Defined in 3 files as a prototype:

• contrib/gcc/system.h, line 101 (as a prototype)
• contrib/gcclibs/libcpp/system.h, line 93 (as a prototype)
• include/stdio.h, line 344 (as a prototype)

Defined in 2 files as a macro:

• contrib/diff/lib/unlocked-io.h, line 53 (as a macro)
• include/stdio.h, line 542 (as a macro)

Defined in 1 files as a function:

• lib/libc/stdio/feof.c, line 59 (as a function)

Referenced in 4 files:

• contrib/diff/lib/unlocked-io.h, line 51
• contrib/gcc/system.h, line 99
• contrib/gcclibs/libcpp/system.h, line 91
• lib/libc/stdio/feof.c, line 45