Bump to v0.99.3: handle getcwd return on Ubuntu glibc

Real fix for the ubuntu-latest CI failure that v0.99.1 / v0.99.2
diagnostic plumbing surfaced: Ubuntu's glibc declares getcwd with
warn_unused_result, so the existing line in main.c

    getcwd(initial_dir, sizeof(initial_dir));

trips -Werror=unused-result. Capture the result and clear
initial_dir on failure -- best-effort so the rest of the binary
still launches if the lookup fails.

Author: leifericf

CHANGELOG.md

@@ -1,5 +1,18 @@
 # Changelog
 
+## v0.99.3
+
+Handle `getcwd`'s return value in `main.c`. Ubuntu's glibc declares
+`getcwd` with `__attribute__((warn_unused_result))` and the
+bootstrap `CFLAGS` treat `unused-result` as an error, so the
+ignored-call line tipped over `-Werror=unused-result` on the
+ubuntu-latest runner. The macOS runner's libc declares the function
+without the attribute, so the same source compiled cleanly there
+and the regression went unnoticed locally on a gcc-14 + Debian
+glibc box where the attribute also doesn't fire. Fix is to capture
+the result and clear `initial_dir` on failure -- best-effort, so
+the rest of the binary still launches if the cwd lookup fails.
+
 ## v0.99.2
 
 CI follow-up to v0.99.1: also upload the captured build log as a

main.c

@@ -720,7 +720,14 @@ int main(int argc, char **argv)
             return exec_companion("mino-lsp", argv + first);
     }
 
-    getcwd(initial_dir, sizeof(initial_dir));
+    /* Best-effort: clear the buffer if getcwd fails so any subsequent
+     * use of initial_dir reads as the empty path rather than as
+     * uninitialised stack. Ubuntu glibc declares getcwd with the
+     * `warn_unused_result` attribute and the bootstrap CFLAGS treat
+     * unused-result as an error. */
+    if (getcwd(initial_dir, sizeof(initial_dir)) == NULL) {
+        initial_dir[0] = '\0';
+    }
 
     /* Compute binary_dir from argv[0] for finding bundled lib/. */
     {

src/mino.h

@@ -27,7 +27,7 @@
  */
 #define MINO_VERSION_MAJOR 0
 #define MINO_VERSION_MINOR 99
-#define MINO_VERSION_PATCH 2
+#define MINO_VERSION_PATCH 3
 
 /*
  * Human-readable version string of the *linked* runtime, e.g. "0.48.0".