https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101773
--- Comment #6 from Vincent Lefèvre <vincent-gcc at vinc17 dot net> --- Created attachment 51259 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51259&action=edit added missing error check on fclose in gcc/gcov-io.c Well, not all errors are detected. There is a missing test in gcc/gcov-io.c for fclose (which does a write system call to flush the buffers): --- a/gcc/gcov-io.c +++ b/gcc/gcov-io.c @@ -199,7 +199,8 @@ gcov_close (void) { if (gcov_var.file) { - fclose (gcov_var.file); + if (fclose (gcov_var.file)) + gcov_var.error = 1; gcov_var.file = 0; } gcov_var.mode = 0; (also in attachment). I've tested this patch, and it solves my problem: openat(AT_FDCWD, "dir/#home#vlefevre#a-tst.gcda", O_RDWR|O_CREAT, 0666) = 3 fcntl(3, F_SETLKW, {l_type=F_WRLCK, l_whence=SEEK_SET, l_start=0, l_len=0}) = 0 fcntl(3, F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE) fstat(3, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0 read(3, "", 1024) = 0 lseek(3, 0, SEEK_SET) = 0 write(3, "adcg 02B\233\10\222\21\0\0\0\241\10\0\0\0\1\0\0\0\1\0\0\0\0\0\0\1"..., 84) = -1 ENOSPC (No space left on device) close(3) = 0 write(2, "libgcov profiling error:dir/#hom"..., 68libgcov profiling error:dir/#home#vlefevre#a-tst.gcda:Error writing ) = 68 write(2, "profiling:exiting after an error"..., 33profiling:exiting after an error ) = 33 exit_group(1) = ? +++ exited with 1 +++
