stb_sprintf: fix unaligned access

Fix an unaligned 32-bit access even if STB_SPRINTF_NOUNALIGNED was defined.
ago%!(EXTRA string=7 years) · 05b45da629
parent e6afb9cbae
commit 05b45da629
1 changed files with 11 additions and 1 deletions
--- a/stb_sprintf.h
+++ b/stb_sprintf.h
@ -332,7 +332,17 @@ STBSP__PUBLICDEF int STB_SPRINTF_DECORATE(vsprintfcb)(STBSP_SPRINTFCB *callback,
            if (callback)
               if ((STB_SPRINTF_MIN - (int)(bf - buf)) < 4)
                  goto schk1;
-            *(stbsp__uint32 *)bf = v;
+            #ifdef STB_SPRINTF_NOUNALIGNED
+                if(((stbsp__uintptr)bf) & 3) {
+                    bf[0] = f[0];
+                    bf[1] = f[1];
+                    bf[2] = f[2];
+                    bf[3] = f[3];
+                } else
+            #endif
+            {
+                *(stbsp__uint32 *)bf = v;
+            }
            bf += 4;
            f += 4;
         }