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// This file is part of SymCC.
//
// SymCC is free software: you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the Free Software
// Foundation, either version 3 of the License, or (at your option) any later
// version.
//
// SymCC is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along with
// SymCC. If not, see <https://www.gnu.org/licenses/>.
// RUN: %symcc -O2 %s -o %t
// RUN: echo -ne "\x00\x00\x00\x05" | %t 2>&1 | %filecheck %s
//
// Check the symbolic handling of "read"
#include <stdint.h>
#include <stdio.h>
#include <arpa/inet.h>
#include <unistd.h>
int main(int argc, char* argv[]) {
int x;
if (read(STDIN_FILENO, &x, sizeof(x)) != sizeof(x)) {
fprintf(stderr, "Failed to read x\n");
return -1;
}
x = ntohl(x);
int foo = 0;
switch (x) {
case 3:
foo = 0;
fprintf(stderr, "x is 3\n");
break;
case 4:
foo = 1;
// Deliberately not printing anything here, which will generate a direct
// jump to the block after the switch statement.
break;
case 5:
foo = 2;
fprintf(stderr, "x is 5\n");
break;
default:
foo = 3;
fprintf(stderr, "x is something else\n");
break;
}
// SIMPLE: Trying to solve
// SIMPLE: Found diverging input
// QSYM-COUNT-2: SMT
// QSYM: New testcase
// ANY: x is 5
fprintf(stderr, "%d\n", foo);
// ANY: 2
// When the value to branch on is concrete there should be no solver
// interaction.
volatile int y = 17;
switch (y) {
case 3:
fprintf(stderr, "y is 3\n");
break;
case 4:
fprintf(stderr, "y is 4\n");
break;
case 5:
fprintf(stderr, "y is 5\n");
break;
default:
fprintf(stderr, "y is something else\n");
break;
}
// SIMPLE-NOT: Trying to solve
// QSYM-NOT: SMT
// ANY: y is something else
return 0;
}