177\000\000\020\372\310\371\003\177\000\000\260"...
#49 DISTRHO::PluginJack::PluginJack(_jack_client*) (this=0x7ffd2525c740, client=<optimized out>) at ../../dpf/distrho/src/DistrhoPluginJACK.cpp:221
        strBuf = "out18\000\000\000\000\000\000\024\000\000\000\000ph\232\372\003\177", '\000' <repeats 130 times>, "]\245\234\372\003\177\000\000\020\372\310\371\003\177\000\000\030\273\231\271\360U\000\000$ހ\270\360U\000\000\000\212\262\371\003\177\000\000\020\372\310\371\003\177\000\000\260"...
#50 0x000055f0b8718da6 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at ../../dpf/distrho/src/DistrhoPluginJACK.cpp:952
        status = 0
        client = 0x55f0bcc01020
        p = 
              {<DGL::IdleCallback> = {_vptr.IdleCallback = 0x55f0bae9bc18 <vtable for DISTRHO::PluginJack+16>}, fPlugin = {fPlugin = 0x55f0bcc50750, fData = 0x55f0bcc50840, fIsActive = true, static sFallbackString = {fBuffer = 0x55f0bb0b40e8 <DISTRHO::String::_null()::sNull> "", fBufferLen = 0, fBufferAlloc = false}, static sFallbackAudioPort = {<DISTRHO::AudioPort> = {hints = 0, name = {fBuffer = 0x55f0bb0b40e8 <DISTRHO::String::_null()::sNull> "", fBufferLen = 0, fBufferAlloc = false}, symbol = {fBuffer = 0x55f0bb0b40e8 <DISTRHO::String::_null()::sNull> "", fBufferLen = 0, fBufferAlloc = false}, groupId = 4294967295}, busId = 0}, static sFallbackRanges = {def = 0, min = 0, max = 1}, static sFallbackEnumValues = {count = 0 '\000', restrictedMode = false, values = 0x0}, static sFallbackPortGroup = {<DISTRHO::PortGroup> = {name = {fBuffer = 0x55f0bb0b40e8 <DISTRHO::String::_null()::sNull> "", fBufferLen = 0, fBufferAlloc = false}, symbol = {fBuffer = 0x55f0bb0b40e8 <DISTRHO::String::_null()::sNull> "", fBufferLen = 0, fBufferAlloc = false}}, groupId = 4294967295}, leakDetector_PluginExporter = {<No data fields>}}, fUI = {ui = 0x55f0bd9bed90, uiData = 0x55f0bd923d70, leakDetector_UIExporter = {<No data fields>}}, fClient = 0x55f0bcc01020, fPortAudioIns = {0x7f03f0028ba0, 0x7f03f00292c8, 0x7f03f00299f0, 0x7f03f002a118, 0x7f03f002a840, 0x7f03f002af68, 0x55f0bdc4d260, 0x55f0bdc4d988, 0x55f0bdc4e0b0, 0x55f0bdc4e7d8, 0x55f0bdc4ef00, 0x55f0bdc4f628, 0x55f0bdc4fd50, 0x55f0bdc50478, 0x55f0bdc51900, 0x55f0bdc52028, 0x55f0bdc52750, 0x55f0bdc52e78}, fPortAudioOuts = {0x55f0bdc535a0, 0x55f0bdc53cc8, 0x55f0bdc543f0, 0x55f0bdc54b18, 0x55f0bdc57c60, 0x55f0bdc58388, 0x55f0bdc58ab0, 0x55f0bdc591d8, 0x55f0bdc59900, 0x55f0bdc5a028, 0x55f0bdc5a750, 0x55f0bdc5ae78, 0x55f0bdc5dbb0, 0x55f0bdc5e2d8, 0x55f0bdc5ea00, 0x55f0bdc5f128, 0x55f0bdc5f850, 0x55f0bdc5ff78}, fPortEventsIn = 0x55f0bdc606a0, fPortMidiOut = 0x55f0bdc60dc8, fPortMidiOutBuffer = 0x0, fTimePosition = {playing = false, frame = 0, bbt = {valid = false, bar = 0, beat = 0, tick = 0, barStartTick = 0, beatsPerBar = 0, beatType = 0, ticksPerBeat = 0, beatsPerMinute = 0}}, fLastOutputValues = 0x55f0bdbff700, fParametersChanged = 0x55f0bdc64090, fNotesRingBuffer = {<DISTRHO::RingBufferControl<DISTRHO::SmallStackBuffer>> = {_vptr.RingBufferControl = 0x55f0bae9bab8 <vtable for DISTRHO::SmallStackRingBuffer+16>, buffer = 0x7ffd2525c924, errorReading = false, errorWriting = false}, stackBuffer = {static size = 4096, head = 0, tail = 0, wrtn = 0, invalidateCommit = false, buf = '\000' <repeats 4095 times>}}}

