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| author | Harald Anlauf <anlauf@gmx.de> | 2021-05-17 21:35:38 +0200 |
|---|---|---|
| committer | Harald Anlauf <anlauf@gmx.de> | 2021-05-17 21:35:38 +0200 |
| commit | 09867aa0ef7568012650395189b735f9a34cf9b5 (patch) | |
| tree | bd15fc740d3c48d17d7cdbaa7d497222858879c0 /gcc | |
| parent | 346cbaf57828aef190de93271c0eb3f10c9aca61 (diff) | |
| download | gcc-09867aa0ef7568012650395189b735f9a34cf9b5.zip gcc-09867aa0ef7568012650395189b735f9a34cf9b5.tar.gz gcc-09867aa0ef7568012650395189b735f9a34cf9b5.tar.bz2 | |
PR fortran/98411 - Pointless warning for static variables
Variables with explicit SAVE attribute cannot end up on the stack.
There is no point in checking whether they should be moved off the
stack to static storage.
gcc/fortran/ChangeLog:
PR fortran/98411
* trans-decl.c (gfc_finish_var_decl): Add check for explicit SAVE
attribute.
gcc/testsuite/ChangeLog:
PR fortran/98411
* gfortran.dg/pr98411.f90: New test.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/fortran/trans-decl.c | 1 | ||||
| -rw-r--r-- | gcc/testsuite/gfortran.dg/pr98411.f90 | 16 |
2 files changed, 17 insertions, 0 deletions
diff --git a/gcc/fortran/trans-decl.c b/gcc/fortran/trans-decl.c index a170188..406b4ae 100644 --- a/gcc/fortran/trans-decl.c +++ b/gcc/fortran/trans-decl.c @@ -738,6 +738,7 @@ gfc_finish_var_decl (tree decl, gfc_symbol * sym) /* Keep variables larger than max-stack-var-size off stack. */ if (!(sym->ns->proc_name && sym->ns->proc_name->attr.recursive) && !sym->attr.automatic + && sym->attr.save != SAVE_EXPLICIT && INTEGER_CST_P (DECL_SIZE_UNIT (decl)) && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)) /* Put variable length auto array pointers always into stack. */ diff --git a/gcc/testsuite/gfortran.dg/pr98411.f90 b/gcc/testsuite/gfortran.dg/pr98411.f90 new file mode 100644 index 0000000..249afae --- /dev/null +++ b/gcc/testsuite/gfortran.dg/pr98411.f90 @@ -0,0 +1,16 @@ +! { dg-do compile } +! { dg-options "-Wall -fautomatic -fmax-stack-var-size=100" } +! PR fortran/98411 - Pointless warning for static variables + +module try + implicit none + integer, save :: a(1000) +contains + subroutine initmodule + real, save :: b(1000) + logical :: c(1000) ! { dg-warning "moved from stack to static storage" } + a(1) = 42 + b(2) = 3.14 + c(3) = .true. + end subroutine initmodule +end module try |