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-rw-r--r--src/stdio/popen.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/stdio/popen.c b/src/stdio/popen.c
index 5a47509e..ca3cdf9d 100644
--- a/src/stdio/popen.c
+++ b/src/stdio/popen.c
@@ -42,7 +42,7 @@ FILE *popen(const char *cmd, const char *mode)
if (pid) {
__release_ptc();
__syscall(SYS_close, p[1-op]);
- sigprocmask(SIG_BLOCK, SIGALL_SET, &old);
+ sigprocmask(SIG_SETMASK, &old, 0);
if (pid < 0) {
fclose(f);
return 0;