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fixed bug where piping into sneakers caused crash, and added missing free

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This commit is contained in:
Patrick Nappa 2019-02-13 11:06:42 +11:00
parent 50dc9cc055
commit 90b7d0410b
1 changed files with 6 additions and 1 deletions
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7
src/sneakers.c
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@ -32,7 +32,11 @@ int main(void) {
// Get terminal dimentions (needed for centering)
struct winsize w;
ioctl(0, TIOCGWINSZ, &w);
// if not an interactive tty, w is not populated, resulting in UB
if (ioctl(0, TIOCGWINSZ, &w) == -1) {
perror("Input not from an interactive terminal");
return 1;
}
termCols = w.ws_col;
// Allocate space for our display string
@ -45,6 +49,7 @@ int main(void) {
// Allocate space for our display string
if ((display_uc = malloc(20 * termCols)) == NULL)
{
free(display);
fprintf(stderr, "Memory Allocation Error. Quitting!\n");
return 1;
}