[roberChen]

so this bug seems to be related to cf, here is the related code:
https://github.com/CardinalModules/cf/blob/51506f16bb65104b5efb5294ace5ee912a9abcc9/src/PLAY.cpp#L252-L254

[falkTX]

a backtrace, that is very useful, thanks.

I dont get this crash on my side though, on all systems I have tried.
so maybe a compiler or system specific bug.

is this on archlinux?

[roberChen]

is this on archlinux?

yes, and specifically, manjaro linux, but build with SYSDEPS=false on this version.

[roberChen]

and the change I've made to get the backtrace:

───────┬────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
       │ File: PKGBUILD
───────┼────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
   1   │ # Maintainer: redtide <redtid3@gmail.com>
   2   │ 
   3 + │ OPTIONS+=(debug !strip)
   4 + │ 
   5   │ _pkgname="cardinal"
   6   │ pkgname="${_pkgname}-git"
   7 ~ │ pkgver=r488.3e778c9
   8   │ pkgrel=1
   9   │ pkgdesc="DPF'ied build of VCVRack, allowing it to be used as an audio plugin."
  10   │ url="https://github.com/DISTRHO/Cardinal"
  11   │ arch=("x86_64")
  12   │ license=("GPL3")
  13   │ makedepends=("git")
  14   │ depends=("jansson" "libarchive" "libgl" "libsamplerate" "libx11" "speexdsp")
  15   │ provides=("${_pkgname}")
  16   │ conflicts=("${_pkgname}")
  17   │ source=("${_pkgname}"::"git+https://github.com/DISTRHO/Cardinal")
  18   │ sha512sums=("SKIP")
  19   │ pkgver() {
  20   │     cd "${srcdir}/${_pkgname}"
  21   │     printf "r%s.%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
  22   │ }
  23   │ prepare() {
  24   │     cd "${srcdir}/${_pkgname}"
  25   │     git submodule update --init --recursive
  26   │ }
  27   │ build() {
  28   │     cd "${srcdir}/${_pkgname}"
  29 ~ │     make PREFIX=/usr DEBUG=true
  30   │ }
  31   │ package() {
  32   │     cd "${srcdir}/${_pkgname}"
  33 ~ │     make PREFIX=/usr DESTDIR="${pkgdir}/" install
  34   │ }
───────┴────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────

and makefile of Rack:

diff --git a/plugin.mk b/plugin.mk
index 3258094f..fe66bfca 100644
--- a/plugin.mk
+++ b/plugin.mk
@@ -65,6 +65,8 @@ dist: all
        mkdir -p dist/$(SLUG)
        @# Strip and copy plugin binary
        cp $(TARGET) dist/$(SLUG)/
+
+ifeq($(DEBUG),true)
 ifdef ARCH_MAC
        $(STRIP) -S dist/$(SLUG)/$(TARGET)
        $(INSTALL_NAME_TOOL) -change libRack.dylib /tmp/Rack2/libRack.dylib dist/$(SLUG)/$(TARGET)
@@ -72,6 +74,7 @@ ifdef ARCH_MAC
 else
        $(STRIP) -s dist/$(SLUG)/$(TARGET)
 endif
+endif #debug
        @# Copy distributables
 ifdef ARCH_MAC
        rsync -rR $(DISTRIBUTABLES) dist/$(SLUG)/

[falkTX]

you dont need to modify rack's makefiles, those are never used.

if you know a little bit of coding you could try to fix this and post a patch.
something like this should do it perhaps:

std::string fD = module ? module->fileDesc : "load sample";
std::string to_display = fD;
to_display.resize(14);

[roberChen]

@falkTX I've made a pull request to fix this bug, could you merge it?

[falkTX]

do you confirm the fix then?
we will need to send it upstream, not just in CardinalModules. but I can cherry-pick the commit(s)

[roberChen]

Didn't see any crash with this fix. And I also found this bug at three different modules.