[SCM] gawk branch, feature/pma, updated. gawk-4.1.0-4736-g9d385f9b

[Arnold Robbins]

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The branch, feature/pma has been updated
       via  9d385f9b9813fcc54105f5b4ae99fd1e6086b139 (commit)
      from  75b69fd522e743cc2ecee53a09cffc71b8166cb8 (commit)

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- Log -----------------------------------------------------------------
http://git.sv.gnu.org/cgit/gawk.git/commit/?id=9d385f9b9813fcc54105f5b4ae99fd1e6086b139

commit 9d385f9b9813fcc54105f5b4ae99fd1e6086b139
Author: Arnold D. Robbins <arnold@skeeve.com>
Date:   Fri May 27 17:45:17 2022 -0400

    Fix in pma.c.

diff --git a/support/ChangeLog b/support/ChangeLog
index 03780887..be52a7f4 100644
--- a/support/ChangeLog
+++ b/support/ChangeLog
@@ -1,3 +1,8 @@
+2022-05-27         Arnold D. Robbins     <arnold@skeeve.com>
+
+       * pma.c: Updated from Terrence Kelley to compile on
+       older compilers.
+
 2022-05-26         Arnold D. Robbins     <arnold@skeeve.com>
 
        * pma.h, pma.c, agpl-3.0.txt: New files.
diff --git a/support/pma.c b/support/pma.c
index 0b8224e9..d769bb0e 100644
--- a/support/pma.c
+++ b/support/pma.c
@@ -76,7 +76,13 @@ typedef struct ao {  // alloc object
 // bit 1:  is the previous ao on the state.anext list in use?
 // bit 2:  has this ao ever grown via realloc?
 
-static const uintptr_t lomask = 0x7, himask = ~lomask;  // requires recent 
compiler
+// Some older compilers gratuitously reject the himask definition on
+// the first line below despite it being perfectly legal C99.  The
+// workaround on the second line below appears correct by inspection
+// but it has not yet been subjected to the same extensive tests as
+// the original.
+// static const uintptr_t lomask = 0x7, himask = ~lomask;  // requires recent 
compiler
+static const uintptr_t lomask = 0x7, himask = ~ ( (uintptr_t) 0x7 );  // not 
extensively tested as of Fri 27 May 2022
 
 // extract bits from header
 #define HIBH(ao_t_ptr) ((ao_t *)((uintptr_t)(ao_t_ptr) & himask))

-----------------------------------------------------------------------

Summary of changes:
 support/ChangeLog | 5 +++++
 support/pma.c     | 8 +++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)


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