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false not recognized with c23 standard #12782

@oflebbe

Description

@oflebbe

Type: Bug

Use this code

#include <stdbool.h>

int main() {
  bool v = false;
}

When using c standard c17 everything is fine. With c23 the word "false" is marked as undefined, which is not correct, since <stdbool.h> is included.

Extension version: 1.21.6
VS Code version: Code 1.93.1 (38c31bc77e0dd6ae88a4e9cc93428cc27a56ba40, 2024-09-11T17:20:05.685Z)
OS version: Linux x64 6.10.11-amd64
Modes:

System Info
Item Value
CPUs AMD Ryzen 7 7840U w/ Radeon 780M Graphics (16 x 2394)
GPU Status 2d_canvas: enabled
canvas_oop_rasterization: enabled_on
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_graphite: disabled_off
video_decode: enabled
video_encode: disabled_software
vulkan: disabled_off
webgl: enabled
webgl2: enabled
webgpu: disabled_off
webnn: disabled_off
Load (avg) 2, 1, 1
Memory (System) 30.67GB (21.60GB free)
Process Argv --crash-reporter-id 8ddf7950-f651-430b-b3d7-3a91a1218a5c
Screen Reader no
VM 0%
DESKTOP_SESSION plasmawayland
XDG_CURRENT_DESKTOP KDE
XDG_SESSION_DESKTOP KDE
XDG_SESSION_TYPE wayland
A/B Experiments
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pythonnoceb:30805159
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dsvsc016:30899300
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cppperfnew:31000557
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pythonait:31006305
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dwnewjupytercf:31046870
impr_priority:31102340
nativerepl1:31139838
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flighttreat:31134774
wkspc-onlycs-t:31132770
wkspc-ranged-t:31125599
cf971741:31144450
autoexpandse:31146404
iacca1:31144502
cc771715:31146322

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