bart-cuda FTBFS with LTO enabled

Excerpt from the build log:

gcc -Wdate-time -D_FORTIFY_SOURCE=2 -MMD -MF src/.svd.d -iquote /<<PKGBUILDDIR>>/src/ -DUSE_CUDA -I/usr//include -I/usr//include/ -I/usr//include -DFFTWTHREADS -DMAIN_LIST="avg, bench, bin, bitmask, cabs, caldir, calmat, carg, casorati, cc, ccapply, cdf97, circshift, conj, conv, conway, copy, cpyphs, creal, crop, delta, ecalib, ecaltwo, estdelay, estdims, estshift, estvar, extract, fakeksp, fft, fftmod, fftrot, fftshift, filter, flatten, flip, fmac, homodyne, index, invert, itsense, join, looklocker, lrmatrix, mandelbrot, mip, moba, mobafit, nlinv, noise, normalize, nrmse, nufft, ones, pattern, phantom, pics, pocsense, poisson, pol2mask, poly, repmat, reshape, resize, rmfreq, rof, roistat, rss, rtnlinv, sake, saxpy, scale, sdot, show, signal, slice, spow, sqpics, squeeze, ssa, std, svd, tgv, threshold, toimg, traj, transpose, twixread, upat, var, vec, version, walsh, wave, wavelet, wavepsf, whiten, window, wshfl, zeros, zexp, ()" -include src/main.h -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects -fstack-protector-strong -Wformat -Werror=format-security -std=gnu11 -fopenmp -c -o src/svd.o src/svd.c
during IPA pass: modref
src/svd.c:70:1: internal compiler error: tree code ‘c_maybe_const_expr’ is not supported in LTO streams
   70 | }
      | ^
0xd74b2b internal_error(char const*, ...)
 ???:0
0x1042e50 DFS::DFS(output_block*, tree_node*, bool, bool, bool)
 ???:0
0x1041f3f lto_output_tree(output_block*, tree_node*, bool, bool)
 ???:0
0x1388a04 produce_asm_for_decls()
 ???:0
0x132cf0e symbol_table::compile()
 ???:0
0x132b218 symbol_table::finalize_compilation_unit()
 ???:0
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-11/README.Bugs> for instructions.
The bug is not reproducible, so it is likely a hardware or OS problem.