Issue 24413 - ImportC: undefined identifier `__builtin_unreachable`
Summary: ImportC: undefined identifier `__builtin_unreachable`
Status: NEW
Alias: None
Product: D
Classification: Unclassified
Component: dmd (show other issues)
Version: D2
Hardware: All All
: P1 enhancement
Assignee: No Owner
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2024-02-26 08:18 UTC by Richard (Rikki) Andrew Cattermole
Modified: 2024-11-01 05:09 UTC (History)
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Description Richard (Rikki) Andrew Cattermole 2024-02-26 08:18:39 UTC 
Reported from NewsGroup: https://forum.dlang.org/post/shkrympbixzjjnjxxtvn@forum.dlang.org

No other information in post other than the identifier is missing ``__builtin_unreachable``.
Comment 1 Elias Batek (0xEAB) 2024-11-01 05:09:03 UTC 
Found something to reproduce it.

While trying to compile <https://github.com/mity/md4c/blob/481fbfbdf72daab2912380d62bb5f2187d438408/src/md4c.c>, I ended up with this wall of errors:

md4c.c(1084,43): Error: undefined identifier `__builtin_unreachable`
md4c.c(1235,43): Error: undefined identifier `__builtin_unreachable`
md4c.c(1308,43): Error: undefined identifier `__builtin_unreachable`
md4c.c(1383,34): Error: undefined identifier `__builtin_unreachable`
md4c.c(2293,72): Error: undefined identifier `__builtin_unreachable`
md4c.c(2294,45): Error: undefined identifier `__builtin_unreachable`
md4c.c(2357,43): Error: undefined identifier `__builtin_unreachable`
md4c.c(2564,23): Error: undefined identifier `__builtin_unreachable`
md4c.c(2574,23): Error: undefined identifier `__builtin_unreachable`
md4c.c(2594,23): Error: undefined identifier `__builtin_unreachable`
md4c.c(2663,33): Error: undefined identifier `__builtin_unreachable`
md4c.c(2666,56): Error: undefined identifier `__builtin_unreachable`
md4c.c(2675,33): Error: undefined identifier `__builtin_unreachable`
md4c.c(2903,43): Error: undefined identifier `__builtin_unreachable`
md4c.c(2931,43): Error: undefined identifier `__builtin_unreachable`
md4c.c(2942,43): Error: undefined identifier `__builtin_unreachable`
md4c.c(3613,62): Error: undefined identifier `__builtin_unreachable`
md4c.c(3617,62): Error: undefined identifier `__builtin_unreachable`
md4c.c(3692,40): Error: undefined identifier `__builtin_unreachable`
md4c.c(3725,43): Error: undefined identifier `__builtin_unreachable`

(Importing the header only appears to be working fine.)