https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110796
--- Comment #7 from Thiago Jung Bauermann <thiago.bauermann at linaro dot org> --- (In reply to Francois-Xavier Coudert from comment #5) > OK, so it signals FE_INVALID on the first test. Can you run this with the > same options, and see what happens? It ran normally: thiago.bauermann@tcwg-jade-03-dev:~/tmp$ cat test-1.c #include <fenv.h> #include <stdio.h> void ftrue (float x, float y) { if (!__builtin_iseqsig (x, y)) __builtin_abort (); } int main () { volatile float f1, f2; f1 = 0.f; f2 = 0.f; if (fetestexcept (FE_INVALID)) printf("Invalid 1\n"); ftrue (f1, f2); if (fetestexcept (FE_INVALID)) printf("Invalid 2\n"); return 0; } thiago.bauermann@tcwg-jade-03-dev:~/tmp$ /home/thiago.bauermann/.cache/builds/gcc-native-aarch32/gcc/xgcc -B/home/thiago.bauermann/.cache/builds/gcc-native-aarch32/gcc/ test-1.c -fdiagnostics-plain-output -Os -fsignaling-nans -ggdb3 -lm -o ./test-1 thiago.bauermann@tcwg-jade-03-dev:~/tmp$ ./test-1 thiago.bauermann@tcwg-jade-03-dev:~/tmp$ echo $? 0 thiago.bauermann@tcwg-jade-03-dev:~/tmp$ > One surprising thing is that the directive "dg-add-options ieee" in the test > did not apparently add any other option for IEEE conformance⦠Ah, that's an interesting thread to pull. I'll investigate if there's any option we should be adding.