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-rw-r--r--src/core/support/subprocess_posix.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/core/support/subprocess_posix.c b/src/core/support/subprocess_posix.c
index 327c476b16..b4631fa0ed 100644
--- a/src/core/support/subprocess_posix.c
+++ b/src/core/support/subprocess_posix.c
@@ -55,7 +55,7 @@ struct gpr_subprocess {
int joined;
};
-char *gpr_subprocess_binary_extension() { return ""; }
+const char *gpr_subprocess_binary_extension() { return ""; }
gpr_subprocess *gpr_subprocess_create(int argc, const char **argv) {
gpr_subprocess *r;