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      1 # $NetBSD: t_gcov.sh,v 1.1 2025/01/18 22:31:22 rillig Exp $
      2 #
      3 # Copyright (c) 2025 The NetBSD Foundation, Inc.
      4 # All rights reserved.
      5 #
      6 # Redistribution and use in source and binary forms, with or without
      7 # modification, are permitted provided that the following conditions
      8 # are met:
      9 # 1. Redistributions of source code must retain the above copyright
     10 #    notice, this list of conditions and the following disclaimer.
     11 # 2. Redistributions in binary form must reproduce the above copyright
     12 #    notice, this list of conditions and the following disclaimer in the
     13 #    documentation and/or other materials provided with the distribution.
     14 #
     15 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     16 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     17 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     18 # PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     19 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     20 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     21 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     22 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     23 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     24 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     25 # POSSIBILITY OF SUCH DAMAGE.
     26 #
     27 
     28 after_exec_head()
     29 {
     30 }
     31 after_exec_body()
     32 {
     33 	atf_require_prog cat
     34 	atf_require_prog gcc
     35 	atf_require_prog gcov
     36 	atf_require_prog grep
     37 
     38 	cat <<EOF >prog.c
     39 #include <unistd.h>
     40 
     41 int
     42 main(void)
     43 {
     44 	pid_t pid = vfork();
     45 	switch (pid) {
     46 	case 0:
     47 		execl("/bin/sh", "sh", "-c", ":", (const char *)0);
     48 		/* FALLTHROUGH */
     49 	case -1:
     50 		write(2, "error\n", 6);
     51 		_exit(1);
     52 	}
     53 
     54 	write(1, "reached\n", 8);
     55 	return 0;
     56 }
     57 EOF
     58 
     59 	cat <<EOF >prog.c.gcov.expected
     60         -:    0:Source:prog.c
     61         -:    0:Graph:prog.gcno
     62         -:    0:Data:prog.gcda
     63         -:    0:Runs:1
     64         -:    1:#include <unistd.h>
     65         -:    2:
     66         -:    3:int
     67         1:    4:main(void)
     68         -:    5:{
     69         1:    6:	pid_t pid = vfork();
     70         1:    7:	switch (pid) {
     71         1:    8:	case 0:
     72         1:    9:		execl("/bin/sh", "sh", "-c", ":", (const char *)0);
     73         -:   10:		/* FALLTHROUGH */
     74     #####:   11:	case -1:
     75     #####:   12:		write(2, "error\n", 6);
     76     #####:   13:		_exit(1);
     77         -:   14:	}
     78         -:   15:
     79     #####:   16:	write(1, "reached\n", 8);
     80     #####:   17:	return 0;
     81         -:   18:}
     82 EOF
     83 
     84 	atf_check \
     85 	    gcc --coverage -c prog.c
     86 	atf_check \
     87 	    gcc --coverage -o prog prog.o
     88 	atf_check -o inline:'reached\n' \
     89 	    ./prog
     90 	atf_check -o ignore \
     91 	    gcov prog.c
     92 
     93 	atf_check -o file:prog.c.gcov.expected \
     94 	    cat prog.c.gcov
     95 
     96 	# FIXME: The code was reached once but is reported as unreached.
     97 	atf_check -o ignore \
     98 	    grep "#####.*reached" prog.c.gcov
     99 }
    100 
    101 atf_init_test_cases()
    102 {
    103 	atf_add_test_case after_exec
    104 }
    105