stdint-tests: long long preproc on recent Sun C

* tests/test-stdint.c: Test long long preprocessor constants on
Oracle Developer Studio 12.6, where they should work.

5 files changed, 17 insertions, 7 deletions

diff --git a/ChangeLog b/ChangeLog
index f1e5cc7d66..d64252c386 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2021-09-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	stdint-tests: long long preproc on recent Sun C
+	* tests/test-stdint.c: Test long long preprocessor constants on
+	Oracle Developer Studio 12.6, where they should work.
+
 2021-09-13  Bruno Haible  <bruno@clisp.org>
 
 	extern-inline: Fix syntax error on macOS with GCC 11 (regr. 2021-08-22).
diff --git a/doc/posix-headers/stdint.texi b/doc/posix-headers/stdint.texi
index 784799b0f2..7f33b20d23 100644
--- a/doc/posix-headers/stdint.texi
+++ b/doc/posix-headers/stdint.texi
@@ -58,8 +58,10 @@ so public header files should avoid these types.
 Macros are used instead of typedefs.
 @item
 Some C preprocessors mishandle constants that do not fit in @code{long int}.
-For example, as of 2007, Sun C mishandles @code{#if LLONG_MIN < 0} on
-a platform with 32-bit @code{long int} and 64-bit @code{long long int}.
+For example, as of 2007, Sun C mishandled @code{#if LLONG_MIN < 0} on
+a platform with 32-bit @code{long int} and 64-bit @code{long long int};
+this bug was fixed on or before Oracle Developer Studio 12.6
+(Sun C 5.15 SunOS_sparc 2017/05/30).
 Some older preprocessors mishandle constants ending in @code{LL}.
 To work around these problems, compute the value of expressions like
 @code{LONG_MAX < LLONG_MAX} at @code{configure}-time rather than at
diff --git a/m4/extern-inline.m4 b/m4/extern-inline.m4
index 94443f2125..a4ac5ea532 100644
--- a/m4/extern-inline.m4
+++ b/m4/extern-inline.m4
@@ -17,7 +17,8 @@ AC_DEFUN([gl_EXTERN_INLINE],
    mishandles inline functions that call each other.  E.g., for 'inline void f
    (void) { } inline void g (void) { f (); }', c99 incorrectly complains
    'reference to static identifier "f" in extern inline function'.
-   This bug was observed with Sun C 5.12 SunOS_i386 2011/11/16.
+   This bug was observed with Oracle Developer Studio 12.6
+   (Sun C 5.15 SunOS_sparc 2017/05/30).
 
    Suppress extern inline (with or without __attribute__ ((__gnu_inline__)))
    on configurations that mistakenly use 'static inline' to implement
diff --git a/tests/test-func.c b/tests/test-func.c
index d680759668..0d00b97efa 100644
--- a/tests/test-func.c
+++ b/tests/test-func.c
@@ -27,8 +27,8 @@ main ()
 {
   ASSERT (strlen (__func__) > 0);
 
-  /* On SunPRO C 5.9, sizeof __func__ evaluates to 0.  The compiler warns:
-     "warning: null dimension: sizeof()".  */
+  /* On Oracle Developer Studio 12.6 and earlier, sizeof __func__ yields 0.
+     The compiler warns: "warning: null dimension: sizeof()".  */
 #if !defined __SUNPRO_C
   ASSERT (strlen (__func__) + 1 == sizeof __func__);
 #endif
diff --git a/tests/test-stdint.c b/tests/test-stdint.c
index dc6fad7aa6..737ff56c89 100644
--- a/tests/test-stdint.c
+++ b/tests/test-stdint.c
@@ -247,9 +247,10 @@ uintmax_t j[2] = { UINTMAX_C (17), UINTMAX_MAX };
 verify (TYPE_MAXIMUM (uintmax_t) == UINTMAX_MAX);
 verify_same_types (UINTMAX_MAX, (uintmax_t) 0 + 0);
 
-/* As of 2007, Sun C and HP-UX 10.20 cc don't support 'long long' constants in
+/* Older Sun C and HP-UX 10.20 cc don't support 'long long' constants in
    the preprocessor.  */
-#if !(defined __SUNPRO_C || (defined __hpux && !defined __GNUC__))
+#if !((defined __SUNPRO_C && __SUNPRO_C < 0x5150) \
+      || (defined __hpux && !defined __GNUC__))
 #if INTMAX_MIN && INTMAX_MAX && UINTMAX_MAX
 /* ok */
 #else