--- src/htsselftest.c	2026-08-09 04:13:49.000000000 +0800
+++ src/htsselftest.c	2026-08-11 16:14:38.000000000 +0800
@@ -530,10 +530,6 @@
   /* strcpybuff into a pointer destination: routes through the unchecked
      strcpybuff_ptr_ fallback (the path the overflow warning flags). The warning
      is intentional here; we only verify the fallback still copies correctly. */
-#if defined(__GNUC__)
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wattribute-warning"
-#endif
   {
     char storage[8];
     char *const p = storage;
@@ -542,9 +538,6 @@
     if (strcmp(p, "ptr") != 0)
       return 1;
   }
-#if defined(__GNUC__)
-#pragma GCC diagnostic pop
-#endif
 
   /* htsbuff: bounded builder over a fixed array (append, truncating append,
      reset, and length tracking) */

--- src/coucal/murmurhash3.h	2026-08-09 04:13:49.000000000 +0800
+++ src/coucal/murmurhash3.h	2026-08-11 16:23:47.000000000 +0800
@@ -99,10 +99,6 @@
 
   /* deliberate fall-through; widen each byte to uint32_t so a high byte shifted
      left 24 can't overflow signed int (UBSan) */
-#if defined(__GNUC__) || defined(__clang__)
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
-#endif
   switch(len & 15)
   {
   case 15: k4 ^= (uint32_t)tail[14] << 16;
@@ -128,9 +124,6 @@
   case  1: k1 ^= (uint32_t)tail[ 0] << 0;
            k1 *= c1; k1  = ROTL32(k1,15); k1 *= c2; h1 ^= k1;
   };
-#if defined(__GNUC__) || defined(__clang__)
-#pragma GCC diagnostic pop
-#endif
 
   h1 ^= (uint32_t) len;
   h2 ^= (uint32_t) len;