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| author | Mikael Pettersson <mikpe@it.uu.se> | 2011-06-06 13:43:31 +0200 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2011-06-06 11:43:31 +0000 |
| commit | 275311c494a330790748a27d28fa494bd4a18933 (patch) | |
| tree | 4cf2bc8dd32967087e36ff5664d882cd396e5b51 /gcc | |
| parent | 38fbfaf6fb23fdcd130cc524839686b9ad28f752 (diff) | |
| download | gcc-275311c494a330790748a27d28fa494bd4a18933.zip gcc-275311c494a330790748a27d28fa494bd4a18933.tar.gz gcc-275311c494a330790748a27d28fa494bd4a18933.tar.bz2 | |
re PR tree-optimization/49243 (attribute((returns_twice)) doesn't work)
2011-06-06 Mikael Pettersson <mikpe@it.uu.se>
PR tree-optimization/49243
* calls.c (setjmp_call_p): Also check if fndecl has the
returns_twice attribute.
* gcc.dg/pr49243.c: New.
From-SVN: r174695
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/calls.c | 2 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr49243.c | 25 |
4 files changed, 38 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3897ba4..3f01f25 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2011-06-06 Mikael Pettersson <mikpe@it.uu.se> + + PR tree-optimization/49243 + * calls.c (setjmp_call_p): Also check if fndecl has the + returns_twice attribute. + 2011-06-06 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> * config/mips/iris6.h (ENDFILE_SPEC): Use crtfastmath.o if diff --git a/gcc/calls.c b/gcc/calls.c index f5592c5..feb98d2 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -567,6 +567,8 @@ special_function_p (const_tree fndecl, int flags) int setjmp_call_p (const_tree fndecl) { + if (DECL_IS_RETURNS_TWICE (fndecl)) + return ECF_RETURNS_TWICE; return special_function_p (fndecl, 0) & ECF_RETURNS_TWICE; } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 1e904e6..1c0a71a 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2011-06-06 Mikael Pettersson <mikpe@it.uu.se> + + PR tree-optimization/49243 + * gcc.dg/pr49243.c: New. + 2011-06-06 Eric Botcazou <ebotcazou@adacore.com> * gnat.dg/specs/cond_expr1.ads: New test. diff --git a/gcc/testsuite/gcc.dg/pr49243.c b/gcc/testsuite/gcc.dg/pr49243.c new file mode 100644 index 0000000..f896b05 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr49243.c @@ -0,0 +1,25 @@ +/* PR tree-optimization/49243 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -Winline" } */ + +extern unsigned long jb[]; +extern int my_setjmp(unsigned long jb[]) __attribute__((returns_twice)); +extern int decode(const char*); + +static inline int wrapper(const char **s_ptr) /* { dg-warning "(inlining failed|function 'wrapper' can never be inlined because it uses setjmp)" } */ +{ + if (my_setjmp(jb) == 0) { + const char *s = *s_ptr; + while (decode(s) != 0) + *s_ptr = ++s; + return 0; + } else + return -1; +} + +void parse(const char *data) +{ + const char *s = data; + if (!(wrapper(&s) == -1 && (s - data) == 1)) /* { dg-warning "called from here" } */ + __builtin_abort(); +} |