"inlinable function call" build error with llvm

[Brian Craft]

After updating to latest sdk to get the new backend, I'm getting compile failures like this:

inlinable function call in a function with debug info must have a !dbg location

  tail call void @free(i8* %32)

inlinable function call in a function with debug info must have a !dbg location

  tail call void @free(i8* %50)

inlinable function call in a function with debug info must have a !dbg location

  tail call void @free(i8* %20)

while compiling the check unit test library (file check_run.c).

Anyone know what causes this?

Relevant lines from the build log:

/bin/bash ../libtool  --tag=CC   --mode=compile /home/ubuntu/emsdk/upstream/emscripten/emcc -DHAVE_CONFIG_H -I. -I../../../check-0.13.0/src -I..     -g -O2 -Wextra -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wno-variadic-macros -Wimport -Wfatal-errors -Wformat=2 -Winit-self -Wmissing-include-dirs -Wswitch-default -Wunknown-pragmas -MT check_run.lo -MD -MP -MF .deps/check_run.Tpo -c -o check_run.lo ../../../check-0.13.0/src/check_run.c

libtool: compile:  /home/ubuntu/emsdk/upstream/emscripten/emcc -DHAVE_CONFIG_H -I. -I../../../check-0.13.0/src -I.. -g -O2 -Wextra -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wno-variadic-macros -Wimport -Wfatal-errors -Wformat=2 -Winit-self -Wmissing-include-dirs -Wswitch-default -Wunknown-pragmas -MT check_run.lo -MD -MP -MF .deps/check_run.Tpo -c ../../../check-0.13.0/src/check_run.c  -o .libs/check_run.o

inlinable function call in a function with debug info must have a !dbg location

  tail call void @free(i8* %32)

[Brian Craft]

looks like maybe it's a bug in the llvm version that's in the latest sdk.

[Sam Clegg]

Is that code open source?  It does look like it's probably a compiler bug.   

Does it result in failed compilation or is it just a warning?

Would you mind opening an issue in the emscripten tracker with reproduction steps?

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[Brian Craft]

yeah, it's open source, a standard test runner for C. apt install check, on debian systems.

https://github.com/libcheck/check

The compile fails. I'll try to compose simplified steps for reproduction.